Re: capacitors

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

Original poster: "S & J Young by way of Terry Fritz <twftesla-at-qwest-dot-net>" <youngs-at-konnections-dot-net>

Sean & prospective cap buyers,

As you are a Geek Grouper,  I know you wouldn't want to overcharge people
for your caps.  The going rate for brand new surplus MO caps is 40 cents to
$1.50 from USA Manufacturing Surplus.
See

http://ww2.usamfg-dot-net/cgi-bin/onramp.exe?custnum=&password=&pgm=alpha.bbx&al
pha=capmicro

It's all one URL - you may have to copy & paste it into your browser

MO caps generally are no good for RF use - they will overheat and explode.
I think most have mylar dielectric which is lousy at RF.   But they are fine
for level shifters (original use in a MO) and DC filter caps at 50 or 60 Hz.
--Steve

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, January 29, 2002 7:21 PM
Subject: capacitors


> Original poster: "Sean Taylor by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<taylorss-at-rose-hulman.edu>
>
> Hi everyone - does anyone know if microwave oven capacitors (polypropylene
> dielectric) work well for TCs if in series for higher voltage? The reason
I ask
> is I have about 100 of them, they are split into 2 section, one at 0.86
uF, one
> at 0.34 uF, with a common center.  They are rated at 2100 V and then say
50/60
> Hz after that, so I'm assuming that thats an AC rating . . .  I would be
> willing to sell some for $5 each, if anyone would be interested.  If they
> aren't good for tank use, maybe for voltage doubler/level shifter
circuits?
> First people to email me OFF list will get the caps . . .
>
> Also, I have 12 .05 uF pulse caps rated at 10 KVDC each.  Will these work
in a
> TC tank circuit, even at low duty cycle - maybe a few (20) seconds on at a
> time? Thanks!
>
> ---------------
> Sean Taylor
> The Geek Group
> G-1 #1204
> <http://www.thegeekgroup-dot-org>www.thegeekgroup-dot-org
> Because the Geek shall inherit the Earth!
>
>
>
>
>
>