Re: eddy current with secondary coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net> 

Malcolm,

If you choose a wire guage that allows 6 skin depths, I think you would not
be able to put the 1400 turns onto a former with an aspect ratio of about
4.5:1 (at least with an 8 inch coil - that I'm building).  Could you comment
on this.

Gerry R
Ft Collins, CO

 > Here's a simple rule that's worked well for me:
 >
 > Given that you know the *lowest* frequency that your coil is going to
 > operate at, for a closewind, make the wire diameter = 6 skin depths.
 > For a spacewind halve the wire diameter so you now have the same
 > number of turns and turns per inch but a spacing between the turns =
 > 1 wire diameter.
 >
 > Malcolm
 >
 >