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#41
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Tue, 02 Oct 2012 21:20:47 -0700, John Larkin
wrote: On Tue, 02 Oct 2012 21:11:23 -0700, Jim Thompson wrote: On Tue, 02 Oct 2012 20:31:25 -0700, John Larkin wrote: On Tue, 02 Oct 2012 17:50:14 -0700, Jim Thompson wrote: On Thu, 27 Sep 2012 12:44:00 -0700, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson I ended up with this... http://www.analog-innovations.com/SE...00056_MOD3.pdf Using a depletion-mode NMOS FET. I have a version I personally liked better that used a cheapy TRIAC under DDROP3, but I could not find a way to get some "free" power for the gate... needed while pumping, goes away when overcome by the switcher coming on line. (This is a wild high PFC, high efficiency dude, where the customer is squeezing me for milliwatts :-) ...Jim Thompson That's crazy. Not only is it expensive, once the 24 volt supply kicks in, it dissipates most of a watt, doing nothing. Boy, did I just save you some embarassment. You're so ignorant you don't know how it works. Thanks for the exhibition! ...Jim Thompson Well, how much power do R1, R2, the TL431, and ROFF dissipate once the main supply is up? Harder question: what's the worst-case dissipation of the fet if the main supply doesn't come up, like if the load is shorted or something? Bwahahahahaha! You lost the thread... actually two threads... and a controller chip... Follow your own advice... do your own searching ;-) ...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 | | | Voice  480)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. |
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#42
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Tue, 02 Oct 2012 22:08:05 -0700, Jim Thompson
wrote: On Tue, 02 Oct 2012 21:20:47 -0700, John Larkin wrote: On Tue, 02 Oct 2012 21:11:23 -0700, Jim Thompson wrote: On Tue, 02 Oct 2012 20:31:25 -0700, John Larkin wrote: On Tue, 02 Oct 2012 17:50:14 -0700, Jim Thompson wrote: On Thu, 27 Sep 2012 12:44:00 -0700, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson I ended up with this... http://www.analog-innovations.com/SE...00056_MOD3.pdf Using a depletion-mode NMOS FET. I have a version I personally liked better that used a cheapy TRIAC under DDROP3, but I could not find a way to get some "free" power for the gate... needed while pumping, goes away when overcome by the switcher coming on line. (This is a wild high PFC, high efficiency dude, where the customer is squeezing me for milliwatts :-) ...Jim Thompson That's crazy. Not only is it expensive, once the 24 volt supply kicks in, it dissipates most of a watt, doing nothing. Boy, did I just save you some embarassment. You're so ignorant you don't know how it works. Thanks for the exhibition! ...Jim Thompson Well, how much power do R1, R2, the TL431, and ROFF dissipate once the main supply is up? Harder question: what's the worst-case dissipation of the fet if the main supply doesn't come up, like if the load is shorted or something? Bwahahahahaha! You lost the thread... actually two threads... and a controller chip... Follow your own advice... do your own searching ;-) ...Jim Thompson How much power do R1, R2, the TL431, and ROFF dissipate once the main supply is up? -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators |
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#43
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Tue, 02 Oct 2012 21:20:47 -0700, John Larkin
wrote: On Tue, 02 Oct 2012 21:11:23 -0700, Jim Thompson wrote: On Tue, 02 Oct 2012 20:31:25 -0700, John Larkin wrote: On Tue, 02 Oct 2012 17:50:14 -0700, Jim Thompson wrote: On Thu, 27 Sep 2012 12:44:00 -0700, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson I ended up with this... http://www.analog-innovations.com/SE...00056_MOD3.pdf Using a depletion-mode NMOS FET. I have a version I personally liked better that used a cheapy TRIAC under DDROP3, but I could not find a way to get some "free" power for the gate... needed while pumping, goes away when overcome by the switcher coming on line. (This is a wild high PFC, high efficiency dude, where the customer is squeezing me for milliwatts :-) ...Jim Thompson That's crazy. Not only is it expensive, once the 24 volt supply kicks in, it dissipates most of a watt, doing nothing. Boy, did I just save you some embarassment. You're so ignorant you don't know how it works. Thanks for the exhibition! ...Jim Thompson Well, how much power do R1, R2, the TL431, and ROFF dissipate once the main supply is up? It was "my bad" to have emulated the main supply with a pulse source... doesn't work that way at all, but I can't show the customer's circuitry. In actual practice a PFC/PWM chip comes alive and the switcher starts. But that "20V" sags since the charge pump can only support ~24mA. The switcher takes over at 14.5V (about 250ms into the action), the FET gate is pulled low to shut off the wasted power. The gate resistor is actually 220K, but the demo TL431 won't work (because of Iq) to show how "regulation" might be accomplished. Harder question: what's the worst-case dissipation of the fet if the main supply doesn't come up, like if the load is shorted or something? You are trying to amuse yourself by throwing sand in the air. But you don't understand how it works. Will some first year EE student explain it on Larkin ?:-) ...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 | | | Voice 480)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. |
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#44
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 03 Oct 2012 07:42:51 -0700, Jim Thompson
wrote: On Tue, 02 Oct 2012 21:20:47 -0700, John Larkin wrote: On Tue, 02 Oct 2012 21:11:23 -0700, Jim Thompson wrote: On Tue, 02 Oct 2012 20:31:25 -0700, John Larkin wrote: On Tue, 02 Oct 2012 17:50:14 -0700, Jim Thompson wrote: On Thu, 27 Sep 2012 12:44:00 -0700, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson I ended up with this... http://www.analog-innovations.com/SE...00056_MOD3.pdf Using a depletion-mode NMOS FET. I have a version I personally liked better that used a cheapy TRIAC under DDROP3, but I could not find a way to get some "free" power for the gate... needed while pumping, goes away when overcome by the switcher coming on line. (This is a wild high PFC, high efficiency dude, where the customer is squeezing me for milliwatts :-) ...Jim Thompson That's crazy. Not only is it expensive, once the 24 volt supply kicks in, it dissipates most of a watt, doing nothing. Boy, did I just save you some embarassment. You're so ignorant you don't know how it works. Thanks for the exhibition! ...Jim