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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Kindling for the Fire
I remember, when I was a kid, we had a veggy tray from an old fridge
that we used for draining the oil from the engine when we changed oil. One time we had some oil in it out in the back yard and I decided to see if it would burn, so I wadded up a sheet of newspaper and lit it, and tossed it in the pan. Well nothing much happened at first, the paper just acted as a candle wick, and kept burning. But the oil started getting hotter and finally started burning too. The flames started getting bigger, so I decided it was time to put the fire out. So I turned the water hose on the pan. WHOA-HO-HO! Big mistake! The flames shot up ten or fifteen feet! What a conflagration! The water hit the boiling oil and turned to steam, and that was like blowing air on the oil. Nice way to get scalded and burned. So I learned a lesson: never put water on burning oil. Later I learned that it doesn't work with magnesium, too. :-P So here's some kindling for the fire. http://www.rfcafe.com/references/ele...ctrocution.htm I like starting a fire here once in a while, but it usually turns into something of a totally different topic, and the bozos don't have the courtesy to change the subject line so it just keeps on burning, and burning... -- @@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@ h@e@r@e@@ ###Got a Question about ELECTRONICS? Check HERE First:### http://users.pandora.be/educypedia/e...s/databank.htm My email address is whitelisted. *All* email sent to it goes directly to the trash unless you add NOSPAM in the Subject: line with other stuff. alondra101 at hotmail.com Don't be ripped off by the big book dealers. Go to the URL that will give you a choice and save you money(up to half). http://www.everybookstore.com You'll be glad you did! Just when you thought you had all this figured out, the gov't changed it: http://physics.nist.gov/cuu/Units/binary.html @@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@ u@e@n@t@@ |
#2
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Kindling for the Fire
Watson A.Name wrote...
http://www.rfcafe.com/references/ele...ctrocution.htm "Cannot let go" at 13mA? That seems pretty low. Hand to hand, I suppose. Hmm, is that dc or ac, and if ac at what frequency? Thanks, - Win |
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Electrocution - was Kindling for the Fire
On 11 Sep 2003 02:03:19 -0700, Winfield Hill
wrote: Watson A.Name wrote... http://www.rfcafe.com/references/ele...ctrocution.htm "Cannot let go" at 13mA? That seems pretty low. Hand to hand, I suppose. Hmm, is that dc or ac, and if ac at what frequency? Thanks, - Win And what do they think the difference is between "Ventricular Fibrillation" at 90 mA and "Death" at 100 mA? Other than about 5 minutes, except under the most unusual circumstances? Possibly more accurate info at http://www.osha.gov/SLTC/etools/cons...eccurrent.html http://www.agc-ca.org/services/safety/Sb97-2.htm http://cpmcnet.columbia.edu/texts/guide/hmg13_0006.html Low voltage electrocution is most often caused by Ventricular Fibrillation, described at: http://sprojects.mmi.mcgill.ca/cardi...brillation.htm http://www.emedicine.com/emerg/topic633.htm For the description of the unusual circumstances where Ventricular Fibrillation may not be fatal: http://www.utilitysafety.com/archive...rt_a_heart.htm Unfortunately I can't now seem to find any references which describe the exact electrical mechanism by which Venticular Fibrillation (VF) occurs, although it is well understood. Deliberatly induced VF is used to temporarily stop the heart for surgery, by applying a short, low current pulse to the nerve which fires the heart (crudely put) durung the "reset" or "succeptable" part of its cycle - essentially preventing the recharge of the ion powered synapse, so that it cannot fire, and without firing, it cannot recharge. I have read that it is not actually current which is critical, but dI/dt during the reset period, and since the dI/dt on initial contact can be much greater than during the subsequent sineusoidal current, initial contact at the right polarity and timing of the heartbeat can cause death at currents much lower than those that reliably cause death (per the standard charts). Note that GFI breakers can take up to 1/10 sec to trip, and provide no protection from initial contact electrocution! Furthermore, individual succeptablilty to VF varies widely, and there are plenty of documented cases of death caused by only a few milliamps. Bottom line as I see it is that contact with line voltage is a lot like Russian Roulet with 1 bullet and a few hundred empty chambers. Why risk it? Regards, Glen |
#5
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Kindling for the Fire
Hi!
