Wednesday, September 14, 2011

I need a 1000+ volt power supply.?

How do I make one for very little money, or can I take one from a tv and step it down. I am pretty much trying to accomplish making a tesla coil for a specific project I am working on. I am new to electronics and dont want to kill myself, but I am aware of some of the safety precautions, although I am unsure how high voltage changes things like arcing and what not. Any advice/help greatly appreciated.I need a 1000+ volt power supply.?
You should be able to buy a neon light transformer cheaply. These put out about 5000V, but AC not DC. Another fairly cheap possibility is an electric fence supply.



DC is tricky at high voltage, hard to find high voltage diodes or rectifiers.



High voltage can lead to arcing, but the bigger problem is getting current flow where you don't expect it. You will discover that at high voltage water films even on insulators can carry enough current to make you regret it. Also, if you arc on anything organic, you will get carbon trails which also carry current. Also, many common insulators break down at high voltage.



Tesla coils work on a different principle than transformers.



Be careful about %26quot;voltage doesn't kill, current does%26quot;. It only takes milliamps across the heart to kill. At high voltage, it is very easy to get those low currents where you least expect it.



If you are really interested in tesla coils, see http://www.eskimo.com/~billb/tesla/tesla

This site references a $5 Tesla coil. Also note the warning:

While these devices cannot cause electrocution, they can easily burn holes in your skin because they can supply several watts into a continuous electric arc. The danger is similar to that with a candle or a match. In other words, if you %26quot;zap%26quot; yourself on the high-voltage electrode, you'll end up with a tiny black-charred hole in your finger, a cloud of burning-hair scent, and a small painful burn.I need a 1000+ volt power supply.?
so? what am I supppose to do ?? huh!!??I need a 1000+ volt power supply.?
How about an outlet.I need a 1000+ volt power supply.?
hey...its not the volts that kill you....its the amperage that packs the punch!!!I need a 1000+ volt power supply.?
You did not indicate how much current you need or whether you need DC or AC.



There is a circuit in a taser that uses capacitors and diodes to increase voltage.I need a 1000+ volt power supply.?
many television flyback transformers have the high voltage diode built in. of course this will just rectify it without smoothing, so you'll end up with DC pulses unless you add a capacitor. That's where things can get dangerous.



I second JL's comment on the voltage/current that kills debate. Anyone who knows ohms law should know that the two are tied together.



If you have a supply that's too low a voltage, the current won't flow, and you're safe. If you have a supply that's intentionally current limited to a very low current it's also safe. But in general, treat any high voltage as dangerous unless you're ABSOLUTELY sure otherwise.



If you're messing with TV/monitor parts, the high voltage output should be limited enough to be non-lethal, but the filter caps in the power supply hold enough energy at a few hundred volts to be quite dangerous.



This url might be useful:

http://members.misty.com/don/hvinvert.ht



I haven't tried it, but it looks reasonable, though that's for 20kV or so.



In the 1000 range, I'd actually look for a transformer intended for building vacuum tube amplifiers. something rated for about half the voltage you're looking for should work. maybe around 500VAC I'm guessing you're not looking for 1kV exactly. Some high voltage diodes, maybe a cap (careful) and you're good to go.I need a 1000+ volt power supply.?
You can buy an ignition coil from an automotive store. The car ignition coil has a dc supply of 12volts which goes up to 6,000volts. However, the dc 12 volt supply passes through contact points so that ac can be produced for transformation to high voltage. If 12 volts dc is replaced with 12 volts ac, there is no more need for contact points in order to step up to 6,000 volts.

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