Re: Please help with capacitor

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: robert & june heidlebaugh <rheidlebaugh-at-desertgate-dot-com> 

May I suggest you double your poly thickness.  My students have had failiers
using your thickness. We have had no failers using 12 thicknesses of 4 mill
and the same size plates in oil. That requires 4 times the number of plates
for the capacitance .
     Robert   H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Mon, 05 Jan 2004 17:08:43 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: Re: Please help with capacitor
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Mon, 5 Jan 2004 17:14:50 -0700
 >
 > Original poster: "Philip Brinkman" <peeceebee-at-mindspring-dot-com>
 >
 > I'm making a new flat plate capacitor for use with my 15,000 volt 60 ma
 > NST. I'm using aluminum foil plates 7.5"x9" (67.5 sq. in.) with 30 mil
 > polyethelyne (6 layers of 5 mil each) between each plate. Using the formula
 > C=kA/d (k=2 ) I get 3.25 sq. meters or 74 plates, does this sound right? My
 > last capacitor had only 30 plates. I'm aiming for .013 microfarads.. is
 > this right? Using different programs I get different values of capacitor to
 > use.
 >
 >