Fire, huh? Nothing teaches you respect like fire can. Well, maybe electricity, but fire produces a much better visual example...and FAIK most folks are visual learners. Two incidents come to mind that taught me a fair bit of respect for fire. The first was my (admittedly VERY stupid -- Do NOT try this at home!) spraying WD40 into a bottle I was using to hold spent matches after trying to light a grill. Just as a point of curiousity, I grabbed a can of WD40 and for no really good reason, I sprayed it into the bottle. FOOM! That made a nice little channel of fire... The second involved my conducting strange experiments on a bottled water bottle. I put a little (about a teaspoon) of white fuel into the bottle and tried to light it from a distance with an old pilot lighting stick I have for such things. It took, and I decided to put it out by stomping it flat. Bad idea. It went FOOM for a brief moment and then burned out. I've never had any injuries and I don't plan to do anything foolish enough to get any. It is a very seldom occurence that I burn anything. Every now and then I feel that setting some hopelessly beyond repair or just plain worn out equipment on fire can be quite fun, if done properly and SAFELY in an area where nothing can get out of control and a fire extinguisher is kept handy. As for the thing on lethal amounts of electricity, I just don't think I buy into it. I know an elderly electrician whose quick and dirty way to find a 110 circuit from 220 circuits (or the other way around) was to simply touch them and say "this one tingles more". I would never do that myself, but this guy isn't young and he is certainly still alive...and probably after having done this very often! William |
#6
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Kindling for the Fire
"Watson A.Name - Watt Sun" wrote in message m... on the oil. Nice way to get scalded and burned. So I learned a lesson: never put water on burning oil. True - for a better effect mix in some Turpentine followed by a generous dose of fuming Nitric Acid instead; Notes: You do not have to ignite the Oil beforehand; you will want to devise a way to pour the nitric acid from a safe distance of about 100 m for 5 liters of oil and you probably want to do this in a place where there are no flammable items and spectators around. |
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Electrocution - was Kindling for the Fire
In article ,
mentioned... On 11 Sep 2003 02:03:19 -0700, Winfield Hill wrote: Watson A.Name wrote... http://www.rfcafe.com/references/ele...ctrocution.htm [snip] Bottom line as I see it is that contact with line voltage is a lot like Russian Roulet with 1 bullet and a few hundred empty chambers. Why risk it? Well, so far I've managed to dodge the bullet, after all the times I've been shocked. Perhaps other people haven't been shocked as many times as those of us who deal with electricity/electronics, but they for the most part have dodged the bullet too. But then most of life is like that. It's only a matter of time before something you do gets you. Like driving, it's only a matter of time before someone gets into an accident. Hopefully not fatal. But then more people die in auto accidents than any other accident. So does that stop us from driving? No. Regards, Glen -- @@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@ h@e@r@e@@ ###Got a Question about ELECTRONICS? Check HERE First:### http://users.pandora.be/educypedia/e...s/databank.htm My email address is whitelisted. *All* email sent to it goes directly to the trash unless you add NOSPAM in the Subject: line with other stuff. alondra101 at hotmail.com Don't be ripped off by the big book dealers. Go to the URL that will give you a choice and save you money(up to half). http://www.everybookstore.com You'll be glad you did! Just when you thought you had all this figured out, the gov't changed it: http://physics.nist.gov/cuu/Units/binary.html @@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@ u@e@n@t@@ |
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Electrocution - was Kindling for the Fire
On Sun, 14 Sep 2003 06:33:15 -0700, Watson A.Name - "Watt Sun"
wroth: But then most of life is like that. It's only a matter of time before something you do gets you. Like driving, it's only a matter of time before someone gets into an accident. Hopefully not fatal. But then more people die in auto accidents than any other accident. So does that stop us from driving? No. Regards, Glen Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. Jim |
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Electrocution - was Kindling for the Fire
On Sun, 14 Sep 2003 14:57:17 GMT, James Meyer
