In Reply to: Where from that hum?? posted by vinnie2 on September 11, 2016 at 14:13:25:
Scratching my head again. I ran my psu through psud2 and it shows virtually no ripple with the clclc filter I am using. First cap is 2uf then 8h, 47uf, 8h, 47uf. But when I measure it at the amp terminals I get 110 mV AC.
Guess I had better find out how to use the scope to see if it is 60 or 120 hz as that would help me by knowing where it is coming from for sure.
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Follow Ups
- update - vinnie2 06:06:40 09/12/16 (1)
- RE: update - FenderLover 06:22:33 09/12/16 (0)