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#81
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
"John Fields" wrote in message ... If you ever get to it, instead of just mouthing opinion I'd be interested in learning how the voltage across the gap changed, and especially interested in learning how you managed to measure the current in the unconnected wire. -- JF With a clamp on ampmeter which is unaffected by the momentum of the magnetic field and has it's positive battery terminal connected to earth ground? ;~) Art |
#82
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sat, 03 Dec 2011 19:04:27 -0600, John Fields
wrote: On Sat, 03 Dec 2011 09:30:29 -0800, John Larkin wrote: On Sat, 03 Dec 2011 08:34:54 -0700, Jim Thompson wrote: On Sat, 03 Dec 2011 07:28:05 -0800, Fred Abse wrote: On Sun, 27 Nov 2011 12:06:24 -0700, Jim Thompson wrote: Well! Alternators _are_ current sources, but not for the reason Larkin claims... no surprise ;-) Are you referring to current limiting due to opposing flux cancellation? No. An alternator is a transformer, just that the primary is rotating. What do transformers transform? What is the mechanism? ...Jim Thompson It's a transformer with a lot of leakage inductance. John --- By your own admission it's still a transformer. Since it doesn't have a primary winding, it's technically not a transformer. Its output looks like that of a transformer with a lot of leakage inductance. JT 1 JL 0 What? JT said that a moving magnetic field doesn't induce voltage into a wire. Then he retracted the statement. He also said that an alternator is a current source, which is pure nonsense. How does that give him a point? You have not said anything intelligent about alternators or electromagnetics, except the silly "concentration and dilution" thing. John |
#83
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Fri, 2 Dec 2011 20:13:10 -0000, "Ian Field"
wrote: "John Larkin" wrote in message .. . On Fri, 2 Dec 2011 14:59:35 -0000, "Ian Field" wrote: I've KFd the 2 trolls (JF & JT) - I can't stop them attacking whenever I post a question, but at least I don't have to read it. Don't worry about missing useful comments they have made about alternators, because there are none. John JF hurls insults while claiming to have answered my question, JT just hurls insults - he might have once been one of the great pillars of the electronics industry, but now he's just a bad tempered and bitter old fart. I've absolutely no fear of missing anything worth reading from those two. --- A wink is as good as a nod to a dead horse. -- JF |
#84
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sat, 03 Dec 2011 17:55:47 -0800, John Larkin
wrote: On Sat, 03 Dec 2011 19:04:27 -0600, John Fields wrote: On Sat, 03 Dec 2011 09:30:29 -0800, John Larkin wrote: On Sat, 03 Dec 2011 08:34:54 -0700, Jim Thompson wrote: On Sat, 03 Dec 2011 07:28:05 -0800, Fred Abse wrote: On Sun, 27 Nov 2011 12:06:24 -0700, Jim Thompson wrote: Well! Alternators _are_ current sources, but not for the reason Larkin claims... no surprise ;-) Are you referring to current limiting due to opposing flux cancellation? No. An alternator is a transformer, just that the primary is rotating. What do transformers transform? What is the mechanism? ...Jim Thompson It's a transformer with a lot of leakage inductance. John --- By your own admission it's still a transformer. Since it doesn't have a primary winding, it's technically not a transformer. --- So you've changed your mind? --- Its output looks like that of a transformer with a lot of leakage inductance. JT 1 JL 0 What? JT said that a moving magnetic field doesn't induce voltage into a wire. Then he retracted the statement. He also said that an alternator is a current source, which is pure nonsense. How does that give him a point? --- The point was for stating that an alternator was a transformer, with which you agreed. --- You have not said anything intelligent about alternators or electromagnetics, except the silly "concentration and dilution" thing. --- Then, the exception makes it intelligent. Thanks, John! BTW, I don't see anything quantitative coming out of your camp, so you're hardly in a position to be casting aspersions. -- JF |
#85
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sat, 03 Dec 2011 17:48:32 -0800, John Larkin
wrote: On Sat, 03 Dec 2011 18:56:59 -0600, John Fields wrote: On Sat, 03 Dec 2011 09:28:17 -0800, John Larkin wrote: On Sat, 03 Dec 2011 08:23:23 -0700, Jim Thompson wrote: On Sat, 03 Dec 2011 04:24:47 -0600, John Fields wrote: On Fri, 02 Dec 2011 11:45:49 -0800, John Larkin wrote: On Fri, 02 Dec 2011 07:51:45 -0700, Jim Thompson wrote: On Fri, 02 Dec 2011 09:11:00 -0500, JW wrote: On Fri, 02 Dec 2011 06:23:36 -0600 John Fields wrote in Message id: m: BTW, if you swing a magnet past a wire, what's induced in the wire? Is the wire connected to anything? Bwahahahahaha! Larkin would opine that there's a voltage end-to-end. ;-) ...Jim Thompson It's an alternator. A voltage is induced, and the wire/coil has some impedance. --- If one were to connect a voltmeter across the otherwise open ends of a conductor, and that conductor was excited by a varying magnetic field, the voltmeter would indeed register a varying voltage. The only way to connect the voltmeter is to use leads. Then you have a loop. If you keep the leads very close to the wire, as you reduce the loop area, the voltage goes to zero. After I posted I realized I'd put my foot in it because, in a way, that's how semiconductors work... particularly MOS. Mosfets are magnetic devices? The underlying cause, however, would be the concentration and dilution of charge at the ends of the wire. Indeed. That concentration and dilution would be caused by the movement of electrons in the wire, that movement being defined as current. Yep. ...Jim Thompson OK: make a 1 meter radius wire ring with a small gap. Push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second. What's the voltage across the gap? More importantly, what's the current in the wire? JF? JT? --- JL. Since it's _you_ who's been taken to task, it behooves you to defend yourself. You're very big at telling people what to do, but tiny at doing your own legwork so, instead of pretending to authority, if you've got a point to make and you want to make it physically, why not just shut the **** up, do the work, and report back with findings which incontrovertibly quash your detractors? That is, since you proposed the experiment, why don't _you_ make a 1 meter radius wire ring with a small gap, push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second, and report back with what happened? It's impressive how much you and JT don't say about electronics, and the amazingly wide range of subjects in which you have no interest. --- From what I've seen so far, JT and I prefer to communicate ideas and solutions for problems through schematic diagrams and math, rather than through the use of dodgy, guarded verbiage, which seems to be your preferred method for avoiding anything which might trip you up later. --- If you ever get to it, instead of just mouthing opinion I'd be interested in learning how the voltage across the gap changed, and especially interested in learning how you managed to measure the current in the unconnected wire. You, not I, said that there would be current in such a wire. Can you explain how much? "Concentration and dilution" doesn't cut it. --- Sure it does, in a qualitative sense, and that's all that this discussion is about, so far. If you want to take it deeper by getting off of your lazy ass and doing some experimental work to prove your hypothesis then, by all means, do it. --- JT said there would be no voltage, but now seems to have changed his mind. --- An honest man admits his errors, so why do you fault him for that? I think we all know the answer to that one. --- Either you two never studied electromagnetics, or forgot what you were taught. But that doesn't stop you from blustering and pretending that you understand the basics. --- Blather. -- JF |
#86
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 04 Dec 2011 04:08:30 -0600, John Fields
