Re: Blown Capacitor!!

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

Original poster: "Robin Copini by way of Terry Fritz <twftesla-at-uswest-dot-net>" <rcopini-at-merlin-dot-net.au>

Hi Ed,

 I have a mmc that uses the 942C, (I got it right this time!!), series cap from
CDET. My pig runs at 33Kv+/15Kva and I have yet to blow a cap. If you want to
look, try my page below.

 http://www.geocities-dot-com/rcopini/tcap.html

The beauty of these caps is that if one blows, they are easily repaired and
although the costs are consistent with a single commercial cap I know which
one I
would rather see 'let go'.

Best Regards

 Robin Copini.



Tesla list wrote:

> Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net>
>
> Hi Ed,
>
> At 04:01 PM 12/12/2000 -0500, you wrote:
> snip...
> >Roderick,
> >
> >I know how you feel.  I originally built two rolled poly caps and destroyed
> >both of them, along with a C.P. commercial cap.  It is a sad day.  Has
anyone
> >built a MMC cap for one of the larger coils running 5 to 15 kva?  Something
> >in the order of .05 ufd to .10 ufd?  This might approach the cost of a
> >commercial cap.  I now have in place a safety gap across the rotary to limit
> >how much voltage the caps ever see.
> >
> >Ed Sonderman
>
> "My" original inspiration of getting into MMC work was Chip's infamous
> "Halloween coil" explosions of 98 in which he fried two commercial caps
> while running his big coil on the roof of his house (I wonder if there are
> any pics of that??).  The giant bang noises and oil running down the
> shingles is well documented in the archives of the time.  I remember
> looking at the blown guts of the thing and thingking to myself "there are
> better ways to make a cap"...  He has since made a big MMC out of Panasonic
> caps and his coil has been running great ever since.  If Chip has his ears
> on, maybe he could tell the number of rows and strings.  I think it has
> like 350 caps in it but after blowing the $$$ commercial caps, that was a
> bargain...
>
> Cheers,
>
>         Terry