Re: skin depth in round conductors Re: 8 kHz Tesla Coil

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>

At 07:43 AM 9/22/2005, Tesla list wrote:
> Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
>
> Hi Jim,
>
> Lets say that the skin depth is 10 mils as calculated from the flat 
> plane formula.  Are you saying the skin depth in a round conductor 
> (at the same frequency) is smaller than the 10 mils???

Yes, that's exactly what it is.. (bearing in mind that skin depth is 
a mathematical fiction to use to calculate Rac from geometry and the 
resitivity of the material)


> If so, by how much approximately??

Depends on the diameter of the conductor.  There's a table in the 
"Reference data for radio engineers" book, as well as others.

>  Also, does the current fall exponentially???

Yes, in a flat plate.