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Philco 20, 70, or 90 field coil impedence?
#4

That question came up a number of yrs ago. Best I remember it was something like 37H but that was with no current flow though it. I would suspect that it going to be somewhat less. The hard part is going to find a choke a dc resistance that is close to so your voltage drop across it will be similar. There was a thread about how to rewind the old coil. On most those early K style spkrs the fc is bolted in so It's not rocket science to remove it and rewind.
ps I think you mean inductance rather that impedance.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry


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RE: Philco 20, 70, or 90 field coil impedence? - by Radioroslyn - 06-19-2017, 04:42 PM



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