Re: rolled caps (fwd)

---------- Forwarded message ----------
Date: Wed, 17 Dec 1997 19:57:03 +0500
From: "Alfred A. Skrocki" <alfred.skrocki-at-cybernetworking-dot-com>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: rolled caps (fwd)

On Tue, 16 Dec 1997 18:03:22 +0500 Alfred A. Skrocki
<alfred.skrocki-at-cybernetworking-dot-com> wrote;

> Hi  Kevin, there is no special equation just for "rolled" type capacitors,
> you just use the equation for a flat plate capacitor and use the 
> appropriate area, realizing that a "rolled" capacitor is simply a long two 
> plate capacitor rolled up...

Oops! I left out one thing you take the final calculated value and multiply 
it by two because in making a rolled capacitor you put the outer plate 
opposite itself thus doubling the capacitance. Sorry about that! So actually 
if one thinks about it there is a special equation for rolled capacitors,
but it is derived from the basic plate capacitor equation.


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