Re: Microwave Oven Caps

[Terry Fritz <twftesla-at-uswest-dot-net>]

Hi Tom,

	I don't really know right off...  Normally we want the nice low
dissipation poly caps but ten microwave caps are pretty big and could
dissipate a lot of heat on a small coil...  I guess I would be reasonably
worried with a 1.3KVA coil.  If they are free or low cost there would not
be harm in trying.

You say you will us a lower value lower voltage cap to go from 90nF to
33nF.  I don't think that works??  If you series a 90 nF and 52nF to get
33nF and put 10kV across them, 7300 volts will be across the 52nF cap.
Perhaps I don't see what you mean there...  Your transformers may be able
to charge the 90nF cap as is.  The resonant value of 30nF can be pushed
much higher...

Cheers,

	Terry


At 10:44 AM 7/15/00 -0700, you wrote:
>I was just wondering if i could use microwave oven
>caps in series as my tank cap.  Would this work, or
>would the caps just fail.  10 of these caps would be
>about .09uf at 21kv ac.  I will then use a lower
>voltage, lower value cap to drop the total capacitance
>to the .03uf i need.  I plan to use a 10kv 133ma bank
>of OBIC's to feed the tank.
>Thanks for any help you can give. 
>--Tom
>
>
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