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Re: Formula for self C of a Coil (not Medhurst)
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To: tesla@pupman.com
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Subject: Re: Formula for self C of a Coil (not Medhurst)
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From: "Ed Phillips" <evp@pacbell.net> (by way of Terry Fritz <twftesla@uswest.net>)
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Date: Tue, 25 Apr 2000 18:32:50 -0600
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Approved: twftesla@uswest.net
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Delivered-To: fixup-tesla@pupman.com@fixme
>
I believe the formula actual produces a value that when used with the
> > inductance of a coil correctly calculates the resonance frequency but
> it
> > is not the self C of the coil. Its just an imperical relation to
> calculate
> > Fr.
Probably correct. What is your definition of self C? Normal
engineering use is that capacitance which produces the observed
self-resonant frequency of a coil well isolated from its surroundings.
Look up original articles by Medhurst and Palermo, which are referenced
in the various editions of the "Radiotron Designer's Handbook".
Ed