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In Reply to: I'll rephrase the question ('hum bucking' coil) posted by mikeyb on April 21, 2007 at 06:50:11:
Based on the schematic, it appears that the hum-bucking connection allows resonating the first section of the choke at the ripple frequency. It would then act as a tuned trap to ground. I don't konw why it wasn't commercially successful, but it does look as though it might be more expensive to produce than standard chokes. It would also probably be limited to a rather narrow range of current draw. Current draw changes inductance, so there's a finite window over which the LC would be resonant at 120 Hz. This would obviously also rule out the possibility of manufacturing a swinging choke in this configuration, and those were very popular back then for many applications.
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- Hum bucking - Triode_Kingdom 10:24:31 04/21/07 (0)
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