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Re: Tube coil capacitors
Terry,
Your testimony is encouraging. I really like the idea of combining many
small
value caps to produce just about any value desired. Let's make sure we're
talking about the same thing. These caps are found in Digikey's online
catalog
at http://info.digikey-dot-com/EC/V3/324.pdf (Don't have their current paper
catalog) and are called "High voltage Metallized Polypropylene Film
Capacitors"--ECWH(V). The 1600 Vdc, .0056 uF caps sell for $69.75 for a
hundred.
Are we on the same page?
Dave
Tesla List wrote:
> Original Poster: Terry Fritz <twf-at-verinet-dot-com>
>
> At 05:10 PM 2/17/99 -0500, you wrote:
> snip........
>
> > I've considered one option: Digikey has Panasonic polypropylene caps
> >rated at .0056 uf, 1600 vdc. They're fairly inexpensive, so multiple units
> >could be purchased and series/parallel combined to produce just about any
> >value needed. The ability to vary capacitance is of obvious value. Also, I
> >wonder if the use of polyprop units will result in a higher circuit Q over
> >that which would be effected by using Mica caps? snip....
>
> Other things have pulled me away from my many caps primary cap project but
> I wanted to say that those Panasonic poly caps have performed with
> excellence for me! They run cold and have very high margin. I think
> mixing them together to get a desired value will provide a very good and
> reliable device! The 630 volt ones I use break at around 2400 volts. When
> I take them apart (I am a failure analysis engineer), their internal
> construction is very good. I would not hesitate using them for any TC use.
>
> Terry