wrote: On Fri, 2 Dec 2011 20:13:10 -0000, "Ian Field" wrote: "John Larkin" wrote in message . .. On Fri, 2 Dec 2011 14:59:35 -0000, "Ian Field" wrote: I've KFd the 2 trolls (JF & JT) - I can't stop them attacking whenever I post a question, but at least I don't have to read it. Don't worry about missing useful comments they have made about alternators, because there are none. John JF hurls insults while claiming to have answered my question, JT just hurls insults I _did_ answer your question... like a good teacher I posed it in such a way to make you think. But you didn't. You're incapable. - he might have once been one of the great pillars of the electronics industry, but now he's just a bad tempered and bitter old fart. Yep, Never mind still averaging a new patent every three years, and two very complex analog/mixed-signal chip designs every year. What do you have to show for your existence? Or are you still on the dole? I've absolutely no fear of missing anything worth reading from those two. I presume that means you'll shut up and go away? Good! --- A wink is as good as a nod to a dead horse. ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#87
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
"John Larkin" wrote in message ... On Sat, 03 Dec 2011 18:56:59 -0600, John Fields wrote: On Sat, 03 Dec 2011 09:28:17 -0800, John Larkin wrote: On Sat, 03 Dec 2011 08:23:23 -0700, Jim Thompson wrote: On Sat, 03 Dec 2011 04:24:47 -0600, John Fields wrote: On Fri, 02 Dec 2011 11:45:49 -0800, John Larkin wrote: On Fri, 02 Dec 2011 07:51:45 -0700, Jim Thompson wrote: On Fri, 02 Dec 2011 09:11:00 -0500, JW wrote: On Fri, 02 Dec 2011 06:23:36 -0600 John Fields wrote in Message id: m: BTW, if you swing a magnet past a wire, what's induced in the wire? Is the wire connected to anything? Bwahahahahaha! Larkin would opine that there's a voltage end-to-end. ;-) ...Jim Thompson It's an alternator. A voltage is induced, and the wire/coil has some impedance. --- If one were to connect a voltmeter across the otherwise open ends of a conductor, and that conductor was excited by a varying magnetic field, the voltmeter would indeed register a varying voltage. The only way to connect the voltmeter is to use leads. Then you have a loop. If you keep the leads very close to the wire, as you reduce the loop area, the voltage goes to zero. After I posted I realized I'd put my foot in it because, in a way, that's how semiconductors work... particularly MOS. Mosfets are magnetic devices? The underlying cause, however, would be the concentration and dilution of charge at the ends of the wire. Indeed. That concentration and dilution would be caused by the movement of electrons in the wire, that movement being defined as current. Yep. ...Jim Thompson OK: make a 1 meter radius wire ring with a small gap. Push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second. What's the voltage across the gap? More importantly, what's the current in the wire? JF? JT? --- JL. Since it's _you_ who's been taken to task, it behooves you to defend yourself. You're very big at telling people what to do, but tiny at doing your own legwork so, instead of pretending to authority, if you've got a point to make and you want to make it physically, why not just shut the **** up, do the work, and report back with findings which incontrovertibly quash your detractors? That is, since you proposed the experiment, why don't _you_ make a 1 meter radius wire ring with a small gap, push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second, and report back with what happened? It's impressive how much you and JT don't say about electronics, and the amazingly wide range of subjects in which you have no interest. If you ever get to it, instead of just mouthing opinion I'd be interested in learning how the voltage across the gap changed, and especially interested in learning how you managed to measure the current in the unconnected wire. You, not I, said that there would be current in such a wire. Can you explain how much? "Concentration and dilution" doesn't cut it. JT said there would be no voltage, but now seems to have changed his mind. Either you two never studied electromagnetics, or forgot what you were taught. But that doesn't stop you from blustering and pretending that you understand the basics. The 2 trolls are not above a bit of mischief. |
#88
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 04 Dec 2011 05:26:54 -0600, John Fields
wrote: On Sat, 03 Dec 2011 17:48:32 -0800, John Larkin wrote: On Sat, 03 Dec 2011 18:56:59 -0600, John Fields wrote: On Sat, 03 Dec 2011 09:28:17 -0800, John Larkin wrote: On Sat, 03 Dec 2011 08:23:23 -0700, Jim Thompson wrote: On Sat, 03 Dec 2011 04:24:47 -0600, John Fields wrote: On Fri, 02 Dec 2011 11:45:49 -0800, John Larkin m wrote: On Fri, 02 Dec 2011 07:51:45 -0700, Jim Thompson wrote: On Fri, 02 Dec 2011 09:11:00 -0500, JW wrote: On Fri, 02 Dec 2011 06:23:36 -0600 John Fields wrote in Message id: om: BTW, if you swing a magnet past a wire, what's induced in the wire? Is the wire connected to anything? Bwahahahahaha! Larkin would opine that there's a voltage end-to-end. ;-) ...Jim Thompson It's an alternator. A voltage is induced, and the wire/coil has some impedance. --- If one were to connect a voltmeter across the otherwise open ends of a conductor, and that conductor was excited by a varying magnetic field, the voltmeter would indeed register a varying voltage. The only way to connect the voltmeter is to use leads. Then you have a loop. If you keep the leads very close to the wire, as you reduce the loop area, the voltage goes to zero. After I posted I realized I'd put my foot in it because, in a way, that's how semiconductors work... particularly MOS. Mosfets are magnetic devices? The underlying cause, however, would be the concentration and dilution of charge at the ends of the wire. Indeed. That concentration and dilution would be caused by the movement of electrons in the wire, that movement being defined as current. Yep. ...Jim Thompson OK: make a 1 meter radius wire ring with a small gap. Push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second. What's the voltage across the gap? More importantly, what's the current in the wire? JF? JT? --- JL. Since it's _you_ who's been taken to task, it behooves you to defend yourself. You're very big at telling people what to do, but tiny at doing your own legwork so, instead of pretending to authority, if you've got a point to make and you want to make it physically, why not just shut the **** up, do the work, and report back with findings which incontrovertibly quash your detractors? That is, since you proposed the experiment, why don't _you_ make a 1 meter radius wire ring with a small gap, push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second, and report back with what happened? It's impressive how much you and JT don't say about electronics, and the amazingly wide range of subjects in which you have no interest. --- From what I've seen so far, JT and I prefer to communicate ideas and solutions for problems through schematic diagrams and math, rather than through the use of dodgy, guarded verbiage, which seems to be your preferred method for avoiding anything which might trip you up later. --- If you ever get to it, instead of just mouthing opinion I'd be interested in learning how the voltage across the gap changed, and especially interested in learning how you managed to measure the current in the unconnected wire. You, not I, said that there would be current in such a wire. Can you explain how much? "Concentration and dilution" doesn't cut it. --- Sure it does, in a qualitative sense, and that's all that this discussion is about, so far. If you want to take it deeper by getting off of your lazy ass and doing some experimental work to prove your hypothesis then, by all means, do it. --- JT said there would be no voltage, but now seems to have changed his mind. --- An honest man admits his errors, so why do you fault him for that? Because he, like you, makes these mistakes because he's more interested in personal attacks and self-puffery than he is in discussing electronics. That attitude makes you both far to eager to "correct" (ie, insult me) even if you have to be factually wrong to do it, which you usually are. So, say something new about alternators. John |
