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flat plate capacitor formulas

To: tesla-at-pupman-dot-com
Subject: flat plate capacitor formulas
From: "Tesla list" <tesla-at-pupman-dot-com>
Date: Sat, 10 Jan 2004 19:33:23 -0700
Resent-Date: Sat, 10 Jan 2004 19:47:12 -0700
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Original poster: "Philip Brinkman" <peeceebee-at-mindspring-dot-com> 

I have read up on cap. formulas and think these are the formulas, does
anyone know if these are right?
1) basic formula : C = eA/d   e= dialectric constant (2.2 for poly sheet) C
= Farads, A = square meters, d=distance between plates in meters. 2) Inches
conversion : C(picofarad) = .224eA/d  If both sides of the plate are used
in a sandwich of several plates C is doubled.

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