In Reply to: RE: Filament hum posted by vinnie2 on September 14, 2016 at 03:18:40:
Vinnie, I never did finalize a sine wave version, but I'll tackle that eventually. Meanwhile, the square wave doesn't seem to create any audible issues. If you search the forum and read up on the work that's been done in this area, I think you'll have enough to duplicate my efforts. One thing to remember about these supplies is that everything ahead of the 12V output (step down) transformer is attached in one way or another to the AC mains. If you're inclined to do a lot of experimentation, a small isolation transformer would be a great investment.
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Follow Ups
- RE: Filament hum - Triode_Kingdom 12:17:24 09/14/16 (3)
- RE: Filament hum - vinnie2 13:05:24 09/14/16 (2)
- RE: Ultrasonic Link - deafbykhorns 10:20:56 09/15/16 (1)
- RE: Ultrasonic Link - vinnie2 12:51:13 09/15/16 (0)