#89
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson
wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? I'm in need of another laugh. On a more serious note, would some young buck (that excludes us venerable professor-level types :-) care to analyze the problem with Ian's proposition? Extra brownie points if you can make Larkin froth incoherent ;-) ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#90
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 4 Dec 2011 16:12:20 -0000, "Ian Field"
wrote: "John Larkin" wrote in message .. . On Sat, 03 Dec 2011 18:56:59 -0600, John Fields wrote: On Sat, 03 Dec 2011 09:28:17 -0800, John Larkin wrote: On Sat, 03 Dec 2011 08:23:23 -0700, Jim Thompson wrote: On Sat, 03 Dec 2011 04:24:47 -0600, John Fields wrote: On Fri, 02 Dec 2011 11:45:49 -0800, John Larkin m wrote: On Fri, 02 Dec 2011 07:51:45 -0700, Jim Thompson wrote: On Fri, 02 Dec 2011 09:11:00 -0500, JW wrote: On Fri, 02 Dec 2011 06:23:36 -0600 John Fields wrote in Message id: om: BTW, if you swing a magnet past a wire, what's induced in the wire? Is the wire connected to anything? Bwahahahahaha! Larkin would opine that there's a voltage end-to-end. ;-) ...Jim Thompson It's an alternator. A voltage is induced, and the wire/coil has some impedance. --- If one were to connect a voltmeter across the otherwise open ends of a conductor, and that conductor was excited by a varying magnetic field, the voltmeter would indeed register a varying voltage. The only way to connect the voltmeter is to use leads. Then you have a loop. If you keep the leads very close to the wire, as you reduce the loop area, the voltage goes to zero. After I posted I realized I'd put my foot in it because, in a way, that's how semiconductors work... particularly MOS. Mosfets are magnetic devices? The underlying cause, however, would be the concentration and dilution of charge at the ends of the wire. Indeed. That concentration and dilution would be caused by the movement of electrons in the wire, that movement being defined as current. Yep. ...Jim Thompson OK: make a 1 meter radius wire ring with a small gap. Push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second. What's the voltage across the gap? More importantly, what's the current in the wire? JF? JT? --- JL. Since it's _you_ who's been taken to task, it behooves you to defend yourself. You're very big at telling people what to do, but tiny at doing your own legwork so, instead of pretending to authority, if you've got a point to make and you want to make it physically, why not just shut the **** up, do the work, and report back with findings which incontrovertibly quash your detractors? That is, since you proposed the experiment, why don't _you_ make a 1 meter radius wire ring with a small gap, push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second, and report back with what happened? It's impressive how much you and JT don't say about electronics, and the amazingly wide range of subjects in which you have no interest. If you ever get to it, instead of just mouthing opinion I'd be interested in learning how the voltage across the gap changed, and especially interested in learning how you managed to measure the current in the unconnected wire. You, not I, said that there would be current in such a wire. Can you explain how much? "Concentration and dilution" doesn't cut it. JT said there would be no voltage, but now seems to have changed his mind. Either you two never studied electromagnetics, or forgot what you were taught. But that doesn't stop you from blustering and pretending that you understand the basics. The 2 trolls are not above a bit of mischief. But they are really, really not very good at it. Or at the electronics. JT went to MIT about 90 years ago, so he must have taken courses in physics and electromagnetics. I assume he's forgotten it all. JF probably never unstood any of this stuff can can't be bothered to look it up. Sad old farts... I'd feel sorry for them if they weren't so nasty. John |
#91
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson
wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Very likely so. It's a simple impedance matching issue. The alternator was designed to power an incandescent load at roughly constant current, so will probably generate more that its rated 3 watts into a higher impedance load, certainly into a conjugate load. A source that has a loaded output voltage of 6, and an open-circuit voltage in the hundreds, is not operating at its maximum-power-transfer point/ A transformer+rectifier would probably work, too. What Ian should do is chuck the alternator into a vise, spin it with a drill motor, and measure the voltage and impedance at various speeds. That would be interesting. Of course, extracting more power will require more mechanical input, ie pedaling harder. It would be interesting to measure torque, too. All that could be done in an hour or so, and would be fun. But don't let me disturb your clucking with electrical theory. I'm in need of another laugh. On a more serious note, would some young buck (that excludes us venerable professor-level types :-) Of course you exclude yourself. If you ever understood this stuff, you've clearly forgotten it. care to analyze the problem with Ian's proposition? Extra brownie points if you can make Larkin froth incoherent ;-) Say something substantive. The only things you have suggested in this thread so far have been off-topic or flat wrong. Silly old hen. John |
#92
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
"John Larkin" wrote in message ... On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. |
#93
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field"
wrote: "John Larkin" wrote in message .. . On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Version 4 SHEET 1 1400 680 WIRE 480 -160 352 -160 WIRE 688 -160 544 -160 WIRE 352 -80 352 -160 WIRE 464 -80 352 -80 WIRE 688 -80 688 -160 WIRE 688 -80 544 -80 WIRE 560 16 496 16 WIRE 688 16 688 -80 WIRE 688 16 640 16 WIRE 832 16 688 16 WIRE 992 16 880 16 WIRE 1072 16 992 16 WIRE 880 32 880 16 WIRE 1072 32 1072 16 WIRE 832 48 832 16 WIRE 496 64 496 16 WIRE 688 64 688 16 WIRE -448 80 -512 80 WIRE -416 80 -448 80 WIRE -304 80 -336 80 WIRE -192 80 -224 80 WIRE 16 80 -48 80 WIRE 80 80 16 80 WIRE 208 80 160 80 WIRE 240 80 208 80 WIRE 448 80 240 80 WIRE 832 96 800 96 WIRE -48 112 -48 80 WIRE -512 128 -512 80 WIRE -192 128 -192 80 WIRE -96 128 -192 128 WIRE 240 128 240 80 WIRE 352 128 352 -80 WIRE 448 128 352 128 WIRE -288 160 -288 128 WIRE -192 160 -192 128 WIRE 352 176 352 128 WIRE 688 176 688 128 WIRE 800 176 800 96 WIRE 880 176 880 112 WIRE 1072 176 1072 112 WIRE 496 192 496 144 WIRE -240 224 -240 128 WIRE -240 224 -304 224 WIRE 240 224 240 192 WIRE -512 256 -512 208 WIRE -304 256 -304 224 WIRE -192 256 -192 224 WIRE -96 256 -96 176 WIRE -48 256 -48 192 WIRE 240 352 240 304 WIRE 352 352 352 256 WIRE -304 368 -304 336 FLAG -512 256 0 FLAG -192 256 0 FLAG -96 256 0 FLAG -48 256 0 FLAG -288 160 0 FLAG -304 368 0 FLAG -448 80 SINE FLAG 240 352 0 FLAG 208 80 RC FLAG 496 192 0 FLAG 688 176 0 FLAG 880 176 0 FLAG 1072 176 0 FLAG 800 176 0 FLAG 352 352 0 FLAG 992 16 OUT FLAG 16 80 DAC SYMBOL voltage -512 112 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 WINDOW 0 72 33 Left 2 WINDOW 3 42 84 Left 2 SYMATTR InstName V1 SYMATTR Value SINE(0 1 5K) SYMBOL sw -320 80 R270 WINDOW 0 74 13 VRight 2 WINDOW 3 72 71 VRight 2 SYMATTR InstName S1 SYMATTR Value MYSW SYMBOL res -320 64 R90 WINDOW 0 -45 60 VBottom 2 WINDOW 3 -38 60 VTop 2 SYMATTR InstName R5 SYMATTR Value 10 SYMBOL cap -208 160 R0 SYMATTR InstName C4 SYMATTR Value 1n SYMBOL e -48 96 R0 WINDOW 0 38 83 Left 2 WINDOW 3 46 121 Left 2 SYMATTR InstName E2 SYMATTR Value 1 SYMBOL voltage -304 240 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 WINDOW 0 -81 57 Left 2 WINDOW 3 -191 166 Left 2 SYMATTR InstName V2 SYMATTR Value PULSE(-1 1 0 100n 100n 200n 4u 10000) SYMBOL res 176 64 R90 WINDOW 0 71 56 VBottom 2 WINDOW 3 77 58 VTop 2 SYMATTR InstName R7 SYMATTR Value 1 SYMBOL cap 224 128 R0 SYMATTR InstName C5 SYMATTR Value 1.59e-6 SYMBOL e 496 48 R0 WINDOW 0 47 80 Left 2 WINDOW 