[Prev][Next][Index][Thread]
Inductance of a multilayer coil
----------
From: Hollmike [SMTP:Hollmike-at-aol-dot-com]
Sent: Friday, April 03, 1998 10:07 PM
To: tesla-at-pupman-dot-com
Subject: Re: Inductance of a multilayer coil
Erik,
I have one reference that give this as :
L = 0.8 * a^2 * n^2 uH
6*a + 9*b + 10*c
where
a = average radius of windings
b = length of the coil
c = difference between the outer and inner radii of the coil.
all dimensions in inches.
It states that it is accurate to 1% when the terms in the denominator are
about equal. This is also an equation by Wheeler. It applies as long as the
coil has a rectangular cross section.
Hope this helps,
Mike Hollingsworth