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Re: doorknob caps

Hi Andrew,

	For a 15kV transformer, the maximum voltage would be 15000* SQRT(2) or
about 21000 volts.  I would go to 25kV just to be safe.  So you would have
to put 5 of these caps in a row to get the proper voltage.  However, that
would drop the capacitance of this string down to 1/5 or 240pF which would
be too low.  You NST would need about 5nF minumium and probably more like
12 to 15 nF.  Unless you have a very large number of these caps, they will
not work.  You shold probably look into an small MMC or even salt water
caps instead.

Cheers,

	Terry


At 10:19 AM 05/05/2000 -0400, you wrote:
>
>I have a question about doorknob caps. I am still very new to tesla
>coils and I am trying to learn as much as possible before I try to put
>one together. My question is, would some 1200 pf/5KV doorknob caps be ok
>to use on a small to medium sized coil? I am using a 15KV/30mA NST. Any
>help would be appreciated. Forgive me if this is a question best left
>for another list like the Tesla-2 mailing list, but I cannot seem to get
>on that mailing list. 
>
>Thanks,
>Andrew
>