On 8-25-2010 20:36, Salmon Egg wrote:
In ,
wrote:

wrote in message
...
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


How do you make a half turn inductor?

Bill


Half a circle, as used at say 450 MHz and up (the one end is soldered to
one point on a circuit board, goes straight up say 1/4", bends over 180
degrees and the other end soldered to another pad on the PC board...just
like this "U" but flipped over (upsidedown U)...