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Phil Allison[_3_] Phil Allison[_3_] is offline
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Default Power Frequency Ripple Reduction in B+ Supplies


"Patrick Turner"

** FFS - just add 2 ohms to the 38 ohm winding.

Problem gone.

Dodgy 5U4s etc not withstanding.

SET amp loonies sure are a bunch of neurotic old women.


I'm not so sure an added 2r to a winding with 38r would fix the "problem".

** Who cares about that.


What if there is slight difference in turns of the CT winding?

** Not at all common and not mentioned in the OP.

What if there is Idc imbalance in the two output tubes?

** Huh ??

Got nothing to do with the issue of 50Hz PSU ripple.


..... Phil