Hi Alex,
Here goes: L(uh) = .008s((ln(1.414s/2d)+.38) Where s = the length of a side
in cm; d = diameter of conductor in cm; ln = natural logarithm
This is for a single turn square loop. With the final (insignificant) term
removed, that isn't so hairy after all!
Bill A
-----Original Message-----
From: Alexander S. Yurkov [mailto:[email protected]]
Sent: Saturday, March 30, 2002 10:42 AM
To: Ashlock,William
Subject: loop inductance
Hi, Bill.
On Fri, 29 Mar 2002, Ashlock,William wrote:
I use the formulas for inductance found in the loop section all late
editions of the ARRL Antenna Books (too hairy to show here; the formula
<G>), and it IS in cm. The accuracy is fairly close to my measured values.
For example, I calculate 109uh for a #12 (2mm) square loop having 50'x 50'
dimensions. The third term in the formulas will turn out to be
insignificant
for loops this big.
Unfortunely I have not such a book. Would you sent me this formula?
73 de RA9MB/Alex
http://www.qsl.net/ra9mb
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