Thompson Well, how much power do R1, R2, the TL431, and ROFF dissipate once the main supply is up? It was "my bad" to have emulated the main supply with a pulse source... doesn't work that way at all, but I can't show the customer's circuitry. I was thinking about that, specifically where that idealized 300 volt-peak full-wave-rectified waveform came from. If it is through diodes, there's no pull-down to pump the series RC thing; if it also drives a 24-volt non-PFC switcher front-end, you won't get that waveform. If the startup circuit has to be working before a main PFC switcher starts up, there are all sorts of interesting tangles. If the switcher starts up on its own, what's this circuit for? Standby power for some controls? It would still have to work when the PFC was down. In actual practice a PFC/PWM chip comes alive and the switcher starts. But that "20V" sags since the charge pump can only support ~24mA. The switcher takes over at 14.5V (about 250ms into the action), the FET gate is pulled low to shut off the wasted power. The gate resistor is actually 220K, but the demo TL431 won't work (because of Iq) to show how "regulation" might be accomplished. Right. ROFF is obviously over-constrained, hence my question about power consumption, which you elected to not answer. There's no ROFF value that works sensibly. A much simpler circuit would work. Does this rig have to work from 90 to 264 volts AC? That, and the Idss spread, gets interesting. Harder question: what's the worst-case dissipation of the fet if the main supply doesn't come up, like if the load is shorted or something? You are trying to amuse yourself by throwing sand in the air. But you don't understand how it works. Will some first year EE student explain it on Larkin ?:-) I understand how it doesn't work. And so far, it doesn't. You've made a pretty quick transition from "I ended up with this..." to "my bad." But you're not done yet. ps - the answer is just about 1 watt lost, with your values of R1, R2, the TL431, and ROFF. That is, for the record, about 1000 of your customer's milliwatts. Keep trying. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators |
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#45
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 03 Oct 2012 08:29:37 -0700, John Larkin
wrote: On Wed, 03 Oct 2012 07:42:51 -0700, Jim Thompson wrote: On Tue, 02 Oct 2012 21:20:47 -0700, John Larkin wrote: On Tue, 02 Oct 2012 21:11:23 -0700, Jim Thompson wrote: On Tue, 02 Oct 2012 20:31:25 -0700, John Larkin wrote: On Tue, 02 Oct 2012 17:50:14 -0700, Jim Thompson wrote: On Thu, 27 Sep 2012 12:44:00 -0700, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson I ended up with this... http://www.analog-innovations.com/SE...00056_MOD3.pdf Using a depletion-mode NMOS FET. I have a version I personally liked better that used a cheapy TRIAC under DDROP3, but I could not find a way to get some "free" power for the gate... needed while pumping, goes away when overcome by the switcher coming on line. (This is a wild high PFC, high efficiency dude, where the customer is squeezing me for milliwatts :-) ...Jim Thompson That's crazy. Not only is it expensive, once the 24 volt supply kicks in, it dissipates most of a watt, doing nothing. Boy, did I just save you some embarassment. You're so ignorant you don't know how it works. Thanks for the exhibition! ...Jim Thompson Well, how much power do R1, R2, the TL431, and ROFF dissipate once the main supply is up? It was "my bad" to have emulated the main supply with a pulse source... doesn't work that way at all, but I can't show the customer's circuitry. I was thinking about that, specifically where that idealized 300 volt-peak full-wave-rectified waveform came from. If it is through diodes, there's no pull-down to pump the series RC thing; if it also drives a 24-volt non-PFC switcher front-end, you won't get that waveform. If the startup circuit has to be working before a main PFC switcher starts up, there are all sorts of interesting tangles. If the switcher starts up on its own, what's this circuit for? Standby power for some controls? It would still have to work when the PFC was down. In actual practice a PFC/PWM chip comes alive and the switcher starts. But that "20V" sags since the charge pump can only support ~24mA. The switcher takes over at 14.5V (about 250ms into the action), the FET gate is pulled low to shut off the wasted power. The gate resistor is actually 220K, but the demo TL431 won't work (because of Iq) to show how "regulation" might be accomplished. Right. ROFF is obviously over-constrained, hence my question about power consumption, which you elected to not answer. There's no ROFF value that works sensibly. A much simpler circuit would work. Does this rig have to work from 90 to 264 volts AC? That, and the Idss spread, gets interesting. Harder question: what's the worst-case dissipation of the fet if the main supply doesn't come up, like if the load is shorted or something? You are trying to amuse yourself by throwing sand in the air. But you don't understand how it works. Will some first year EE student explain it on Larkin ?:-) I understand how it doesn't work. And so far, it doesn't. You've made a pretty quick transition from "I ended up with this..." to "my bad." But you're not done yet. ps - the answer is just about 1 watt lost, with your values of R1, R2, the TL431, and ROFF. That is, for the record, about 1000 of your customer's milliwatts. Keep trying. My fault for trying to demo without telling ;-) There's roughly 400mW consumed while bringing up the switcher. Drops to ~1mW when turned off. If the load is shorted ?:-) 212mW in RDROP, 31.9mW in the FET. See, you clearly don't understand how these things work :-) ...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 | | | Voice 480)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. |
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#46
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 03 Oct 2012 08:49:45 -0700, Jim Thompson