3 24 117 Left 2 SYMATTR InstName E4 SYMATTR Value 100000 SYMBOL res 656 0 R90 WINDOW 0 71 56 VBottom 2 WINDOW 3 74 58 VTop 2 SYMATTR InstName R10 SYMATTR Value 1 SYMBOL cap 672 64 R0 WINDOW 0 42 2 Left 2 SYMATTR InstName C8 SYMATTR Value 1.14e-2 SYMBOL e 880 16 R0 WINDOW 0 52 63 Left 2 WINDOW 3 49 102 Left 2 SYMATTR InstName E5 SYMATTR Value 0.2 SYMBOL res 1056 16 R0 WINDOW 0 60 44 Left 2 WINDOW 3 64 78 Left 2 SYMATTR InstName R11 SYMATTR Value 1K SYMBOL res 336 160 R0 WINDOW 0 54 42 Left 2 WINDOW 3 50 74 Left 2 SYMATTR InstName R8 SYMATTR Value 1K SYMBOL res 560 -96 R90 WINDOW 0 73 88 VBottom 2 WINDOW 3 47 23 VTop 2 SYMATTR InstName R9 SYMATTR Value 4K SYMBOL res 224 208 R0 WINDOW 0 -77 42 Left 2 WINDOW 3 -73 80 Left 2 SYMATTR InstName R12 SYMATTR Value 1µ SYMBOL cap 544 -176 R90 WINDOW 0 -18 77 VBottom 2 WINDOW 3 -44 3 VTop 2 SYMATTR InstName C1 SYMATTR Value 1p TEXT -480 -176 Left 2 !;ac oct 10 1K 1M TEXT -480 -224 Left 2 !.tran 0 .001 0 1u TEXT -536 -64 Left 2 !.model MYSW SW(Ron=1 Roff=1G Vt=.5 Vh=-.4) TEXT -208 320 Left 2 ;Sample/hold at 250 KHz TEXT -40 8 Left 2 ;1st Order Lowpass 100 KHz TEXT 424 336 Left 2 ;Opamp GBW = 1.4M G=100K Corner 14 Hz TEXT -96 -336 Left 2 ;V545 LVDT MODULE TEXT -160 -280 Left 2 ;DAC/OUTPUT STAGE SIMULATION TEXT 480 280 Left 2 ;Gain = 5 Install LT Spice. Copy the above text into a text editor and save as TEST.ASC. Double-click on TEST.ASC, or drag it onto the LT Spice shortcut. You should see the schematic. Click the "running man" icon to run a time-domain simulation. Then use the mouse/probe to select points to plot. You can drag little boxes with the mouse to zoom regions of the waveform, or park on the waveform and read time and voltage. Right-click on parts to edit their values. I used a VCVS and an RC here to simulate an opamp. Just Friday we were talking about how we tend to use "practical" part values in sims, as if 1 farad caps were hard to get, or 1 ohm resistors would get too hot, or 1 pF caps would suffer from parasitics, or megavolt node voltages would arc over or something. John |
#94
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
"John Larkin" wrote in message ... On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field" wrote: "John Larkin" wrote in message . .. On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Thanks - might download it tomorrow. |
#95
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin
wrote: On Sun, 04 Dec 2011 05:26:54 -0600, John Fields wrote: On Sat, 03 Dec 2011 17:48:32 -0800, John Larkin wrote: On Sat, 03 Dec 2011 18:56:59 -0600, John Fields wrote: On Sat, 03 Dec 2011 09:28:17 -0800, John Larkin wrote: On Sat, 03 Dec 2011 08:23:23 -0700, Jim Thompson wrote: On Sat, 03 Dec 2011 04:24:47 -0600, John Fields wrote: On Fri, 02 Dec 2011 11:45:49 -0800, John Larkin wrote: On Fri, 02 Dec 2011 07:51:45 -0700, Jim Thompson wrote: On Fri, 02 Dec 2011 09:11:00 -0500, JW wrote: On Fri, 02 Dec 2011 06:23:36 -0600 John Fields wrote in Message id: kafhd7lhrv6p13ogcl0lnpe9cljhjc0t7h@4ax. com: BTW, if you swing a magnet past a wire, what's induced in the wire? Is the wire connected to anything? Bwahahahahaha! Larkin would opine that there's a voltage end-to-end. ;-) ...Jim Thompson It's an alternator. A voltage is induced, and the wire/coil has some impedance. --- If one were to connect a voltmeter across the otherwise open ends of a conductor, and that conductor was excited by a varying magnetic field, the voltmeter would indeed register a varying voltage. The only way to connect the voltmeter is to use leads. Then you have a loop. If you keep the leads very close to the wire, as you reduce the loop area, the voltage goes to zero. After I posted I realized I'd put my foot in it because, in a way, that's how semiconductors work... particularly MOS. Mosfets are magnetic devices? The underlying cause, however, would be the concentration and dilution of charge at the ends of the wire. Indeed. That concentration and dilution would be caused by the movement of electrons in the wire, that movement being defined as current. Yep. ...Jim Thompson OK: make a 1 meter radius wire ring with a small gap. Push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second. What's the voltage across the gap? More importantly, what's the current in the wire? JF? JT? --- JL. Since it's _you_ who's been taken to task, it behooves you to defend yourself. You're very big at telling people what to do, but tiny at doing your own legwork so, instead of pretending to authority, if you've got a point to make and you want to make it physically, why not just shut the **** up, do the work, and report back with findings which incontrovertibly quash your detractors? That is, since you proposed the experiment, why don't _you_ make a 1 meter radius wire ring with a small gap, push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second, and report back with what happened? It's impressive how much you and JT don't say about electronics, and the amazingly wide range of subjects in which you have no interest. --- From what I've seen so far, JT and I prefer to communicate ideas and solutions for problems through schematic diagrams and math, rather than through the use of dodgy, guarded verbiage, which seems to be your preferred method for avoiding anything which might trip you up later. --- If you ever get to it, instead of just mouthing opinion I'd be interested in learning how the voltage across the gap changed, and especially interested in learning how you managed to measure the current in the unconnected wire. You, not I, said that there would be current in such a wire. Can you explain how much? "Concentration and dilution" doesn't cut it. --- Sure it does, in a qualitative sense, and that's all that this discussion is about, so far. If you want to take it deeper by getting off of your lazy ass and doing some experimental work to prove your hypothesis then, by all means, do it. --- JT said there would be no voltage, but now seems to have changed his mind. --- An honest man admits his errors, so why do you fault him for that? Because he, like you, makes these mistakes because he's more interested in personal attacks and self-puffery than he is in discussing electronics. --- Where you're concerned, "discussing electronics" has far less to with civil discourse than it has to do with your goal of being the moderator of everything electronic and having everyone accept you as their anointed source of infallible wisdom. That may work with cheeky little cocksuckers like Ian, who haven't yet been around the block and are willing to kiss your ass to curry favor, but guess what? The big boys can see right through your ploy. --- That attitude makes you both far to eager to "correct" (ie, insult me) even if you have to be factually wrong to do it, which you usually are. --- If you think that correction is tantamount to insult, and that correction must be factually wrong because it's directed at you, then you have issues which need to be referred to, and addressed by, a mental health professional. --- So, say something new about alternators. --- Just to give you something to feed on? I don't think so. -- JF |
#96
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 04 Dec 2011 15:37:41 -0600, John Fields
wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: On Sun, 04 Dec 2011 05:26:54 -0600, John Fields wrote: On Sat, 03 Dec 2011 17:48:32 -0800, John Larkin wrote: On Sat, 03 Dec 2011 18:56:59 -0600, John Fields wrote: On Sat, 03 Dec 2011 09:28:17 -0800, John Larkin wrote: On Sat, 03 Dec 2011 08:23:23 -0700, Jim Thompson wrote: On Sat, 03 Dec 2011 04:24:47 -0600, John Fields wrote: On Fri, 02 Dec 2011 11:45:49 -0800, John Larkin m wrote: On Fri, 02 Dec 2011 07:51:45 -0700, Jim Thompson wrote: On Fri, 02 Dec 2011 09:11:00 -0500, JW wrote: On Fri, 02 Dec 2011 06:23:36 -0600 John Fields wrote in Message id: kafhd7lhrv6p13ogcl0lnpe9cljhjc0t7h@4ax .com: BTW, if you swing a magnet past a wire, what's induced in the wire? Is the wire connected to anything? Bwahahahahaha! Larkin would opine that there's a voltage end-to-end. ;-) ...Jim Thompson It's an alternator. A voltage is induced, and the wire/coil has some impedance. --- If one were to connect a voltmeter across the otherwise open ends of a conductor, and that conductor was excited by a varying magnetic field, the voltmeter would indeed register a varying voltage. The only way to connect the voltmeter is to use leads. Then you have a loop. If you keep the leads very close to the wire, as you reduce the loop area, the voltage goes to zero. After I posted I realized I'd put my foot in it because, in a way, that's how semiconductors work... particularly MOS. Mosfets are magnetic devices? The underlying cause, however, would be the concentration and dilution of charge at the ends of the wire. Indeed. That concentration and dilution would be caused by the movement of electrons in the wire, that movement being defined as current. Yep. ...Jim Thompson OK: make a 1 meter radius wire ring with a small gap. Push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second. What's the voltage across the gap? More importantly, what's the current in the wire? JF? JT? --- JL. Since it's _you_ who's been taken to task, it behooves you to defend yourself. You're very big at telling people what to do, but tiny at doing your own legwork so, instead of pretending to authority, if you've got a point to make and you want to make it physically, why not just shut the **** up, do the work, and report back with findings which incontrovertibly quash your detractors? That is, since you proposed the experiment, why don't _you_ make a 1 meter radius wire ring with a small gap, push through it a perpendicular, uniform magnetic field that ramps up at 1 T/second, and report back with what happened? It's impressive how much you and JT don't say about electronics, and the amazingly wide range of subjects in which you have no interest. --- From what I've seen so far, JT and I prefer to communicate ideas and solutions for problems through schematic diagrams and math, rather than through the use of dodgy, guarded verbiage, which seems to be your preferred method for avoiding anything which might trip you up later. --- If you ever get to it, instead of just mouthing opinion I'd be interested in learning how the voltage across the gap changed, and especially interested in learning how you managed to measure the current in the unconnected wire. You, not I, said that there would be current in such a wire. Can you explain how much? "Concentration and dilution" doesn't cut it. --- Sure it does, in a qualitative sense, and that's all that this discussion is about, so far. If you want to take it deeper by getting off of your lazy ass and doing some experimental work to prove your hypothesis then, by all means, do it. --- JT said there would be no voltage, but now seems to have changed his mind. --- An honest man admits his errors, so why do you fault him for that? Because he, like you, makes these mistakes because he's more interested in personal attacks and self-puffery than he is in discussing electronics. --- Where you're concerned, "discussing electronics" has far less to with civil discourse than it has to do with your goal of being the moderator of everything electronic and having everyone accept you as their anointed source of infallible wisdom. That may work with cheeky little cocksuckers like Ian, who haven't yet been around the block and are willing to kiss your ass to curry favor, but guess what? When you get mad, you get gay. The big boys can see right through your ploy. I bet you just *love* "The big boys." John |
#97
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 04 Dec 2011 15:37:41 -0600, John Fields
wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#98
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field"
wrote: "John Larkin" wrote in message .. . On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field" wrote: "John Larkin" wrote in message ... On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Thanks - might download it tomorrow. I committed a Great Sin on Friday: I *designed* a circuit by fiddling with Spice. It's a double-terminated LC filter feeding an opamp driver diffamp, an ADA4950-1, with an offset generator voltage divider, and all sorts of entangled loadings. Looking at the algebra, I bailed. Since I'd probably want to sim it to check any computed (and stocked!) parts values, why not just Spice it and fiddle? ftp://jjlarkin.lmi.net/ESM_sig_in.pdf John |
#99
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 04 Dec 2011 15:01:09 -0700, Jim Thompson
wrote: On Sun, 04 Dec 2011 15:37:41 -0600, John Fields wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson I have. You can't see it because you've claimed to have killfiled me. What an idiot. John |
#100
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
"John Larkin" wrote in message ... On Sun, 04 Dec 2011 15:01:09 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:37:41 -0600, John Fields wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson I have. You can't see it because you've claimed to have killfiled me. More to the point, the trolls have failed on this occasion to prevent me getting an answer by kicking off a flame war. KF'ing them probably helped - should've done it sooner. |
#101
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
"John Larkin" wrote in message ... On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field" wrote: "John Larkin" wrote in message . .. On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field" wrote: "John Larkin" wrote in message m... On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Thanks - might download it tomorrow. I committed a Great Sin on Friday: I *designed* a circuit by fiddling with Spice. It's a double-terminated LC filter feeding an opamp driver diffamp, an ADA4950-1, with an offset generator voltage divider, and all sorts of entangled loadings. Looking at the algebra, I bailed. Since I'd probably want to sim it to check any computed (and stocked!) parts values, why not just Spice it and fiddle? Having noticed quite a few apps on the LT d/l page, I wondered what switchercad does? |
#102
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field"
wrote: "John Larkin" wrote in message .. . On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field" wrote: "John Larkin" wrote in message ... On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field" wrote: "John Larkin" wrote in message om... On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Thanks - might download it tomorrow. I committed a Great Sin on Friday: I *designed* a circuit by fiddling with Spice. It's a double-terminated LC filter feeding an opamp driver diffamp, an ADA4950-1, with an offset generator voltage divider, and all sorts of entangled loadings. Looking at the algebra, I bailed. Since I'd probably want to sim it to check any computed (and stocked!) parts values, why not just Spice it and fiddle? Having noticed quite a few apps on the LT d/l page, I wondered what switchercad does? Switchercad is - I think - just another name for LT Spice. John |
#103
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Sun, 04 Dec 2011 15:01:09 -0700, Jim Thompson
wrote: On Sun, 04 Dec 2011 15:37:41 -0600, John Fields wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson We're still waiting, though it's no surprise... push the question back to technical details only, and Larkin enters "silent mode" :-) He'll not be heard of again in regard to this topic... except perhaps he may toss a few snarky "old hens" or "cluck-clucks" our way. But he'll have no technical answer, for he has no clue. What was that "university" he went to in Louisiana? DeVry ?:-) They ought to pull his "degree". ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#104
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Mon, 05 Dec 2011 10:32:35 -0800, John Larkin
