Hey OT:

I stand by my proximity effect.

The Q is equal to Rl/Xc the half turn has twice as much Xc so the Q
for that turn is half as much as the other turns because of proximity
Thus the Pd in the half turn is 4 times the Pd in the other turns.

73 OT
de n8zu



On Aug 25, 12:09*pm, "amdx" wrote:
Several years ago while making inductors for tuning a class E amplifier we
end up with a 4-1/2 turn inductor. The inductor used a 3F3 potcore, gapped I
think,
but it has been awhile. The inductor was driven hard but below saturation..
The problem; the 1/2 turn got HOT. *Four turns or five turns were ok.
*My physicist friend had an EE verify the problem 2000 miles away.

So, can anyone tell me why 1/2 turn would make such a difference in the
heating?

* * * * * * * * * * * * * * * * Thanks, MikeK