Re: Formula for calculating self resonant frequency of secondary coil or helical coil?

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

Original poster: "Mercurus2000 by way of Terry Fritz <teslalist-at-qwest-dot-net>" <mercurus2000-at-cox-dot-net>

Unfortunately I can't read Basic Code=/
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, April 29, 2003 11:32 AM
Subject: Re: Formula for calculating self resonant frequency of secondary
coil or helical coil?


 > Original poster: "Ed Phillips by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<evp-at-pacbell-dot-net>
 >
 > Tesla list wrote:
 >  >
 >  > Original poster: "Mercurus2000 by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <mercurus2000-at-cox-dot-net>
 >  >
 >  > Hello everyone, I was just curious, I know there are programs out there
 >  > that calculate the self resonant frequency of a secondary coil, like
 >  > wintesla etc. But does anyone know the actual equation the programs
use? I
 >  > would like to know so I would be able to find the frequencies without
 >  > having to use a computer and the like
 >
 > Sure.  Most just use one of Wheeler's approximations for inductance and
 > some form of Medhurst's approximation for self capacitance; simple pen
 > and pencil or calculator job.  If you or any other interested person can
 > read BASIC code I can sent you the text source file for a BASIC program
 > that does exactly that.  Equations are obvious from the listing.
 >
 > Ed
 >
 >
 >