Re: Dielectric constant table

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

Original poster: robert & june heidlebaugh <rheidlebaugh-at-desertgate-dot-com> 

Terry: My commercial 60Kv pulse capacitors with 6" contacts and 1/2 Cu Yard
of size do provide more current than I can controle and do a fine job at low
or single pulse rep rate using a triggered pulse spark gap. This is fine for
use as a high voltage generator in research, My hand made oil/poly
capacitors with parallel 1" 22ga metal (12 ea) straps to carry the current
work very well up to 250 pps and take up only 2 cu ft of space and 2 1/2 gal
of mineral oil. I like this best, but tanks of oil are a mess and the oil
creaps out all the time. My MMc caps using 3 banks of .25u caps (1000v) in
series connected in parallel are only 1/2 cu ft in size and 20 lbs in
weight. This fun to use. They only have 22 ga wire leads and limited peak
pulse current capacity but are transportable small and no oil mess when used
to show the kids and neighbors in play.
    Robert   H


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Fri, 19 Sep 2003 12:31:18 -0600
 > To: tesla-at-pupman-dot-com
 > Subject: Re: Dielectric constant table
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Fri, 19 Sep 2003 20:22:19 -0600
 >
 > Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>
 >
 > Hi,
 >
 > At 10:25 AM 9/19/2003 -0600, you wrote:
 >> Terry F: I know you think you are correct, but just to keep the board
 >> correct. I use mmc capacitors and poly oil capacitors. Oil capacitors are
 >> messy and large but the deliver much more current per pulse than dose the
 >> mmc capacitors. Yes my commercial high power pulse capacitors do supply 
even
 >> higher current but 250 pounds each  in a bank of 3 is not very
 >> transportable.
 >
 > Do your commercial pulsed caps perform better than an equal value MMC
 > cap?  Commercial pulse caps will have high peak current ability and
 > slightly lower ESR, but that should be far far below what can be detected
 > in a Tesla coil's performance.  If your commercial caps actually perform
 > better, we should find out what is causing the difference.
 >
 >> So please don't say no one makes their own oil filled
 >> capacitors.
 >
 > Ok, very few people still make oil filled caps ;-))  It would be very
 > surprising if the oil filled caps are performing better...
 >
 >
 > Cheers,
 >
 > Terry
 >
 >