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RE: How much current does a -bias voltage need for 6550 tubes

If you eant to try a choke, ok, I don't see any harm and it's an interesting experiment, but I don't think it's necessary. Normally there's no current drawn, and chokes are all about opposing changes in current. You might try C-R-C-R-C. The math says that hum goes down bunches with every added -R-C stage. I'm toying with a full-wave bias supply now. Can't hear anything wrong with half-wave, but it seems cheap and wrong and a full wave conversion is dirt cheap, so what the heck.


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