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From: firstname.lastname@example.org (N. Thornton)
Subject: Re: Capacitor Array
Date: 14 Nov 2002 16:56:58 -0800
NNTP-Posting-Date: 15 Nov 2002 00:56:58 GMT
"Owen Lawrence" wrote in message news:<email@example.com>...
> N. Thornton wrote in message ...
> >Thorfirstname.lastname@example.org (P!erCer) wrote in message
> >> Hi,
> >> For no real reason I've been collecting flash capacitors from
> >> disposable cameras. Now I'm thinking of taking a couple hundred and
> >> building a big parallel capacitor bank, that would be able to supply
> >> VERY high currents very quickly...what cool stuff can I do with that?
> >> The best I have seen is some guy who did the same thing and built a
> >> gauss gun. Any ideas?
> >You can make metal boxes. Discharge thru a heavy coil very fast. Sheet
> >metal sits on a solid former, the magnetic pulse slams it down onto
> >the mould. Very fast, very loud.
> >Or a coin shrinker. Or I suppose an instant steriliser: discharge that
> >lot in one go across a pair of large carbon rods and I expect you'd
> >have a 0.001 second steriliser.
> Sounds like fun. But just how many capacitors would you need to make a
> metal former? Assume the metal is thicker than tin-foil so it at least
> holds its shape when you pick it up.
It will do serious metal, not just foil. If you look up coin shrinker
or quarter shrinker, you should find a coin shrinking fanatic: much
the same thing will form metal objets. But beware of the dangers: its
IIRC he was discharging 12kV through I think a 3 turn copper coil. The
coil exploded each time. I forget te series R, but somewhere in the 1
ohm region I think.
> Or to put it another way, say you've
> got two hundred photoflash capacitors, how big a coil can they drive to get
> reasonably thick metal to bend this way?
I would imagine that would work well enough. Just try to live ;)
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