* Originally By: Kukkonen-at-snakemail.hut.fi
 * Originally To: Richard Quick
 * Originally Re: RE: CAP DESIGN
 * Original Area: UUCPE-Mail
 * Forwarded by : Blue Wave v2.12

Date: Wed, 4 Jan 1995 19:33:00 +0200 (EET)
From: Kristian Tapani Ukkonen <kukkonen-at-snakemail.hut.fi>
To: Richard Quick <richard.quick-at-slug.st-louis.mo.us>

On Sat, 31 Dec 1994, Richard Quick wrote:

> Yes this will work. But you are better off building a flat plate 
> capacitor construction with this thinner material. Use maybe two
> thicknesses of plastic between sheets of AL foil. Build up stacks
> of very large capacitance (like .15 uF) and wire a bunch of the 
> stacks in series to get around .015 at 15kVAC pulse.

I just made a calculation about the cap - do these specs sound reasonable 
to you? :
..using about 30m^2 of .2 mm (.0078") thick ld-PE sheet I'll make 4 caps
that will be connected in series, each 69nF. These individual caps will
have 3 layers of ld-PE between each cap-plate (Al-foil, 35um, 30cm*20cm)
and using 40 plates I should get about 69 nF.. Alltogether I should get
17nF at 43kVDC using the voltage-rating of 18kV/mm and thus about 14kVAC
for tesla-use..
The unit size will be about 36cm(h)*30cm*12cm minimum + oil-immersion tank..

Thanks for your advice in advance!


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