wrote: On Wed, 03 Oct 2012 08:29:37 -0700, John Larkin wrote: On Wed, 03 Oct 2012 07:42:51 -0700, Jim Thompson wrote: On Tue, 02 Oct 2012 21:20:47 -0700, John Larkin wrote: On Tue, 02 Oct 2012 21:11:23 -0700, Jim Thompson wrote: On Tue, 02 Oct 2012 20:31:25 -0700, John Larkin wrote: On Tue, 02 Oct 2012 17:50:14 -0700, Jim Thompson wrote: On Thu, 27 Sep 2012 12:44:00 -0700, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson I ended up with this... http://www.analog-innovations.com/SE...00056_MOD3.pdf Using a depletion-mode NMOS FET. I have a version I personally liked better that used a cheapy TRIAC under DDROP3, but I could not find a way to get some "free" power for the gate... needed while pumping, goes away when overcome by the switcher coming on line. (This is a wild high PFC, high efficiency dude, where the customer is squeezing me for milliwatts :-) ...Jim Thompson That's crazy. Not only is it expensive, once the 24 volt supply kicks in, it dissipates most of a watt, doing nothing. Boy, did I just save you some embarassment. You're so ignorant you don't know how it works. Thanks for the exhibition! ...Jim Thompson Well, how much power do R1, R2, the TL431, and ROFF dissipate once the main supply is up? It was "my bad" to have emulated the main supply with a pulse source... doesn't work that way at all, but I can't show the customer's circuitry. I was thinking about that, specifically where that idealized 300 volt-peak full-wave-rectified waveform came from. If it is through diodes, there's no pull-down to pump the series RC thing; if it also drives a 24-volt non-PFC switcher front-end, you won't get that waveform. If the startup circuit has to be working before a main PFC switcher starts up, there are all sorts of interesting tangles. If the switcher starts up on its own, what's this circuit for? Standby power for some controls? It would still have to work when the PFC was down. In actual practice a PFC/PWM chip comes alive and the switcher starts. But that "20V" sags since the charge pump can only support ~24mA. The switcher takes over at 14.5V (about 250ms into the action), the FET gate is pulled low to shut off the wasted power. The gate resistor is actually 220K, but the demo TL431 won't work (because of Iq) to show how "regulation" might be accomplished. Right. ROFF is obviously over-constrained, hence my question about power consumption, which you elected to not answer. There's no ROFF value that works sensibly. A much simpler circuit would work. Does this rig have to work from 90 to 264 volts AC? That, and the Idss spread, gets interesting. Harder question: what's the worst-case dissipation of the fet if the main supply doesn't come up, like if the load is shorted or something? You are trying to amuse yourself by throwing sand in the air. But you don't understand how it works. Will some first year EE student explain it on Larkin ?:-) I understand how it doesn't work. And so far, it doesn't. You've made a pretty quick transition from "I ended up with this..." to "my bad." But you're not done yet. ps - the answer is just about 1 watt lost, with your values of R1, R2, the TL431, and ROFF. That is, for the record, about 1000 of your customer's milliwatts. Keep trying. My fault for trying to demo without telling ;-) You always brag about designing great circuits without "telling." You troll for ideas, then hide behind "proprietary" when you do settle on something... even if you got the ideas here. There's roughly 400mW consumed while bringing up the switcher. Drops to ~1mW when turned off. Then you have some other circuitry that specifically turns off the startup supply, that is not shown in the circuit that you posted here. What is it? Your circuit is complex. Something much simpler would work, and would go to very low power all by itself once the main switcher comes up. If the load is shorted ?:-) 212mW in RDROP, 31.9mW in the FET. See, you clearly don't understand how these things work :-) Is that worst-case? The fet Idss is min 20 mA, typ 80, no specified max. There is some value of Idss that results in the maximum power dissipation. What is that value, and what is the dissipation? You should be able to tease Idss to dump around a watt in the fet, which is fine if you heat sink it. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators |
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#47
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 03 Oct 2012 10:42:54 -0700, John Larkin
wrote: [snip] If the design is for universal, CE-tested use, AC line voltage can go to 264 RMS. That's 373 peak. In that case, the maximum fet dissipation can be teased well over 1 watt; try it. That fet is rated 1.8 watts max. If you sim one case, with nominal line voltage and typical Idss, you are taking risks. Test lab time is expensive; product recalls and fires are more expensive. Your sim seems to assume 240 line voltage. It's down-right amusing, YOU lecturing me on rigorous simulation. I often do 45 PVT corners. YOU, You post nothing but vague crap. Once I decide on a configuration I'll beat the crap out of it to make sure it's a valid design. Go sit in the corner and suck your thumb and contemplate how many other ways you can think of to pimp yourself :-) ...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 | | | Voice 480)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. |
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#48
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin
wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. --- C-limited supplies are commonly used for things like LED night-lights. --- C = current? Idiot whining again. --- Then what does C-limited mean? Be careful, that's a trick question. :-) --- Since resistors are way cheaper than caps, my feeling is that using cheap 2mA LEDs in parallel opposition with a 1/4 watt resistor in series with 120V mains will do the trick. A 1/4 watt resistor dissipating 1/4 watt in a confined space won't last long. --- Could you be a little less specific, please? --- At 240 volts, 2 mA dissipates a half watt. --- Oh, goody!!! You know Ohm's law too!!! --- You? --- It does take good engineering to do them right. --- Then you don't make LED night-lights, I take it? What an ass you are. --- Ah, then the inference didn't go over your head? --- I certainly don't make night lights for production. My stuff sells for kilobucks, not cents. I have done a few for myself, for personal applications. --- Wowie zowie! How ever so kewl! --- I assume that JT has some commercial application in mind, with a low vampire power budget, and has no ideas of his own. --- With no ideas of his own? I think the US government would quarrel with you on that one, and win. -- JF |
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#49
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 03 Oct 2012 15:39:58 -0500, John Fields
wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. -- John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation |
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#50
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 03 Oct 2012 11:49:26 -0700, Jim Thompson
