[Amps] Skin depth: silver plating of tank circuit coil feasible with
Steve Thompson
g8gsq at f2s.com
Tue Oct 5 00:18:37 PDT 2010
Yes and no appears to be the answer - rf current doesn't take the
lowest possible resistance path, it crowds on the outside surface
of a conductor. Once there it appears to look for the lowest
resistance path.
Steve
TexasRF at aol.com wrote:
>
> Are you saying that current takes the path of least resistance? What a
> great concept!
>
> That sure explains why insulation on a conductor works.
>
> 73,
> Gerald K5GW
>
>
> In a message dated 10/4/2010 3:51:01 P.M. Central Daylight Time,
> g8gsq at f2s.com writes:
>
> I recall an article in RF Design magazine which suggested that the
> rf current moves away from high resistivity, I think there was
> some maths supporting the analysis. If the outer surface of a
> (e.g. copper) conductor oxidises, the article predicted that the
> current just moves deeper into the pure metal so the difference in
> performance is much less than might be expected.
>
> Steve
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