wrote: On Sun, 14 Sep 2003 06:33:15 -0700, Watson A.Name - "Watt Sun" wroth: But then most of life is like that. It's only a matter of time before something you do gets you. Like driving, it's only a matter of time before someone gets into an accident. Hopefully not fatal. But then more people die in auto accidents than any other accident. So does that stop us from driving? No. Regards, Glen Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. Jim Tom was working on a TV chassis which was sitting on its side, power applied, cable attached. Tom bumped the cable, and, before Tom's magnificent dive to the Sencore isolation unit's power switch, the chassis bottom made contact with Tom's left forearm. Tom was left with dozens of burns from the various voltages present. :-) This didn't even compare, though, with the time that Tom tongue-tested a cellular telephone PS, 10.6VDC, 850 mA. OUCH!! Tom |
#10
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Electrocution - was Kindling for the Fire
In article ,
mentioned... On Sun, 14 Sep 2003 06:33:15 -0700, Watson A.Name - "Watt Sun" wroth: But then most of life is like that. It's only a matter of time before something you do gets you. Like driving, it's only a matter of time before someone gets into an accident. Hopefully not fatal. But then more people die in auto accidents than any other accident. So does that stop us from driving? No. Regards, Glen Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. In this case, I used the term accident to differentiate between that cause of death and death by natural causes, such as cancer. So you could put quotes around that term. Jim -- @@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@ h@e@r@e@@ ###Got a Question about ELECTRONICS? Check HERE First:### http://users.pandora.be/educypedia/e...s/databank.htm My email address is whitelisted. *All* email sent to it goes directly to the trash unless you add NOSPAM in the Subject: line with other stuff. alondra101 at hotmail.com Don't be ripped off by the big book dealers. Go to the URL that will give you a choice and save you money(up to half). http://www.everybookstore.com You'll be glad you did! Just when you thought you had all this figured out, the gov't changed it: http://physics.nist.gov/cuu/Units/binary.html @@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@ u@e@n@t@@ |
#11
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Electrocution - was Kindling for the Fire
In article ,
mentioned... On Sun, 14 Sep 2003 14:57:17 GMT, James Meyer wrote: On Sun, 14 Sep 2003 06:33:15 -0700, Watson A.Name - "Watt Sun" wroth: But then most of life is like that. It's only a matter of time before something you do gets you. Like driving, it's only a matter of time before someone gets into an accident. Hopefully not fatal. But then more people die in auto accidents than any other accident. So does that stop us from driving? No. Regards, Glen Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. Jim Tom was working on a TV chassis which was sitting on its side, power applied, cable attached. Tom bumped the cable, and, before Tom's magnificent dive to the Sencore isolation unit's power switch, the chassis bottom made contact with Tom's left forearm. Tom was left with dozens of burns from the various voltages present. :-) Fortunately they were only burns. This didn't even compare, though, with the time that Tom tongue-tested a cellular telephone PS, 10.6VDC, 850 mA. OUCH!! I've tongue tested (as have probably just about everyone else) a fresh 9V battery, and your battery isn't that much more. Should have given you a bit of a twinge... :-) Tom -- @@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@ h@e@r@e@@ ###Got a Question about ELECTRONICS? Check HERE First:### http://users.pandora.be/educypedia/e...s/databank.htm My email address is whitelisted. *All* email sent to it goes directly to the trash unless you add NOSPAM in the Subject: line with other stuff. alondra101 at hotmail.com Don't be ripped off by the big book dealers. Go to the URL that will give you a choice and save you money(up to half). http://www.everybookstore.com You'll be glad you did! Just when you thought you had all this figured out, the gov't changed it: http://physics.nist.gov/cuu/Units/binary.html @@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@ u@e@n@t@@ |
#12
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Kindling for the Fire
On Sun, 14 Sep 2003 08:50:33 -0700, Watson A.Name - "Watt Sun"
wroth: Since my dad painted, he had some of that stuff in a can. About the only thing that turpentine seemed useful for was for putting on a cat's rear end. They didn't like that very much. :-)) When I were a lad, I used to make chlorine gas and put a cotton ball with turpentine on it down into the green chlorine gas. It started "burning" almost instantly. One of the byproducts was hydrochloric acid. Jim "Still amazed that I survived." Meyer |
