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Re Secondary Coil Resonant Frequency?




From: 	Adam[SMTP:absmith-at-tiac-dot-net]
Sent: 	Saturday, November 01, 1997 9:15 PM
To: 	tesla list
Subject: 	Secondary Coil Resonant Frequency?


Someone asked the following question a while back, and there was no 
satisfactory answer.  The question was:  How do you calculated the 
resonant freq. of a secondary, with and without the toroid?

The TESLA-EQ.TXT has a formula, but just calculates the 1/4 wavelength 
frequency that corresponds to the length of wire used.  Does this number 
have any value to us at all?

It seems like finding the self inductance of the coil and the 
self-capacitance and using these values to calculate the frequency by 
1/(2pi*sqrt(LC)) would give the correct results, and such calculations 
could also be made to include the toroid.

But, how do you find these two values by calculation alone (before 
building the thing)??? Do you have to resort to a messy Biot-Savart 
calculation, or is there a quick approximation?

Could someone give us solved example of how it is really done??? (that's 
a challenge!) 

-Adam



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Adam Smith
absmith-at-tiac-dot-net
Epoch, Inc. Digital Music Project

www.tiac-dot-net/users/absmith/     Now with MP3!     Musik. Macht. Macintosh.
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