FW: capacitors

From: 	DR.RESONANCE[SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: 	Monday, July 28, 1997 9:10 PM
To: 	Tesla List
Subject: 	Re: capacitors

To: Kevin

We have a whole box of those big TV caps usually rated at 500 or 1000 pf. 
They are designed for DC filter work in a TV and don't work very well for
Tesla coil work.

We have some other .004 MFD (4000 pF) units rated 30 KV that don't work
perfect but they do work for small coils running 60 ma or less on the drive
xmfr.  Will part with as many as you need for about $15 per cap.


> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
> Subject: Re: capacitors
> Date: Sunday,July 27,1997 11:16 PM
> From: 	FutureT-at-aol-dot-com[SMTP:FutureT-at-aol-dot-com]
> Sent: 	Sunday, July 27, 1997 9:00 AM
> To: 	tesla-at-pupman-dot-com
> Subject: 	Re: capacitors
> In a message dated 97-07-27 10:59:59 EDT, you write:
> << 
> > Well, I know HV caps are not cheap, but is it worth it to try and make
> >my own out of bottles, oil, saline, etc.?  What is the reliability of
> > these and how do I measure what their max voltage and capacitance is?
> > I went to the electronics store today, and a guy there told me about HV
> > caps in black and white tvs from the 50's.  He said they're around
> > 20-30KV.  Would it be possible to find those in a tv of a more recent
> > year?
>   >>
> Kevin,
> IMO, all those bottles, salt, tubs, etc are too much trouble.  I'd
> making the type of cap that Bert H. suggested, using cheap 8mil (?) 
> poly, aluminum foil, and cheap mineral oil. 
> Those TV caps were low capacitance values, I think.  New TVs have 
> almost nothing in them at all anymore to save costs.  If they have
> hamfests where you live, that's the best bet; you'll find something
> eventually.
> John Freau