wrote: On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field" wrote: "John Larkin" wrote in message . .. On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field" wrote: "John Larkin" wrote in message m... On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field" wrote: "John Larkin" wrote in message news:qndnd7593gkmhghcknui03m42ihpi3hvjk@4ax. com... On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Thanks - might download it tomorrow. I committed a Great Sin on Friday: I *designed* a circuit by fiddling with Spice. It's a double-terminated LC filter feeding an opamp driver diffamp, an ADA4950-1, with an offset generator voltage divider, and all sorts of entangled loadings. Looking at the algebra, I bailed. Since I'd probably want to sim it to check any computed (and stocked!) parts values, why not just Spice it and fiddle? Having noticed quite a few apps on the LT d/l page, I wondered what switchercad does? Switchercad is - I think - just another name for LT Spice. --- Indeed. Aren't you even beginning to be annoyed by the pilot fish who feeds on your waste and considers you to be his source of chum? -- JF |
#105
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields
wrote: On Mon, 05 Dec 2011 10:32:35 -0800, John Larkin wrote: On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field" wrote: "John Larkin" wrote in message ... On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field" wrote: "John Larkin" wrote in message om... On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field" wrote: "John Larkin" wrote in message news:qndnd7593gkmhghcknui03m42ihpi3hvjk@4ax .com... On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Thanks - might download it tomorrow. I committed a Great Sin on Friday: I *designed* a circuit by fiddling with Spice. It's a double-terminated LC filter feeding an opamp driver diffamp, an ADA4950-1, with an offset generator voltage divider, and all sorts of entangled loadings. Looking at the algebra, I bailed. Since I'd probably want to sim it to check any computed (and stocked!) parts values, why not just Spice it and fiddle? Having noticed quite a few apps on the LT d/l page, I wondered what switchercad does? Switchercad is - I think - just another name for LT Spice. --- Indeed. Aren't you even beginning to be annoyed by the pilot fish who feeds on your waste and considers you to be his source of chum? What a weird, foul old hen you are. John |
#106
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
John Larkin wrote:
On Mon, 05 Dec 2011 17:32:15 -0600, John Fields wrote: On Mon, 05 Dec 2011 10:32:35 -0800, John Larkin wrote: On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field" wrote: "John Larkin" wrote in message m... On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field" wrote: "John Larkin" wrote in message news:12knd7123kfcrt1ttfdjopp5g4tfh6vcjd@4ax. com... On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field" wrote: "John Larkin" wrote in message news:qndnd7593gkmhghcknui03m42ihpi3hvjk@4a x.com... On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Thanks - might download it tomorrow. I committed a Great Sin on Friday: I *designed* a circuit by fiddling with Spice. It's a double-terminated LC filter feeding an opamp driver diffamp, an ADA4950-1, with an offset generator voltage divider, and all sorts of entangled loadings. Looking at the algebra, I bailed. Since I'd probably want to sim it to check any computed (and stocked!) parts values, why not just Spice it and fiddle? Having noticed quite a few apps on the LT d/l page, I wondered what switchercad does? Switchercad is - I think - just another name for LT Spice. --- Indeed. Aren't you even beginning to be annoyed by the pilot fish who feeds on your waste and considers you to be his source of chum? What a weird, foul old hen you are. John flattering will get you no where John! Jamie |
#107
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Mon, 05 Dec 2011 19:47:47 -0500, Jamie
t wrote: John Larkin wrote: On Mon, 05 Dec 2011 17:32:15 -0600, John Fields wrote: On Mon, 05 Dec 2011 10:32:35 -0800, John Larkin wrote: On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field" wrote: "John Larkin" wrote in message om... On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field" wrote: "John Larkin" wrote in message news:12knd7123kfcrt1ttfdjopp5g4tfh6vcjd@4ax .com... On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field" wrote: "John Larkin" wrote in message news:qndnd7593gkmhghcknui03m42ihpi3hvjk@4 ax.com... On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Thanks - might download it tomorrow. I committed a Great Sin on Friday: I *designed* a circuit by fiddling with Spice. It's a double-terminated LC filter feeding an opamp driver diffamp, an ADA4950-1, with an offset generator voltage divider, and all sorts of entangled loadings. Looking at the algebra, I bailed. Since I'd probably want to sim it to check any computed (and stocked!) parts values, why not just Spice it and fiddle? Having noticed quite a few apps on the LT d/l page, I wondered what switchercad does? Switchercad is - I think - just another name for LT Spice. --- Indeed. Aren't you even beginning to be annoyed by the pilot fish who feeds on your waste and considers you to be his source of chum? What a weird, foul old hen you are. John flattering will get you no where John! Jamie He's still obsessed with excrement, too. He mentions it a lot more than he mentions electronics. Yuk. John |
#108
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
"John Larkin" wrote in message ... On Mon, 05 Dec 2011 19:47:47 -0500, Jamie t wrote: John Larkin wrote: On Mon, 05 Dec 2011 17:32:15 -0600, John Fields wrote: On Mon, 05 Dec 2011 10:32:35 -0800, John Larkin wrote: On Mon, 5 Dec 2011 18:16:30 -0000, "Ian Field" wrote: "John Larkin" wrote in message news:2rqnd75rhlp6opv164golnl7kq6r5uo49v@4ax. com... On Sun, 4 Dec 2011 20:54:52 -0000, "Ian Field" wrote: "John Larkin" wrote in message news:12knd7123kfcrt1ttfdjopp5g4tfh6vcjd@4a x.com... On Sun, 4 Dec 2011 19:21:21 -0000, "Ian Field" wrote: "John Larkin" wrote in message news:qndnd7593gkmhghcknui03m42ihpi3hvjk@ 4ax.com... On Sun, 04 Dec 2011 09:23:12 -0700, Jim Thompson wrote: On Wed, 30 Nov 2011 13:09:54 -0700, Jim Thompson wrote: On Sun, 27 Nov 2011 14:56:00 -0000, "Ian Field" wrote: Tinkering with the old Sturmey archer bicycle dynamo, I was wondering whether it would charge a 1.2Ah SLA any better if the loading was modified. The generator is rated 6V/3W, but off load at a decent rate of knots it can produce over a couple of hundred volts. What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter. Can anyone advise on the practicality of this please? Thanks. Bwahahahahaha! So this was the original post? Bwahahahahaha! ...Jim Thompson Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? Well its what I wanted to hear anyway, I might start thinking about a design for a buck converter to try it out and see what happens, might be possible to get away with a MC34063 - failing that maybe a discrete component design. Unfortunately my workshop has been dismantled for refurbishing and most of the stuff crammed into the shed - so no room to work in there either. When I tried LTspice I found it a PITA to use - maybe while deprived of my workshop I should give it another chance. I love LT Spice. It's not hard to use, and well worth the short learning curve. Here, try this: Thanks - might download it tomorrow. I committed a Great Sin on Friday: I *designed* a circuit by fiddling with Spice. It's a double-terminated LC filter feeding an opamp driver diffamp, an ADA4950-1, with an offset generator voltage divider, and all sorts of entangled loadings. Looking at the algebra, I bailed. Since I'd probably want to sim it to check any computed (and stocked!) parts values, why not just Spice it and fiddle? Having noticed quite a few apps on the LT d/l page, I wondered what switchercad does? Switchercad is - I think - just another name for LT Spice. --- Indeed. Aren't you even beginning to be annoyed by the pilot fish who feeds on your waste and considers you to be his source of chum? What a weird, foul old hen you are. John flattering will get you no where John! Jamie He's still obsessed with excrement, too. He mentions it a lot more than he mentions electronics. Yuk. Being insulted by such a creepy weirdo somehow seems rather trivial compared with being isulted by anyone of any conseqence. |
#109
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin
