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Reply With Quoteare we talking about a AC-DC PS.. if so, I don't think there should be any voltage on the screws, as they are normally connected to ground together on teh computer PS case...
I was finishing up my plexicase for my new in-car computer last night, and I mouted the power supply on the lid with metal screws not thinking that there would be any problem. Then, while lifting the lid, two fingers hit two screws and ZAP! I was doing my July 4th imitation. I measured 50VAC going between those two screws. Not good.
Helpful tip for everyone out there. Use plastic screws when mounting your power supply.
are we talking about a AC-DC PS.. if so, I don't think there should be any voltage on the screws, as they are normally connected to ground together on teh computer PS case...
I think one of the nuts was touching one of the the traces. The power supply was built for emachines, so it's only 3.5" x 3.5". I was surprised at the voltage reading too, but that's the only way I can explain it. But it's definately a good idea to use nylon screws instead of metal when mounting an unenclosed power supply.
Yeah I learn't that the hard way, had a few 240v zaps in mytime, and a nasty belt off a coil. Although I've yet to learn and I still use steal screws, oh well stupid is as stupid does, I suppose.
Rob
And you say people actually pay money for M$ Windows?
www.mp3mini.co.uk (Does what it says on the URL) www.openclassic.co.uk (The new car, with zero rust!) www.rob-web.co.uk (My other site)
Total re-design underway: on the whole progress is very slow as the car is taking up too much time :)
all part of the fun.. u aint a true tech-head until you've had that feelin of 150V/240V thru ya body
Project - GAME OVER :(
Just got to ask, does 6v @ 60A count?
Yes we measured 60A on this after i zapped my self, we needed one huge ammetre to measure it too. That explaines the crimp terminal imprint burnt into my hand. :/
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You must have some low skin resistance hornet. Even at 240V only 20-40mA will pass trough the body in your average electric shock (It's still plenty enough to kill in quite a few cases). So even if the 6V source was capable of producing 60A only a tiny current would actually pass shrough your body if you came into contact with it. Unless perhaps you just got out of the shower
So it seems even ohms law applies to us humans. The moral of the story is to get yourself tested with a megga regularly.
I regularily take 500,000V off my Tesla Coil...
Player: Pentium 166MMX, Amptron 598LMR MB w/onboard Sound, Video, LAN, 10.2 Gig Fujitsu Laptop HD, Arise 865 DC-DC Converter, Lexan Case, Custom Software w/Voice Interface, MS Access Based Playlists
Car: 1986 Mazda RX-7 Turbo (highly modded), 1978 RX-7 Beater (Dead, parting out), 2001 Honda Insight
"If one more body-kitted, cut-spring-lowered, farty-exhausted Civic revs on me at an intersection, I swear I'm going to get out of my car and cram their ridiculous double-decker aluminium wing firmly up their rump."
I was working on a Vacuum tube Oscilloscope ...back in '82 and accidently brushed against 600vac...scared the bagesus out of me!
You can have a lot of fun (at someone elses expense) if you chuck a 9v battery in a toilet (make sure it's a metal one) and don't use the toilet afterwards
Rob
And you say people actually pay money for M$ Windows?
www.mp3mini.co.uk (Does what it says on the URL) www.openclassic.co.uk (The new car, with zero rust!) www.rob-web.co.uk (My other site)
Total re-design underway: on the whole progress is very slow as the car is taking up too much time :)
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