From: Paul
Date: Thu, 07 Sep 2000 17:49:23 +0100
Subject: Re: [TSSP] Low Q Values
Mark S. Rzeszotarski, Ph.D. wrote: > I have attached an ASCII file which looks at the contributions of > skin effect and proximity effect to the effective resistance of > a coil, Thanks for that Mark. Can I cross-check a set of numbers with you? >From the closewound data, H/D=4, with no added topload, your entry is H/D F(kHz) Rskin Rdc 4.00 224.0 43.6 39.6 My figures diverge at Rskin. I get a skin depth of 0.141 mm into a conductor radius 0.28 mm, giving a used area of 75%. So I get an Rskin of 39.6/75% = 52.8 ohms. Perhaps you could check my skin depth estimate? Regards, -- Paul Nicholson, Manchester, UK. --
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.