wrote: On Wed, 03 Oct 2012 10:42:54 -0700, John Larkin wrote: [snip] If the design is for universal, CE-tested use, AC line voltage can go to 264 RMS. That's 373 peak. In that case, the maximum fet dissipation can be teased well over 1 watt; try it. That fet is rated 1.8 watts max. If you sim one case, with nominal line voltage and typical Idss, you are taking risks. Test lab time is expensive; product recalls and fires are more expensive. Your sim seems to assume 240 line voltage. It's down-right amusing, YOU lecturing me on rigorous simulation. I often do 45 PVT corners. YOU, You post nothing but vague crap. Once I decide on a configuration I'll beat the crap out of it to make sure it's a valid design. Go sit in the corner and suck your thumb and contemplate how many other ways you can think of to pimp yourself :-) ...Jim Thompson Quote Jim: "That's not the real circuit." "Once I decide on a configuration..." So, no good ideas yet? This is awfully simple; what's wrong? -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators |
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#51
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
John Larkin wrote:
On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. incandescent lamp in series, drops back down to low R afterwards, keeps every one happy  Actually, a depletion mode mosfet inseries with a network can act as a current limiter, give you low Ron values when not hitting the current wall. That should make the heat radiator police happy. Jamie |
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#52
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 03 Oct 2012 14:55:09 -0700, John Larkin
wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. --- In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles. -- JF |
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#53
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Thu, 04 Oct 2012 14:40:04 -0500, John Fields
wrote: On Wed, 03 Oct 2012 14:55:09 -0700, John Larkin wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. --- In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles. All you do is whine. Hey, the Blue Angels are buzzing the building. I'm headed for the roof. -- John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation |
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#54
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Thu, 04 Oct 2012 13:14:50 -0700, John Larkin
wrote: On Thu, 04 Oct 2012 14:40:04 -0500, John Fields wrote: On Wed, 03 Oct 2012 14:55:09 -0700, John Larkin wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin m wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. --- In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles. All you do is whine. Hey, the Blue Angels are buzzing the building. I'm headed for the roof. --- All you do is run. -- JF |
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#55
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Fri, 05 Oct 2012 19:14:25 -0400, Jamie
t wrote: John Fields wrote: On Thu, 04 Oct 2012 13:14:50 -0700, John Larkin wrote: On Thu, 04 Oct 2012 14:40:04 -0500, John Fields wrote: On Wed, 03 Oct 2012 14:55:09 -0700, John Larkin wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin m wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. --- In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles. All you do is whine. Hey, the Blue Angels are buzzing the building. I'm headed for the roof. --- All you do is run. Could also be signs of boredism? --- In response to any of _your_ posts, more than likely. -- JF |
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#56
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
John Fields wrote:
On Thu, 04 Oct 2012 13:14:50 -0700, John Larkin wrote: On Thu, 04 Oct 2012 14:40:04 -0500, John Fields wrote: On Wed, 03 Oct 2012 14:55:09 -0700, John Larkin wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. --- In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles. All you do is whine. Hey, the Blue Angels are buzzing the building. I'm headed for the roof. --- All you do is run. Could also be signs of boredism? Jamie |
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#57
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 03 Oct 2012 22:23:50 -0400, Jamie
t wrote: John Larkin wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. incandescent lamp in series, drops back down to low R afterwards, keeps every one happy --- -- JF |
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#58
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
In sci.electronics.design Tom Biasi wrote:
On 9/27/2012 3:44 PM, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson A long,long time ago in a place not so far away I used a transformer made by Sola that had a matched resonant capacitor. ferroresonant transformer- they're peculiar beasts. |
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#59
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Fri, 23 Nov 2012 23:59:56 +0000 (UTC), Cydrome Leader
wrote: In sci.electronics.design Tom Biasi wrote: On 9/27/2012 3:44 PM, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson A long,long time ago in a place not so far away I used a transformer made by Sola that had a matched resonant capacitor. ferroresonant transformer- they're peculiar beasts. --- Ferroresonant? -- JF |
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#60
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Fri, 23 Nov 2012 18:17:23 -0600, John Fields
wrote: On Fri, 23 Nov 2012 23:59:56 +0000 (UTC), Cydrome Leader wrote: In sci.electronics.design Tom Biasi wrote: On 9/27/2012 3:44 PM, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson A long,long time ago in a place not so far away I used a transformer made by Sola that had a matched resonant capacitor. ferroresonant transformer- they're peculiar beasts. --- Ferroresonant? Ferroresonant! |
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#61
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
In sci.electronics.design John Larkin wrote:
On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, so it can be shorted by a low voltage switch. If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. C-limited supplies are commonly used for things like LED night-lights. It does take good engineering to do them right. Not sure anybody cares, but the P3 killawatt meter uses cap shunter power supply. Those thigs have no memory, so if you lose power you lose all your logged data. I figured, easy, I'll toss a supercap in there, no big deal, and who cares if the display stays on. Of course that never worked as the current from that power supply was close to nothing and unable to charge the cap in the first place. Even being plugged in for days didn't help as the leakage probably exceeded what the watt meter itself used. |
