Re: capacitance formula

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

Original poster: "June Heidlebaugh by way of Terry Fritz <teslalist-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>

NO: That is not correct. I can not give you an answer that is definite. The
value is somewhere between the max capacitance of the dielectric of a given
spacing and the min capacitance of the other dielectric of the same distance
of separation.I have the same problem with PE sheets and oil capacitors. so
I say use the limits and measure the results. In my case the difference is
not very great. If I was using something like paper and oil the difference
would much greater, but the results would still have to be measured to know.
Robert  H
----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, June 03, 2003 7:55 PM
Subject: capacitance formula


 > Original poster: "Peter Lawrence by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <Peter.Lawrence-at-Sun.COM>
 >
 >
 > I've been wondering what the capacitance between two conductive plates
 > separated by some distance that is filled with both a sheet of plastic
 > and some oil, where the plastic and oil have different dialectric
 > constants, and the thickness of each is different.
 >
 > I've come to the conclusion that it will be the same as if it were two
 > capacitors in series, one purely the plastic, the other purely the oil,
 > each with their own individual thicknesses. Then use the series
capacitance
 > formula C = 1/ (1/c1 + 1/c2).
 >
 > Is this correct?
 >
 > -Pete Lawrence.
 >
 >