Re: 1/4 wave theory/cite the variance?

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Esondrmn-at-aol-dot-com>

In a message dated 2/16/02 7:14:58 PM Pacific Standard Time, tesla-at-pupman-dot-com
writes:


>
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <Goinbonkers-at-aol-dot-com>
>
> Ok, quick fun for all you math whizzes: 
>    
>   I am going to wind a coil with the following specs: 
>
> Coil Diam.     8.125" 
> winding length     30.0" 
> wire gauge    20 
> assumed turns per inch   29 
> Toroid   8.0" x 22.44" 
>
> what is the  "LC"  resonant freq?   what is the 1/4 lambda freq? 
> (if you wanna get picky,  a precise conversion factor for that is  F =
> 245892.764/wire length = F in kHz) 
> Mike 




Mike,

I calculate unloaded resonant frequency of 221 khz and 134 khz with topload.

Ed Sonderman