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Original poster: "Mike Kiser by way of Terry Fritz <twftesla-at-qwest-dot-net>" <cli-at-bluemarble-dot-net>
This is slightly off topic, but about a week ago I tried to post on a similar
topic. I never did see it on the list so I thought I'd try responding to this
I have a 4.25" X 25" coil driven by 2 10KV 23mA OBITS (60 Hz) in parallel for
46mA. The cap is an MMC array consisting of 6 strings of 23 caps each that
out to .012 mfd and 27KV. According to my calculations (possible errors?) this
is resonant with the OBITS. After burning out 3 OBITS, I am wondering if
in LTR mode would be a good idea. I can get .018 mfd and 18KV by removing 4
from each string and using most of them to make a 7th string. Does anybody out
there see disaster lurking in this idea? I'm not an experienced coiler and
appreciate any help from those who are.
Tesla list wrote:
> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
> Hi Max,
> Are you sure you need 40kV!! MMCs do not have to be made to take higher
> voltages like old homemade caps were. Noramlly 20kV would be just fine and
> cost 1/4 as much which would hit your cost target. What is you peak or 1.4
> x RMS voltage? that is the voltage you should rate an MMC too. Any higher
> and your wasting money. See also:
> At 04:01 PM 5/25/2001 +0000, you wrote:
> >>Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> >>I need a really good deal on MMC! I am trying to build a .1 40kv cap for
> >>under $150.
> >>-Max Joseph
> >That's one MONSTER cap! Are you sure you didn't mean .01uF, 40kV?
> >The Geek Group can accommodate you, but not for that price. Using our
> >smaller cap, 2kV, .1uF, you'd need a 20x20 array. That's 400 caps at $1.80
> >each for a total of $720. Using our larger cap, you'd need a 20x15 array,
> >or 300 caps at $2.25 each for a total of $675.
> >Our caps are tough little buggers, and so, do not need to be so
> >overdesigned. Our MMC designed for use with 12kV NSTs is rated for only
> >18kV max. We've punished it for over a a couple hours of runtime with no
> >Mark Broker (using Chris' email account)
> >G-5 Geek #10
> >Get your FREE download of MSN Explorer at http://explorer.msn-dot-com