[Elecraft] Current Flow on Copper Strips - a Question

John Huggins, kx4o kx4o at hamradio.me
Fri Apr 27 10:33:22 EDT 2018


What's more appropriate for coaxial building entry grounding management?

This wide-strap, allegedly low inductance, approach...

  https://www.comm-omni.com/polyweb/images/pb.jpg

...or this more R56 approach...

  http://www.radio2way.net/MGB.jpg

?

73
John, kx4o

On Fri, April 27, 2018 02:21, Wes Stewart wrote:
> "When skin effect is present, the current is always redistributed over
> the conductor cross section in such a way as to make most of the current
> flow where it is encircled by the smallest number of flux lines.  This
> general principle controls the distribution of current irrespective of the
> shape of the conductor involved. Thus, with a flat strip conductor (figure
> reference not shown) the current flows primarily along the edges, where it
> is surrounded by the smallest amount of flux, and the true or effective
> resistance will be high because most of the strip carries very little
> current.  (A reference to the missing figure) makes clear that it is not
> the amount of conductor surface that determines the resistance to
> alternating current but rather the way in which the conductor material is
> arranged."
>
>




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