[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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