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Kindling for the Fire
The following can be fun too: Fill a vessel up with salt water. throw
in two carbon rods connected to a car battery charger. Run it a while till most of the chlorine has gone out. Power off, put on a lid, hide behind a wall, power on and run the generated gass into a SMALL baloon. Power off when 5" diameter. Use a light plastic lid that will pop off and not hurt anyone if the gas in the vessel ignites. Then hold the baloon at arms length, close your eyes and take a match to it. Do it with your hair wet, in wet smim trunks next to a swimming pool so you can jump in if you catch fire. We had great fun with this as kids. It is not unbearably loud but generates an incredible bang and you feel a heat pulse similar to what you get when you set off a large photoflash right against your skin. |
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Kindling for the Fire
On Sun, 14 Sep 2003 18:03:10 GMT, Stepan Novotill
wrote: The following can be fun too: Fill a vessel up with salt water. throw in two carbon rods connected to a car battery charger. Run it a while till most of the chlorine has gone out. Power off, put on a lid, hide behind a wall, power on and run the generated gass into a SMALL baloon. Power off when 5" diameter. Use a light plastic lid that will pop off and not hurt anyone if the gas in the vessel ignites. Then hold the baloon at arms length, close your eyes and take a match to it. Do it with your hair wet, in wet smim trunks next to a swimming pool so you can jump in if you catch fire. We had great fun with this as kids. It is not unbearably loud but generates an incredible bang and you feel a heat pulse similar to what you get when you set off a large photoflash right against your skin. I recommend wearing ear plugs. |
#15
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Kindling for the Fire
On Sun, 14 Sep 2003 08:50:33 -0700, Watson A.Name - "Watt Sun"
wrote: Since my dad painted, he had some of that stuff in a can. About the only thing that turpentine seemed useful for was for putting on a cat's rear end. They didn't like that very much. :-)) OK Watson, I give up. What effect does it have on the cat?? |
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Electrocution - was Kindling for the Fire
Watson A.Name - Watt Sun wrote:
mentioned... This didn't even compare, though, with the time that Tom tongue-tested a cellular telephone PS, 10.6VDC, 850 mA. OUCH!! I've tongue tested (as have probably just about everyone else) a fresh 9V battery, and your battery isn't that much more. Should have given you a bit of a twinge... :-) I suspect the internal resistance of the battery limits what can flow through your nice, wet tongue. I don't remember the short-circuit current of a typical 9V battery, but it seems to me the last time I tested one it was in the tens of milliamps. -- "Here, Outlook Express, run this program." "Okay, stranger." |
#17
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Kindling for the Fire
Stepan Novotill wrote:
The following can be fun too: Fill a vessel up with salt water. throw in two carbon rods connected to a car battery charger. Run it a while till most of the chlorine has gone out. Power off, put on a lid, hide behind a wall, power on and run the generated gass into a SMALL baloon. Power off when 5" diameter. Use a light plastic lid that will pop off and not hurt anyone if the gas in the vessel ignites. Then hold the baloon at arms length, close your eyes and take a match to it. Do it with your hair wet, in wet smim trunks next to a swimming pool so you can jump in if you catch fire. We had great fun with this as kids. It is not unbearably loud but generates an incredible bang and you feel a heat pulse similar to what you get when you set off a large photoflash right against your skin. I understand such a balloon may ignote if you fire a photoflash at it. Thomas |
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Electrocution - was Kindling for the Fire
In article , Clifton T. Sharp Jr. wrote:
I suspect the internal resistance of the battery limits what can flow through your nice, wet tongue. I don't remember the short-circuit current of a typical 9V battery, but it seems to me the last time I tested one it was in the tens of milliamps. Seems to me wet tongues have more resistance than fresh 9V batteries. At least alkaline ones. I can usually light up a 93 bulb with one, and that takes nearly an amp. Sometimes a 9V battery can light up an 1156 bulb, and that requires well over an amp. - Don Klipstein ) |
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Electrocution - was Kindling for the Fire
On Sun, 14 Sep 2003 13:20:30 -0500, "Clifton T. Sharp Jr."
