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[AMPS] Finding the Q of a Coil

To: <amps@contesting.com>
Subject: [AMPS] Finding the Q of a Coil
From: 2@vc.net (2)
Date: Sun, 7 Oct 2001 11:10:11 -0700
>
>At 08:43 PM 10/6/2001 -0700, Bill Smith wrote:
>
>>Q of this coil should be the Inductive Reactance
>>divided by the internal resistance of the coil's wire
>>(factoring in the RF).  This is where I got bogged
>>down.  Couldn't come up with an appropiate number.
>>Where am I going wrong?
>
>Accurate calculation of RF resistance definitely is the tough part.  There 
>is more than one set of formulas from different sources for calculating 
>this and the results don't agree. If I were forced to choose, I'd probably 
>stick with the formulae in Terman's books.   
> ...
Amen, Phil.  Better yet borrow a Q-meter.  Simpler still, run full suds, 
shut down, and apply the thumb test.

cheers

-  R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures.  
end


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