Re: Capacitor construction

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

Original poster: "Nick Andrews by way of Terry Fritz <twftesla-at-qwest-dot-net>" <nicothefabulous-at-hotmail-dot-com>

I'd also submerse it in oil.  Get a layer of oil between the glass and metal 
as well.  It will up the breakdown voltage and help prevent arcing.  Just be 
sure to clean the glass and foil/sheet first.  Good luck!

Nick A, Denver USA


>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: Capacitor construction
>Date: Tue, 28 Aug 2001 08:22:39 -0600
>
>Original poster: "Gregory Hunter by way of Terry Fritz 
><twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>
>
>I've built a couple of small glass plate & foil caps,
>and they worked OK. The second one I built eventually
>failed, but it ran for many weeks before it died. An
>autopsy revealed the glass plates covered with fine,
>spider-web cracks. I don't know if this was caused by
>thermal stress or high voltage stress. If you have
>glass plates on-hand, and economy is a consideration,
>what's to debate? By all means build one. It might
>give years of good service, or it might fail the first
>time you pour the coal to it. Only one way to find
>out...
>
>Cheers,
>
>Greg
>http://hot-streamer-dot-com/greg
>ghunter31014-at-yahoo-dot-com
>--- Tesla list <tesla-at-pupman-dot-com> wrote:
> > Original poster: "Daniel Barrett by way of Terry
> > Fritz <twftesla-at-qwest-dot-net>" <dbarrett-at-clearcube-dot-com>
> >
> >     Hi all!
> >     I'm new to the list and currently building my
> > first coil. From What I have
> > seen, MMC's are the capacitor of choice, but I was
> > wondering if anyone has
> > experimented with glass plates with aluminum foil or
> > brass sheets for the
> > electrodes. Both of these are in abundant supply in
> > my shop and I'm trying to
> > save a buck :)
> > Has anyone had any luck with this? is the dielectric
> > constant of glass
> > sufficient to get a good Q in the primary?
> > TIA,
> > db
> >
><mailto:dbarrett-at-clearcube-dot-com>dbarrett-at-clearcube-dot-com
> >
> >
> >
>
>
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