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#62
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On 9/27/2012 5:22 PM, Tom Biasi wrote:
On 9/27/2012 3:44 PM, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson A long,long time ago in a place not so far away I used a transformer made by Sola that had a matched resonant capacitor. Tom Years ago at a hamfest booth, I had a vendor begging me to take one off his table. It weighed about 50 lbs, he was down to $9. It was closing time. I didn't get it. It would still be in my storage. Mikek |
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#63
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On 10/3/2012 9:56 PM, John Larkin wrote:
On Wed, 03 Oct 2012 11:49:26 -0700, Jim Thompson Go sit in the corner and suck your thumb and contemplate how many other ways you can think of to pimp yourself:-) ...Jim Thompson Quote Jim: "That's not the real circuit." "Once I decide on a configuration..." So, no good ideas yet? This is awfully simple; what's wrong? I swear to god I would never do business with either of you two. You both act like 12 year olds and right here in full public view. Simply amazing... Rick |
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#64
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Fri, 23 Nov 2012 16:39:54 -0800, John Larkin
wrote: On Fri, 23 Nov 2012 18:17:23 -0600, John Fields wrote: On Fri, 23 Nov 2012 23:59:56 +0000 (UTC), Cydrome Leader wrote: In sci.electronics.design Tom Biasi wrote: On 9/27/2012 3:44 PM, Jim Thompson wrote: AC Cap Dropper DC Power Supply Anyone know of a clever way to regulate other than the typical brute-force zener clamp? ...Jim Thompson A long,long time ago in a place not so far away I used a transformer made by Sola that had a matched resonant capacitor. ferroresonant transformer- they're peculiar beasts. --- Ferroresonant? Ferroresonant! Ferroresonant. -- JF |
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#65
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Fri, 05 Oct 2012 12:21:30 -0500, John Fields
wrote: On Thu, 04 Oct 2012 13:14:50 -0700, John Larkin wrote: On Thu, 04 Oct 2012 14:40:04 -0500, John Fields wrote: On Wed, 03 Oct 2012 14:55:09 -0700, John Larkin wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. --- In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles. All you do is whine. Hey, the Blue Angels are buzzing the building. I'm headed for the roof. --- All you do is run. --- No timely reply? Could it be that, as usual, you dodge the issue when you finally wake up and find yourself with your foot in your mouth? I think so. Post a schematic to prove me wrong instead of your incessant blather. -- JF |
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#66
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Sat, 24 Nov 2012 16:25:25 -0600, John Fields
wrote: On Fri, 05 Oct 2012 12:21:30 -0500, John Fields wrote: On Thu, 04 Oct 2012 13:14:50 -0700, John Larkin wrote: On Thu, 04 Oct 2012 14:40:04 -0500, John Fields wrote: On Wed, 03 Oct 2012 14:55:09 -0700, John Larkin wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin m wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. --- In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles. All you do is whine. Hey, the Blue Angels are buzzing the building. I'm headed for the roof. --- All you do is run. --- No timely reply? Could it be that, as usual, you dodge the issue when you finally wake up and find yourself with your foot in your mouth? I think so. Post a schematic to prove me wrong instead of your incessant blather. I suspect that JT never got a c-dropper circuit that works. His first two tries were duds. He's not very good once he gets off-chip. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators |
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#67
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Mon, 26 Nov 2012 14:17:17 -0800, John Larkin
wrote: On Sat, 24 Nov 2012 16:25:25 -0600, John Fields wrote: On Fri, 05 Oct 2012 12:21:30 -0500, John Fields wrote: On Thu, 04 Oct 2012 13:14:50 -0700, John Larkin wrote: On Thu, 04 Oct 2012 14:40:04 -0500, John Fields wrote: On Wed, 03 Oct 2012 14:55:09 -0700, John Larkin wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin om wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. --- In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles. All you do is whine. Hey, the Blue Angels are buzzing the building. I'm headed for the roof. --- All you do is run. --- No timely reply? Could it be that, as usual, you dodge the issue when you finally wake up and find yourself with your foot in your mouth? I think so. Post a schematic to prove me wrong instead of your incessant blather. I suspect that JT never got a c-dropper circuit that works. His first two tries were duds. He's not very good once he gets off-chip. --- Methinks if push came to shove he'd make inroads into your world which you couldn't possibly make into his. But that's really neither here nor there, since what's being discussed is, ostensibly, your gobbledygook and your niggardly refusal to take responsibility for your errors while trying to get off the hook by damning others' as being worse than yours. -- JF |
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#68
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 28 Nov 2012 16:17:10 -0600, John Fields
wrote: On Mon, 26 Nov 2012 14:17:17 -0800, John Larkin wrote: On Sat, 24 Nov 2012 16:25:25 -0600, John Fields wrote: On Fri, 05 Oct 2012 12:21:30 -0500, John Fields wrote: On Thu, 04 Oct 2012 13:14:50 -0700, John Larkin wrote: On Thu, 04 Oct 2012 14:40:04 -0500, John Fields wrote: On Wed, 03 Oct 2012 14:55:09 -0700, John Larkin wrote: On Wed, 03 Oct 2012 15:39:58 -0500, John Fields wrote: On Tue, 02 Oct 2012 11:08:51 -0700, John Larkin wrote: On Mon, 01 Oct 2012 18:03:56 -0500, John Fields wrote: On Mon, 01 Oct 2012 08:34:46 -0700, John Larkin jjlarkin@highNOTlandTHIStechnologyPART. com wrote: On 1 Oct 2012 06:00:24 GMT, Jasen Betts wrote: On 2012-09-30, John Larkin wrote: The series current-limiting cap dissipates no power, --- Not quite true, since no dielectric is lossless. --- so it can be shorted by a low voltage switch. --- It can be but, depending on when in the cycle the switch turns on, things might get grim. --- If it drives, say, the input of a bridge rectifier or a 2-diode restore thing, short the input of that. --- Still, depending on when in the cycle the switch turns on, things might get grim. Bad engineering can create grim outcomes. Better to not do that. --- It becomes a bang-bang regulator. If the controller is to be a custom IC, a modest amount of complexity is free, so