Re: Extra Toroid & MMC Caps

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


I'm buying them in quantities of 1,000 and 1,500 pcs.  We use a lot of them
for our 300 kV Bridge-of-Fire power supplies.

We use Erms * 3 and they hold up well under these conditions.  We keep total
sparkgap (sum of 3 typically) to around 0.240 inches (240 mils) or less.

Dr. Resonance

 >
 > I was wondering why those were so much less expensive than the CDE caps:
 > http://cornell-dubilier-dot-com/film/9422000.htm
 >
 > The CDE caps have three times the dV/dt and Ip, and about 50% more Irms.
I
 > guess I would expect these caps, based on specs alone, to perform very
 > well, but not be as robust and tolerant of "oopsies".
 >
 > We do plan to start offering caps, and hopefully even some magnet wire,
 > variacs, and possibly NSTs and MOTs.  I'm not sure we could estimate a
 > timeframe, but I would think by spring at the latest.  Until then, these
 > look like a good deal!
 >
 > Mark Broker
 > Chief Engineer, The Geek Group
 >
 >
 >
 > On Sun, 03 Oct 2004 12:47:05 -0600, Tesla list <tesla-at-pupman-dot-com> wrote:
 >
 > >Original poster: "Harold Weiss" <hweiss-at-new.rr-dot-com>
 > >
 > >Hi All,
 > >
 > >I just picked up mine from Dr. R, and those STK capacitors are about 1/2
the
 > >size of the CDE (Geek) ones.  They look to be the same construction as
the
 > >CDE, only smaller.
 > >
 > >MP89 .15 uF 2000VDC 630VAC
 > >Typ ESR 7 mO
 > >Typ ESL 29 nH
 > >dV/dt 960
 > >Ip 144A
 > >Irms 8.9A
 >
 >
 >
 >