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Re: [TowerTalk] Back of desk grounding buss

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Back of desk grounding buss
From: Jim Lux <jimlux@earthlink.net>
Date: Wed, 26 Mar 2014 16:24:29 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 3/26/14 2:49 PM, Mike Fahmie wrote:


The formula for calculating the inductance of a flat strip is a bit tedious to 
work by hand, I found this calculator online that seems to produce believable 
results.

http://chemandy.com/calculators/flat-wire-inductor-calculator.htm

Can anyone confirm its accuracy?


The formula cited from Terman is based on the one from E.B. Rosa and is correct. I cannot say whether they've implemented it correctly. Running a couple test cases 1x1 and 20x0.05, it looks about the right magnitude.

square wires are about 1 uH/meter, and that's a good rule of thumb number.



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