wrote: On Mon, 05 Dec 2011 19:47:47 -0500, Jamie wrote: John Larkin wrote: On Mon, 05 Dec 2011 17:32:15 -0600, John Fields wrote: Aren't you even beginning to be annoyed by the pilot fish who feeds on your waste and considers you to be his source of chum? What a weird, foul old hen you are. John flattering will get you no where John! Jamie He's still obsessed with excrement, too. He mentions it a lot more than he mentions electronics. Yuk. --- If I was obsessed with poop I'd reply to _all_ of your posts but, as it is, I generally prefer to steer away from the threads you infect and provide useful solutions for querants with problems. -- JF |
#110
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Tue, 06 Dec 2011 18:27:37 -0600, John Fields
wrote: On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin wrote: On Mon, 05 Dec 2011 19:47:47 -0500, Jamie t wrote: John Larkin wrote: On Mon, 05 Dec 2011 17:32:15 -0600, John Fields wrote: Aren't you even beginning to be annoyed by the pilot fish who feeds on your waste and considers you to be his source of chum? What a weird, foul old hen you are. John flattering will get you no where John! Jamie He's still obsessed with excrement, too. He mentions it a lot more than he mentions electronics. Yuk. --- If I was obsessed with poop I'd reply to _all_ of your posts but, as it is, I generally prefer to steer away from the threads you infect and provide useful solutions for querants with problems. JL always gets confused... he can't tell the difference between a querent (an inquirer) and queerants (those cretins who populate SF ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#111
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Mon, 05 Dec 2011 12:23:34 -0700, Jim Thompson
wrote: On Sun, 04 Dec 2011 15:01:09 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:37:41 -0600, John Fields wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson We're still waiting, though it's no surprise... push the question back to technical details only, and Larkin enters "silent mode" :-) --- Indeed. I can't recall a single instance where he boasts about his circuits and shows his work, although he's certainly critical about me showing mine. Something about that posting the math and working through the problem is something I shouldn't be doing in order to prove that what I'm talking about is right, mathematically, while out of the other side of his mouth he extols the virtues of the inexactness of qualitative exposition where _his_ "work" is concerned. --- He'll not be heard of again in regard to this topic... except perhaps he may toss a few snarky "old hens" or "cluck-clucks" our way. --- That sure seems to be his wont - name-calling - when he's faced with having to reply to anything where he has to admit to error or which makes him feel uncomfortable because he can see it leading to where he dare not go. --- But he'll have no technical answer, for he has no clue. --- Be fair. John's a smart guy, but considers himself to be above the hoi polloi, (anyone who isn't Phil Hobbs, whom he knows he can never rise above) so he must use any subterfuge available in order to make it seem like those who question his "edicts" are wrong. -- JF |
#112
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Tue, 6 Dec 2011 15:50:26 -0000, "Ian Field"
wrote: Being insulted by such a creepy weirdo somehow seems rather trivial compared with being isulted by anyone of any conseqence. --- And yet, instead of ignoring, as one would have done if the insult was trivial, you chose to respond, in whatever venue. You're a fraud. -- JF |
#113
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Tue, 06 Dec 2011 18:27:37 -0600, John Fields
wrote: On Mon, 05 Dec 2011 16:55:21 -0800, John Larkin wrote: On Mon, 05 Dec 2011 19:47:47 -0500, Jamie t wrote: John Larkin wrote: On Mon, 05 Dec 2011 17:32:15 -0600, John Fields wrote: Aren't you even beginning to be annoyed by the pilot fish who feeds on your waste and considers you to be his source of chum? What a weird, foul old hen you are. John flattering will get you no where John! Jamie He's still obsessed with excrement, too. He mentions it a lot more than he mentions electronics. Yuk. --- If I was obsessed with poop I'd reply to _all_ of your posts but, as it is, I generally prefer to steer away from the threads you infect and provide useful solutions for querants with problems. OK, address the alternator question. John |
#114
Posted to alt.binaries.schematics.electronic,sci.electronics.design
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Very low power dynamo (alternator actually).
On Tue, 06 Dec 2011 19:59:02 -0600, John Fields
wrote: On Tue, 6 Dec 2011 15:50:26 -0000, "Ian Field" wrote: Being insulted by such a creepy weirdo somehow seems rather trivial compared with being isulted by anyone of any conseqence. --- And yet, instead of ignoring, as one would have done if the insult was trivial, you chose to respond, in whatever venue. You're a fraud. I'm trying to sort out who is the pimp and who is the who JL Ian ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#115
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Tue, 06 Dec 2011 19:34:13 -0600, John Fields
wrote: On Mon, 05 Dec 2011 12:23:34 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:01:09 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:37:41 -0600, John Fields wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson We're still waiting, though it's no surprise... push the question back to technical details only, and Larkin enters "silent mode" :-) --- Indeed. I can't recall a single instance where he boasts about his circuits and shows his work, although he's certainly critical about me showing mine. Something about that posting the math and working through the problem is something I shouldn't be doing in order to prove that what I'm talking about is right, mathematically, while out of the other side of his mouth he extols the virtues of the inexactness of qualitative exposition where _his_ "work" is concerned. --- He'll not be heard of again in regard to this topic... except perhaps he may toss a few snarky "old hens" or "cluck-clucks" our way. --- That sure seems to be his wont - name-calling - when he's faced with having to reply to anything where he has to admit to error or which makes him feel uncomfortable because he can see it leading to where he dare not go. --- But he'll have no technical answer, for he has no clue. --- Be fair. I've given JL ample opportunity to answer the TECHNICAL question... he won't/can't. John's a smart guy, but considers himself to be above the hoi polloi, (anyone who isn't Phil Hobbs, whom he knows he can never rise above) so he must use any subterfuge available in order to make it seem like those who question his "edicts" are wrong. ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#116
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Tue, 06 Dec 2011 19:34:13 -0600, John Fields
wrote: On Mon, 05 Dec 2011 12:23:34 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:01:09 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:37:41 -0600, John Fields wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson We're still waiting, though it's no surprise... push the question back to technical details only, and Larkin enters "silent mode" :-) --- Indeed. I can't recall a single instance where he boasts about his circuits Right, I don't boast about circuits. I do like to discuss them. and shows his work, How about this? It sort of evolved in some recent SED discussions. ftp://jjlarkin.lmi.net/ESM_power.pdf and the board is ftp://jjlarkin.lmi.net/ESM_pcb.gif I post all sorts of schematics, from goofy concepts to sections of actual in-production products, like this one. And you mostly whine. although he's certainly critical about me showing mine. Only when you get them wrong. Something about that posting the math and working through the problem is something I shouldn't be doing in order to prove that what I'm talking about is right, mathematically, while out of the other side of his mouth he extols the virtues of the inexactness of qualitative exposition where _his_ "work" is concerned. --- He'll not be heard of again in regard to this topic... except perhaps he may toss a few snarky "old hens" or "cluck-clucks" our way. --- That sure seems to be his wont - name-calling - when he's faced with having to reply to anything where he has to admit to error or which makes him feel uncomfortable because he can see it leading to where he dare not go. --- But he'll have no technical answer, for he has no clue. --- Be fair. John's a smart guy, but considers himself to be above the hoi polloi, (anyone who isn't Phil Hobbs, whom he knows he can never rise above) "Rise above" is meaningless. Phil and I do different things. so he must use any subterfuge available in order to make it seem like those who question his "edicts" are wrong. Edicts? You talk like I'm plotting to become the Emperor of Usenet. That's silly. John |