wrote: I don't remember the short-circuit current of a typical 9V battery, but it seems to me the last time I tested one it was in the tens of milliamps. I just tested a "Energizer Max" 9V battery, brand new from the package. Short circuit current was 7.3 Amps. Note the lack of "milli." I seem to remember testing a NiCd 9V once and finding that it could produce even more short circuit current. |
#20
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Electrocution - was Kindling for the Fire
"Clifton T. Sharp Jr." wrote in message ... Watson A.Name - Watt Sun wrote: mentioned... This didn't even compare, though, with the time that Tom tongue-tested a cellular telephone PS, 10.6VDC, 850 mA. OUCH!! I've tongue tested (as have probably just about everyone else) a fresh 9V battery, and your battery isn't that much more. Should have given you a bit of a twinge... :-) I suspect the internal resistance of the battery limits what can flow through your nice, wet tongue. I don't remember the short-circuit current of a typical 9V battery, but it seems to me the last time I tested one it was in the tens of milliamps. Which brings to mind an old urban legend. The termianls on a 9V battery mate quite nicely. How long until the connected batteries explode? |
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Electrocution - was Kindling for the Fire
James Meyer wrote:
[...] Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. Jim Here's a real case for the Darwin Award. A guy high on pcp playing with 16,000 Volts. He survived! http://members.tripod.com/~StormTrooper_2/index2.htm Another poor guy with a false leg gets out of the car to take a pee. He didn't make it http://www.themercury.news.com.au/co...55E401,00.html |
#22
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Electrocution - was Kindling for the Fire
Look in ABSE for my attachment - a .gif of Carl & Jerry roasting
weenies and talking about shock current and skin resistance. I only have the one page, and it was tattered and torn. Amazing it came out as good as it did. It's frm P.E. Feb. '59. Just look for Carl & Jerry. In article , Watson A.Name - "Watt Sun" mentioned... In article , mentioned... On Sun, 14 Sep 2003 06:33:15 -0700, Watson A.Name - "Watt Sun" wroth: But then most of life is like that. It's only a matter of time before something you do gets you. Like driving, it's only a matter of time before someone gets into an accident. Hopefully not fatal. But then more people die in auto accidents than any other accident. So does that stop us from driving? No. Regards, Glen Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. In this case, I used the term accident to differentiate between that cause of death and death by natural causes, such as cancer. So you could put quotes around that term. Jim -- @@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@ h@e@r@e@@ ###Got a Question about ELECTRONICS? Check HERE First:### http://users.pandora.be/educypedia/e...s/databank.htm My email address is whitelisted. *All* email sent to it goes directly to the trash unless you add NOSPAM in the Subject: line with other stuff. alondra101 at hotmail.com Don't be ripped off by the big book dealers. Go to the URL that will give you a choice and save you money(up to half). http://www.everybookstore.com You'll be glad you did! Just when you thought you had all this figured out, the gov't changed it: http://physics.nist.gov/cuu/Units/binary.html @@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@ u@e@n@t@@ |
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Electrocution - was Kindling for the Fire
On Sun, 14 Sep 2003 09:07:51 -0700, Watson A.Name - "Watt Sun"
wrote: In article , mentioned... On Sun, 14 Sep 2003 14:57:17 GMT, James Meyer wrote: On Sun, 14 Sep 2003 06:33:15 -0700, Watson A.Name - "Watt Sun" wroth: But then most of life is like that. It's only a matter of time before something you do gets you. Like driving, it's only a matter of time before someone gets into an accident. Hopefully not fatal. But then more people die in auto accidents than any other accident. So does that stop us from driving? No. Regards, Glen Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. Jim Tom was working on a TV chassis which was sitting on its side, power applied, cable attached. Tom bumped the cable, and, before Tom's magnificent dive to the Sencore isolation unit's power switch, the chassis bottom made contact with Tom's left forearm. Tom was left with dozens of burns from the various voltages present. :-) Fortunately they were only burns. This didn't even compare, though, with the time that Tom tongue-tested a cellular telephone PS, 10.6VDC, 850 mA. OUCH!! I've tongue tested (as have probably just about everyone else) a fresh 9V battery, and your battery isn't that much more. Should have given you a bit of a twinge... :-) Oh no...this was MUCH more than a 9V battery could ever provide, believe me. I thought the top of my head was going to come off. Tom Tom |
