Re: Vintage 10,000 volt DC 1ma supply for sale.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "John Richardson by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jprich-at-up-dot-net>


Hello,
To those of you who were at the Cheesehead Teslathon, you may remember how
long it took to charge Sam Barros' cap bank for the rail gun, and if I
remember correctly, that was with a 15/30 ma NST.  seems it was on the order
of fifteen minutes or so.  Just for perspective.
John Richardson
 >
 > In a message dated 2/21/03 9:12:04 PM Pacific Standard Time,
 > tesla-at-pupman-dot-com writes:
 > >However I don't
 > >think (I could be wrong, and frequently am) but I don't think that you
 > >could crush coins with it. There isn't enough amperage to maintain the
 > >charge in the cap/charge it fast enough to make it work.
 > >
 > >
 > >
 > >Christopher "Duck" Boden Geek#1
 >
 >
 >
 > Duck, Captain, all,
 >
 > Sure, you could charge a quarter shrinker cap with a 10 kv, 1 mA power
 > supply, but that would depend on how long that you want to spend
 > charging up the huge capacitor for the one-time discharge pulse to
 > shrink the quarter, crush the can, ect. I figure that at only 10 vA per
 > second it would take 1000 seconds (nearly 17 minutes) to fully charge
 > a 10 kJ capacitor, in the best case scenario. I know that it's not quite
 > as simple as just that and that it would likely take even longer.
 > And if the cap tended to leak off a little of its charge, you may never
 > be able to fully charge it.
 >
 > Sparkn' in Memphis,
 > David Rieben
 >
 >