some intelligent zero-crossing thing would be appropriate. But just dumb bang-bang ought to work. --- From the ridiculous to the sublime to the ridiculous! --- This is one variation: https://dl.dropbox.com/u/53724080/Ci..._regulator.jpg inrush current will destroy it. As I mentioned, and you snipped, people often include a series resistor to limit transient currents. --- And yet your circuit shows that some people - who should know better - don't. Idiot whining again. That's pretty much your skill set. --- I'm the idiot??? You claim that people often include a series resistor to limit transient currents and yet, the circuit you show - which seems to be susceptible to damage from transients - doesn't include the resistor you claim should be there. I said in plain English that a series resistor might be appropriate. In some cases, like a clean low-voltage AC source, it might not be needed. I've done lots of voltage-doubler type supplies with no series R. --- In this instance, since you identified the input as "AC LINE" and the thread is about mains driven current limited supplies, your low-voltage driven doublers are irrelevant. Also, the cleanliness of the source has very little to do with what will happen when the mains gets switched into the load at different angles. All you do is whine. Hey, the Blue Angels are buzzing the building. I'm headed for the roof. --- All you do is run. --- No timely reply? Could it be that, as usual, you dodge the issue when you finally wake up and find yourself with your foot in your mouth? I think so. Post a schematic to prove me wrong instead of your incessant blather. I suspect that JT never got a c-dropper circuit that works. His first two tries were duds. He's not very good once he gets off-chip. --- Methinks if push came to shove he'd make inroads into your world which you couldn't possibly make into his. Well, I don't design chips. But, from what I've seen of his off-chip design, I'm not very worried. But that's really neither here nor there, since what's being discussed is, ostensibly, your gobbledygook and your niggardly refusal to take responsibility for your errors while trying to get off the hook by damning others' as being worse than yours. What you call "errors" are mostly philosophical word play. I design electronics. -- John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation |
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#69
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 28 Nov 2012 15:09:30 -0800, John Larkin
wrote: On Wed, 28 Nov 2012 16:17:10 -0600, John Fields wrote: On Mon, 26 Nov 2012 14:17:17 -0800, John Larkin wrote: I suspect that JT never got a c-dropper circuit that works. His first two tries were duds. He's not very good once he gets off-chip. --- Methinks if push came to shove he'd make inroads into your world which you couldn't possibly make into his. Well, I don't design chips. But, from what I've seen of his off-chip design, I'm not very worried. --- I don't think he's interested in your turf, but, since you don't know how to design chips and he knows how to design circuits, that puts you at a loss. --- But that's really neither here nor there, since what's being discussed is, ostensibly, your gobbledygook and your niggardly refusal to take responsibility for your errors while trying to get off the hook by damning others' as being worse than yours. What you call "errors" are mostly philosophical word play. --- Hardly. I've called you to task, defined the parameters to which you refuse to respond, and asked you to explain the inconsistencies in your rhetoric, and yet you respond with silly dodges like: --- I design electronics. --- You don't, really. All you do is take what's readily available and assemble it into packages which you sell. -- JF |
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#70
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 28 Nov 2012 17:42:57 -0600, John Fields
wrote: On Wed, 28 Nov 2012 15:09:30 -0800, John Larkin wrote: On Wed, 28 Nov 2012 16:17:10 -0600, John Fields wrote: On Mon, 26 Nov 2012 14:17:17 -0800, John Larkin wrote: I suspect that JT never got a c-dropper circuit that works. His first two tries were duds. He's not very good once he gets off-chip. --- Methinks if push came to shove he'd make inroads into your world which you couldn't possibly make into his. Well, I don't design chips. But, from what I've seen of his off-chip design, I'm not very worried. --- I don't think he's interested in your turf, but, since you don't know how to design chips and he knows how to design circuits, that puts you at a loss. I'm having fun, working with interesting projects and people and making a living. I don't feel any loss. Actually, being confined to on-chip design, mostly working alone, simulating for weeks at a stretch, would bore me to death. --- But that's really neither here nor there, since what's being discussed is, ostensibly, your gobbledygook and your niggardly refusal to take responsibility for your errors while trying to get off the hook by damning others' as being worse than yours. What you call "errors" are mostly philosophical word play. --- Hardly. I've called you to task, defined the parameters to which you refuse to respond, and asked you to explain the inconsistencies in your rhetoric, and yet you respond with silly dodges like: --- I design electronics. --- You don't, really. All you do is take what's readily available and assemble it into packages which you sell. That's what electronic design is, putting parts and code together to perform functions that people want. You could trivialize all novelists that way... they just take words from dictionaries and string them together. Or musicians... they just rearrange the same old notes. -- John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation |
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#71
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 28 Nov 2012 16:06:53 -0800, John Larkin