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Electrocution - was Kindling for the Fire
On Sun, 14 Sep 2003 23:22:01 GMT, Tom MacIntyre
wrote: [snip] Tom was working on a TV chassis which was sitting on its side, power applied, cable attached. Tom bumped the cable, and, before Tom's magnificent dive to the Sencore isolation unit's power switch, the chassis bottom made contact with Tom's left forearm. Tom was left with dozens of burns from the various voltages present. :-) Fortunately they were only burns. [snip] I can remember my dad working on a TV set on the bench. Got an arc to something and jerked backwards pulling the set off of the bench and it fell to the floor. This was in the days of picture tubes strapped to the chassis. The chassis hit flat on the concrete floor, just about every tube popped out of their sockets and broke, but the picture tube didn't break ;-) ...Jim Thompson -- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice480)460-2350 | | | E-mail Address at Website Fax480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
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Electrocution - was Kindling for the Fire
On Sun, 14 Sep 2003 17:53:57 -0400, No Spam wrote:
James Meyer wrote: I had a neighbor who worked for the phone company. He told me that it is not that uncommon to find a "live" wooden telephone pole when it is raining. He was required to take a measurement on the wet wood before climbing certain poles. |
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Electrocution - was Kindling for the Fire
On Sun, 14 Sep 2003 13:34:13 -0700, "Richard Henry"
wrote: "Clifton T. Sharp Jr." wrote in message ... Watson A.Name - Watt Sun wrote: mentioned... This didn't even compare, though, with the time that Tom tongue-tested a cellular telephone PS, 10.6VDC, 850 mA. OUCH!! The power supply output would be 10.6V at 850mA, but much higher when no current is being drawn from it. This is normal, and you were probably getting more like 17 volts. OUCH! |
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Electrocution - was Kindling for the Fire
On Sun, 14 Sep 2003 17:53:57 -0400, No Spam wrote:
James Meyer wrote: [...] Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. Jim Here's a real case for the Darwin Award. A guy high on pcp playing with 16,000 Volts. He survived! http://members.tripod.com/~StormTrooper_2/index2.htm Another poor guy with a false leg gets out of the car to take a pee. He didn't make it http://www.themercury.news.com.au/co...55E401,00.html Try a google search on autoerotic electrocution for about 143 more amazing examples of applied stupidity! |
#28
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Kindling for the Fire
Much simpler: Put a little dry ice in a plastic drink bottle, like bottle
water comes in. Add an inch or so of water. Cap tightly. Run away! The 1/2 liter bottle will swell up to the size of a football before exploding with a bang reminiscent of shotgun blast...very loud. Sometimes it takes a few minutes, sometimes longer. If you don't use enough dry ice, it only swells. Don't touch it, it could still blow. Throw a rock at it first, or just leave it alone.. jak "Stepan Novotill" wrote in message ... The following can be fun too: Fill a vessel up with salt water. throw in two carbon rods connected to a car battery charger. Run it a while till most of the chlorine has gone out. Power off, put on a lid, hide behind a wall, power on and run the generated gass into a SMALL baloon. Power off when 5" diameter. Use a light plastic lid that will pop off and not hurt anyone if the gas in the vessel ignites. Then hold the baloon at arms length, close your eyes and take a match to it. Do it with your hair wet, in wet smim trunks next to a swimming pool so you can jump in if you catch fire. We had great fun with this as kids. It is not unbearably loud but generates an incredible bang and you feel a heat pulse similar to what you get when you set off a large photoflash right against your skin. |
#29
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Kindling for the Fire
"jakdedert" wrote in message ... Much simpler: Put a little dry ice in a plastic drink bottle, like bottle water comes in. Add an inch or so of water. Cap tightly. Run away! The 1/2 liter bottle will swell up to the size of a football before exploding with a bang reminiscent of shotgun blast...very loud. Sometimes it takes a few minutes, sometimes longer. If you don't use enough dry ice, it only swells. Don't touch it, it could still blow. Throw a rock at it first, or just leave it alone.. Skiers have been known to use these contraptions in 2-liter drink bottles as home-made avalanche bombs. One twist - they use urine instead of water to initiate the blast (more available on a frozen moutainside). |
