Re: Improving Selectivity In Vintage Receivers
I just pulled a mains transformer out of the junk box and did measurements on the tapped primary;
0-245V L=2.94H (100kHz)
0-225V L=2.46H
225-245 L =5mH
At 100Hz, the readings are slightly higher but the issue is still the same.
Resistance values
0-245V...........R=90R
0-225................81R
225-245............ 8.8R.
B
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