wrote: On Wed, 28 Nov 2012 17:42:57 -0600, John Fields wrote: On Wed, 28 Nov 2012 15:09:30 -0800, John Larkin wrote: On Wed, 28 Nov 2012 16:17:10 -0600, John Fields wrote: On Mon, 26 Nov 2012 14:17:17 -0800, John Larkin wrote: I suspect that JT never got a c-dropper circuit that works. His first two tries were duds. He's not very good once he gets off-chip. --- Methinks if push came to shove he'd make inroads into your world which you couldn't possibly make into his. Well, I don't design chips. But, from what I've seen of his off-chip design, I'm not very worried. --- I don't think he's interested in your turf, but, since you don't know how to design chips and he knows how to design circuits, that puts you at a loss. I'm having fun, working with interesting projects and people and making a living. I don't feel any loss. Actually, being confined to on-chip design, mostly working alone, simulating for weeks at a stretch, would bore me to death. --- But that's really neither here nor there, since what's being discussed is, ostensibly, your gobbledygook and your niggardly refusal to take responsibility for your errors while trying to get off the hook by damning others' as being worse than yours. What you call "errors" are mostly philosophical word play. --- Hardly. I've called you to task, defined the parameters to which you refuse to respond, and asked you to explain the inconsistencies in your rhetoric, and yet you respond with silly dodges like: --- I design electronics. --- You don't, really. All you do is take what's readily available and assemble it into packages which you sell. That's what electronic design is, putting parts and code together to perform functions that people want. You could trivialize all novelists that way... they just take words from dictionaries and string them together. Or musicians... they just rearrange the same old notes. --- But when the string of words betrays the author or the string of notes engenders cacophony, we witness your defense of your spew - your being neither an author or a musician - as irrelevant. -- JF |
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#72
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 28 Nov 2012 17:42:57 -0600, John Fields
wrote: On Wed, 28 Nov 2012 15:09:30 -0800, John Larkin wrote: On Wed, 28 Nov 2012 16:17:10 -0600, John Fields wrote: On Mon, 26 Nov 2012 14:17:17 -0800, John Larkin wrote: I suspect that JT never got a c-dropper circuit that works. His first two tries were duds. He's not very good once he gets off-chip. --- Methinks if push came to shove he'd make inroads into your world which you couldn't possibly make into his. Well, I don't design chips. But, from what I've seen of his off-chip design, I'm not very worried. --- I don't think he's interested in your turf, but, since you don't know how to design chips and he knows how to design circuits, that puts you at a loss. --- But that's really neither here nor there, since what's being discussed is, ostensibly, your gobbledygook and your niggardly refusal to take responsibility for your errors while trying to get off the hook by damning others' as being worse than yours. What you call "errors" are mostly philosophical word play. --- Hardly. I've called you to task, defined the parameters to which you refuse to respond, and asked you to explain the inconsistencies in your rhetoric, and yet you respond with silly dodges like: --- I design electronics. --- You don't, really. All you do is take what's readily available and assemble it into packages which you sell. I went back to the depletion mode FET approach. The cap dropper scheme works only with +/- AC swings, not with schemes that are rectified/one-sided/no-pull-down. I do have cap dropper designs in almost all "American made" clothes washing machines ;-) The depletion mode FET, and nice swap-over when bootstrap comes up, is working perfectly and is in MASS production in China. I posted this result ages ago... like ~6 weeks back. Why is Larkin still whining about it? Avoiding put up or shut up ?:-) ...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 | | | Voice 480)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. |
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#73
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 28 Nov 2012 17:32:10 -0700, Jim Thompson
wrote: On Wed, 28 Nov 2012 17:42:57 -0600, John Fields wrote: On Wed, 28 Nov 2012 15:09:30 -0800, John Larkin wrote: On Wed, 28 Nov 2012 16:17:10 -0600, John Fields wrote: On Mon, 26 Nov 2012 14:17:17 -0800, John Larkin wrote: I suspect that JT never got a c-dropper circuit that works. His first two tries were duds. He's not very good once he gets off-chip. --- Methinks if push came to shove he'd make inroads into your world which you couldn't possibly make into his. Well, I don't design chips. But, from what I've seen of his off-chip design, I'm not very worried. --- I don't think he's interested in your turf, but, since you don't know how to design chips and he knows how to design circuits, that puts you at a loss. --- But that's really neither here nor there, since what's being discussed is, ostensibly, your gobbledygook and your niggardly refusal to take responsibility for your errors while trying to get off the hook by damning others' as being worse than yours. What you call "errors" are mostly philosophical word play. --- Hardly. I've called you to task, defined the parameters to which you refuse to respond, and asked you to explain the inconsistencies in your rhetoric, and yet you respond with silly dodges like: --- I design electronics. --- You don't, really. All you do is take what's readily available and assemble it into packages which you sell. I went back to the depletion mode FET approach. The cap dropper scheme works only with +/- AC swings, not with schemes that are rectified/one-sided/no-pull-down. I do have cap dropper designs in almost all "American made" clothes washing machines ;-) The depletion mode FET, and nice swap-over when bootstrap comes up, is working perfectly and is in MASS production in China. I posted this result ages ago... like ~6 weeks back. Why is Larkin still whining about it? Avoiding put up or shut up ?:-) ...Jim Thompson --- Indeed, but he'll always avoid either by not posting salient data proving his position viable, or by muddying the waters. He's made claims of designing cap-dropping power supplies, yet we see nothing beyond his claims. -- JF |
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#74
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Wed, 28 Nov 2012 18:51:20 -0600, John Fields