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Electrocution - was Kindling for the Fire
On Mon, 15 Sep 2003 01:22:49 GMT, Stepan Novotill
wrote: On Sun, 14 Sep 2003 13:34:13 -0700, "Richard Henry" wrote: "Clifton T. Sharp Jr." wrote in message ... Watson A.Name - Watt Sun wrote: mentioned... This didn't even compare, though, with the time that Tom tongue-tested a cellular telephone PS, 10.6VDC, 850 mA. OUCH!! The power supply output would be 10.6V at 850mA, but much higher when no current is being drawn from it. This is normal, and you were probably getting more like 17 volts. OUCH! That makes sense. The current wouldn't be zero or even close, but much less than 850mA, I suppose. It was a real buzz, anyway. Tom |
#31
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Kindling for the Fire
"Richard Henry" wrote in message news:qnr9b.5237$v%5.495@fed1read02... "jakdedert" wrote in message ... Much simpler: Put a little dry ice in a plastic drink bottle, like bottle water comes in. Add an inch or so of water. Cap tightly. Run away! The 1/2 liter bottle will swell up to the size of a football before exploding with a bang reminiscent of shotgun blast...very loud. Sometimes it takes a few minutes, sometimes longer. If you don't use enough dry ice, it only swells. Don't touch it, it could still blow. Throw a rock at it first, or just leave it alone.. Skiers have been known to use these contraptions in 2-liter drink bottles as home-made avalanche bombs. One twist - they use urine instead of water to initiate the blast (more available on a frozen moutainside). I expect it's much warmer than any liquid water available there, as well. I can only imagine what a two liter bomb would sound like. Like I said, the 1/2 liter ones are amazingly loud. jak |
#32
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Kindling for the Fire
No kidding? I wouldn't have thought so, but I believe you. In any case,
Alka-Seltzer is much easier to aquire than dry ice. jak "DarkMatter" wrote in message ... On Mon, 15 Sep 2003 17:06:02 -0500, "jakdedert" Gave us: Much simpler: Put a little dry ice in a plastic drink bottle, like bottle water comes in. Add an inch or so of water. Cap tightly. Run away! The 1/2 liter bottle will swell up to the size of a football before exploding with a bang reminiscent of shotgun blast...very loud. Sometimes it takes a few minutes, sometimes longer. If you don't use enough dry ice, it only swells. Don't touch it, it could still blow. Throw a rock at it first, or just leave it alone.. Much much simpler: Heated water and Alka-Seltzer tablets. Same boom! Don't have to wait as long. |
#33
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Kindling for the Fire
OK Watson, I give up. What effect does it have on the cat??
If you haven't got a cat, then paint a little on your bum! It's a bit rougher and harsher than the finger covered in ginger up the Arab horses bum, to get it to lift it's tail for the showring! And you though it was natural to have that high tail carriage! Peter |
#34
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Kindling for the Fire
"Bushy" wrote in message ... OK Watson, I give up. What effect does it have on the cat?? If you haven't got a cat, then paint a little on your bum! It's a bit rougher and harsher than the finger covered in ginger up the Arab horses bum, to get it to lift it's tail for the showring! And you though it was natural to have that high tail carriage! Peter It happens that I have a couple of Arab horses in one of my fields at the moment, and I have bred an Arab cross thoroughbred in the past. The high tail carriage (waving the flag) is indeed natural, when excited or just for the hell of it. Regards Ian |
#35
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Kindling for the Fire
On Wed, 17 Sep 2003 17:51:55 +1000, "Bushy"
wrote: OK Watson, I give up. What effect does it have on the cat?? If you haven't got a cat, then paint a little on your bum! It's a bit rougher and harsher than the finger covered in ginger up the Arab horses bum, to get it to lift it's tail for the showring! And you though it was natural to have that high tail carriage! Peter No, No. I mean how fast dows the cat go, where does it go, and for how long? |
#36
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Kindling for the Fire
Stepan Novotill wrote:
On Wed, 17 Sep 2003 17:51:55 +1000, "Bushy" wrote: OK Watson, I give up. What effect does it have on the cat?? If you haven't got a cat, then paint a little on your bum! It's a bit rougher and harsher than the finger covered in ginger up the Arab horses bum, to get it to lift it's tail for the showring! And you though it was natural to have that high tail carriage! Peter No, No. I mean how fast dows the cat go, where does it go, and for how long? It goes as far and as fast as it can run, till it stops burning. Farmers have been known to use it on dogs that steal chicken eggs. I was told that they never come back for a second treatment. -- Michael A. Terrell Central Florida |