#117
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Tue, 06 Dec 2011 19:28:55 -0700, Jim Thompson
wrote: On Tue, 06 Dec 2011 19:34:13 -0600, John Fields wrote: On Mon, 05 Dec 2011 12:23:34 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:01:09 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:37:41 -0600, John Fields wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson We're still waiting, though it's no surprise... push the question back to technical details only, and Larkin enters "silent mode" :-) --- Indeed. I can't recall a single instance where he boasts about his circuits and shows his work, although he's certainly critical about me showing mine. Something about that posting the math and working through the problem is something I shouldn't be doing in order to prove that what I'm talking about is right, mathematically, while out of the other side of his mouth he extols the virtues of the inexactness of qualitative exposition where _his_ "work" is concerned. --- He'll not be heard of again in regard to this topic... except perhaps he may toss a few snarky "old hens" or "cluck-clucks" our way. --- That sure seems to be his wont - name-calling - when he's faced with having to reply to anything where he has to admit to error or which makes him feel uncomfortable because he can see it leading to where he dare not go. --- But he'll have no technical answer, for he has no clue. --- Be fair. I've given JL ample opportunity to answer the TECHNICAL question... he won't/can't. You've killfiled me, you incredible moron. Of course you can't see what I post. Incredible moron! John |
#118
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Tue, 06 Dec 2011 21:09:37 -0800 John Larkin
wrote in Message id: : On Tue, 06 Dec 2011 19:28:55 -0700, Jim Thompson wrote: On Tue, 06 Dec 2011 19:34:13 -0600, John Fields wrote: On Mon, 05 Dec 2011 12:23:34 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:01:09 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:37:41 -0600, John Fields wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin m wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson We're still waiting, though it's no surprise... push the question back to technical details only, and Larkin enters "silent mode" :-) --- Indeed. I can't recall a single instance where he boasts about his circuits and shows his work, although he's certainly critical about me showing mine. Something about that posting the math and working through the problem is something I shouldn't be doing in order to prove that what I'm talking about is right, mathematically, while out of the other side of his mouth he extols the virtues of the inexactness of qualitative exposition where _his_ "work" is concerned. --- He'll not be heard of again in regard to this topic... except perhaps he may toss a few snarky "old hens" or "cluck-clucks" our way. --- That sure seems to be his wont - name-calling - when he's faced with having to reply to anything where he has to admit to error or which makes him feel uncomfortable because he can see it leading to where he dare not go. --- But he'll have no technical answer, for he has no clue. --- Be fair. I've given JL ample opportunity to answer the TECHNICAL question... he won't/can't. You've killfiled me, you incredible moron. Of course you can't see what I post. Incredible moron! Perhaps JT has one of Highly-Evolved Super-Special Kill Filters that only allow technical stuff though? Ha! Bet you didn't consider THAT one! |
#119
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Tue, 06 Dec 2011 21:07:54 -0800, John Larkin
wrote: On Tue, 06 Dec 2011 19:34:13 -0600, John Fields wrote: On Mon, 05 Dec 2011 12:23:34 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:01:09 -0700, Jim Thompson wrote: On Sun, 04 Dec 2011 15:37:41 -0600, John Fields wrote: On Sun, 04 Dec 2011 08:18:22 -0800, John Larkin wrote: [snip] So, say something new about alternators. --- Just to give you something to feed on? I don't think so. I'll say something new... Perhaps Larkin would be happy to address Ian's question, "What I was wondering was whether its possible to get more energy into the battery by letting the generator output voltage stretch its legs so to speak and convert the excessive voltage down with a buck converter"? How about it, JL? Address the original question with your wisdom. Dazzle us with your brilliance. We're waiting. ...Jim Thompson We're still waiting, though it's no surprise... push the question back to technical details only, and Larkin enters "silent mode" :-) --- Indeed. I can't recall a single instance where he boasts about his circuits Right, I don't boast about circuits. I do like to discuss them. and shows his work, How about this? It sort of evolved in some recent SED discussions. ftp://jjlarkin.lmi.net/ESM_power.pdf --- That's more like it! Keep up the good work. --- and the board is ftp://jjlarkin.lmi.net/ESM_pcb.gif --- That's just boasting; it adds nothing to the discussion. --- I post all sorts of schematics, from goofy concepts to sections of actual in-production products, like this one. And you mostly whine. --- You call it whining because, of course, you try to trivialize any criticism directed at you. --- although he's certainly critical about me showing mine. Only when you get them wrong. --- You don't criticize, you gloat. --- Something about that posting the math and working through the problem is something I shouldn't be doing in order to prove that what I'm talking about is right, mathematically, while out of the other side of his mouth he extols the virtues of the inexactness of qualitative exposition where _his_ "work" is concerned. --- He'll not be heard of again in regard to this topic... except perhaps he may toss a few snarky "old hens" or "cluck-clucks" our way. --- That sure seems to be his wont - name-calling - when he's faced with having to reply to anything where he has to admit to error or which makes him feel uncomfortable because he can see it leading to where he dare not go. --- But he'll have no technical answer, for he has no clue. --- Be fair. John's a smart guy, but considers himself to be above the hoi polloi, (anyone who isn't Phil Hobbs, whom he knows he can never rise above) "Rise above" is meaningless. Phil and I do different things. --- While it's lacking in your other posts, the deference in your tone when you communicate with him makes it easy to see that you consider yourself to be his inferior. --- so he must use any subterfuge available in order to make it seem like those who question his "edicts" are wrong. Edicts? You talk like I'm plotting to become the Emperor of Usenet. That's silly. --- From: http://en.wikipedia.org/wiki/Quotation_mark#Irony "Another common use of quotation marks is to indicate or call attention to ironic or apologetic words: He shared his "wisdom" with me. The lunch lady plopped a glob of "food" onto my tray." -- JF |
#120
Posted to alt.binaries.schematics.electronic
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Very low power dynamo (alternator actually).
On Tue, 06 Dec 2011 21:09:37 -0800, John Larkin
wrote: On Tue, 06 Dec 2011 19:28:55 -0700, Jim Thompson wrote: I've given JL ample opportunity to answer the TECHNICAL question... he won't/can't. You've killfiled me, you incredible moron. Of course you can't see what I post. Incredible moron! --- Speaking of incredulity, it should be obvious, even to you, that since he's responding to your posts he's either unfiltered you or is reading them from unfiltered sources. -- JF |
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