wrote: On Wed, 28 Nov 2012 17:32:10 -0700, Jim Thompson wrote: On Wed, 28 Nov 2012 17:42:57 -0600, John Fields wrote: On Wed, 28 Nov 2012 15:09:30 -0800, John Larkin wrote: On Wed, 28 Nov 2012 16:17:10 -0600, John Fields wrote: On Mon, 26 Nov 2012 14:17:17 -0800, John Larkin wrote: I suspect that JT never got a c-dropper circuit that works. His first two tries were duds. He's not very good once he gets off-chip. --- Methinks if push came to shove he'd make inroads into your world which you couldn't possibly make into his. Well, I don't design chips. But, from what I've seen of his off-chip design, I'm not very worried. --- I don't think he's interested in your turf, but, since you don't know how to design chips and he knows how to design circuits, that puts you at a loss. --- But that's really neither here nor there, since what's being discussed is, ostensibly, your gobbledygook and your niggardly refusal to take responsibility for your errors while trying to get off the hook by damning others' as being worse than yours. What you call "errors" are mostly philosophical word play. --- Hardly. I've called you to task, defined the parameters to which you refuse to respond, and asked you to explain the inconsistencies in your rhetoric, and yet you respond with silly dodges like: --- I design electronics. --- You don't, really. All you do is take what's readily available and assemble it into packages which you sell. I went back to the depletion mode FET approach. The cap dropper scheme works only with +/- AC swings, not with schemes that are rectified/one-sided/no-pull-down. I pointed that out early in the game. I do have cap dropper designs in almost all "American made" clothes washing machines ;-) The depletion mode FET, and nice swap-over when bootstrap comes up, is working perfectly and is in MASS production in China. I posted this result ages ago... like ~6 weeks back. Why is Larkin still whining about it? Avoiding put up or shut up ?:-) ...Jim Thompson --- Indeed, but he'll always avoid either by not posting salient data proving his position viable, or by muddying the waters. He's made claims of designing cap-dropping power supplies, yet we see nothing beyond his claims. I recall JT posting a depletion-fet circuit, then a triac thing, both of which had problems. Was a third circuit posted? -- John Larkin Highland Technology, Inc jlarkin at highlandtechnology dot com http://www.highlandtechnology.com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom laser drivers and controllers Photonics and fiberoptic TTL data links VME thermocouple, LVDT, synchro acquisition and simulation |
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#75
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
legg wrote: Who's on first. http://archive.org/download/otr_abbottandcostello/440606_Whos_On_First.mp3 |
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#76
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Thu, 29 Nov 2012 21:01:39 -0500, "Michael A. Terrell"
wrote: legg wrote: Who's on first. http://archive.org/download/otr_abbottandcostello/440606_Whos_On_First.mp3 One of my all time favorites! My NOT favorite: "Abbott and Costello Meet Frankenstein"... not the movie to see when you're a little kid and have to walk back thru the woods, next to the State Asylum, at night. I kid you not :-( ...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 | | | Voice 480)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. |
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#77
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
Jim Thompson wrote: On Thu, 29 Nov 2012 21:01:39 -0500, "Michael A. Terrell" ? wrote: ? ?legg wrote: ?? ?? Who's on first. ? ??http://archive.org/download/otr_abbo..._On_First.mp3? One of my all time favorites! My NOT favorite: "Abbott and Costello Meet Frankenstein"... not the movie to see when you're a little kid and have to walk back thru the woods, next to the State Asylum, at night. I kid you not :-( Then you don't want click this link. http://archive.org/download/otr_abbottandcostello/440113_VisitToASanitarium.mp3 |
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#78
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On Fri, 30 Nov 2012 14:19:31 -0500, "Michael A. Terrell"
wrote: Jim Thompson wrote: On Thu, 29 Nov 2012 21:01:39 -0500, "Michael A. Terrell" ? wrote: ? ?legg wrote: ?? ?? Who's on first. ? ??http://archive.org/download/otr_abbo..._On_First.mp3? One of my all time favorites! My NOT favorite: "Abbott and Costello Meet Frankenstein"... not the movie to see when you're a little kid and have to walk back thru the woods, next to the State Asylum, at night. I kid you not :-( Then you don't want click this link. http://archive.org/download/otr_abbottandcostello/440113_VisitToASanitarium.mp3 I can cope now, but fathom the situation when you're maybe 8 years old. (Back in the never-to-return past when it was safe to let your kids walk thru the woods to the theater... now there are Democrats out there :-) ...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 | | | Voice 480)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. |
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#79
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
Jim Thompson wrote: I can cope now, but fathom the situation when you're maybe 8 years old. You can download the movie from several sites for free. It's likely to be found on Youtube, as well. Yes, it really bothers some people, but some just laughed at those movies. No big deal on who was who. Very few ever bothered me, and that movie came out before I was born. I think I saw it on the local TV station when I was a teenager. It ran with movies like 'The Claw!!!' ;-) OTOH, I cultivated the belief in kids at a local school that I was a dangers & crazy man. They vandalized a lot of houses & stole from my neighbors but you couldn't get a one of them to walk through my yard for anything. If i stood on my front porch when school let out, the kids would walk n extra four blocks, instead of past my house. (Back in the never-to-return past when it was safe to let your kids walk thru the woods to the theater... now there are Democrats out there :-) Most are toothless & in straight jackets. The worst most can do is to drool on some poor kid! ;-) |
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#80
Posted to alt.binaries.schematics.electronic,sci.electronics.design,sci.electronics.basics
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AC Cap Dropper DC Power Supply
On 11/30/2012 8:25 PM, Jim Thompson wrote:
On Fri, 30 Nov 2012 14:19:31 -0500, "Michael A. Terrell" wrote: Jim Thompson wrote: On Thu, 29 Nov 2012 21:01:39 -0500, "Michael A. Terrell" ? wrote: ? ?legg wrote: ?? ?? Who's on first. ? ??http://archive.org/download/otr_abbo..._On_First.mp3? One of my all time favorites! My NOT favorite: "Abbott and Costello Meet Frankenstein"... not the movie to see when you're a little kid and have to walk back thru the woods, next to the State Asylum, at night. I kid you not :-( Then you don't want click this link. http://archive.org/download/otr_abbottandcostello/440113_VisitToASanitarium.mp3 I can cope now, but fathom the situation when you're maybe 8 years old. (Back in the never-to-return past when it was safe to let your kids walk thru the woods to the theater... now there are Democrats out there :-) Yes, God must really hate republicans. |
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