#37
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Kindling for the Fire
(waving the flag) is indeed natural, when excited or just for the hell
of it. Regards Ian I've taken about 30,000 pictures of Arabs at a range of show events and other locations. Although tail carriage in many of them is natural, it is often called for to "get the right shot" or "on demand for the ring". An experienced eye will tell the difference, the horse will be trying to get rid of the last little bit of that crushed ginger paste! So, it's little hole will also be puckering up as well as the tail being carried, but for a still camera, and consequent advertisement of the horse for sale or stud, it doesn't show on the shots that count. Although I won't do it myself, it is done by more than one trainer (or owner) that I have worked with. And you though they wouldn't stoop that low to get the price they want for the nag! Peter |
#38
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Kindling for the Fire
On Thu, 18 Sep 2003 04:25:21 GMT, "Michael A. Terrell"
wrote: Stepan Novotill wrote: On Wed, 17 Sep 2003 17:51:55 +1000, "Bushy" wrote: OK Watson, I give up. What effect does it have on the cat?? If you haven't got a cat, then paint a little on your bum! No, No. I mean how fast dows the cat go, where does it go, and for how long? It goes as far and as fast as it can run, till it stops burning. Farmers have been known to use it on dogs that steal chicken eggs. I was told that they never come back for a second treatment. That reminds me of a trip to the dentist in the early 80's. I had a filling filled and therefore some freezing. Normally it takes quite some time for the freezing to go away. I was in very good shape, so I ran like lightning all the way home. The increased circulation due to the exercise made the freezing go away in about 15 minutes. Normally it would take a couple of hours to wear off that much. The cat is doing the right thing by going for a run. It is a very smart animal. ....Stepan |
#39
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Electrocution - was Kindling for the Fire
Uh, Tom....you might want to invest in a DMM....just joking....I think I
tongue tested a battery or two as a kid...hehehe...yeeeeeoooooow!.....take care, Ross "Tom MacIntyre" wrote in message ... On Sun, 14 Sep 2003 14:57:17 GMT, James Meyer wrote: On Sun, 14 Sep 2003 06:33:15 -0700, Watson A.Name - "Watt Sun" wroth: But then most of life is like that. It's only a matter of time before something you do gets you. Like driving, it's only a matter of time before someone gets into an accident. Hopefully not fatal. But then more people die in auto accidents than any other accident. So does that stop us from driving? No. Regards, Glen Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. Jim Tom was working on a TV chassis which was sitting on its side, power applied, cable attached. Tom bumped the cable, and, before Tom's magnificent dive to the Sencore isolation unit's power switch, the chassis bottom made contact with Tom's left forearm. Tom was left with dozens of burns from the various voltages present. :-) This didn't even compare, though, with the time that Tom tongue-tested a cellular telephone PS, 10.6VDC, 850 mA. OUCH!! Tom |
#40
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Electrocution - was Kindling for the Fire
Uh, Tom....you might want to invest in a DMM....just joking....I think I
tongue tested a battery or two as a kid...hehehe...yeeeeeoooooow!.....take care, Ross "Tom MacIntyre" wrote in message ... On Sun, 14 Sep 2003 14:57:17 GMT, James Meyer wrote: On Sun, 14 Sep 2003 06:33:15 -0700, Watson A.Name - "Watt Sun" wroth: But then most of life is like that. It's only a matter of time before something you do gets you. Like driving, it's only a matter of time before someone gets into an accident. Hopefully not fatal. But then more people die in auto accidents than any other accident. So does that stop us from driving? No. Regards, Glen Almost all auto "accidents" are not really accidental. They usually result from "applied stupidity". I think electrical shocks are similar. Jim Tom was working on a TV chassis which was sitting on its side, power applied, cable attached. Tom bumped the cable, and, before Tom's magnificent dive to the Sencore isolation unit's power switch, the chassis bottom made contact with Tom's left forearm. Tom was left with dozens of burns from the various voltages present. :-) This didn't even compare, though, with the time that Tom tongue-tested a cellular telephone PS, 10.6VDC, 850 mA. OUCH!! Tom |
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