DC sensitivity of toroid transformers? - diyAudio
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Old 15th July 2003, 04:40 AM   #1
diyAudio Member
Join Date: Jan 2003
Location: Sweden
Default DC sensitivity of toroid transformers?


As some of you may know there are sometimes a risk to get a lot of mechanical hum from toroid transformers due to a DC component on the mains voltage.

I have read somwhere that Jeff Rowland in his amplifiers use a circuit consisting of diodes and capacitors between mains and transformer in order to remove the DC component.

Has anyone any information on how this circuit look like? I can imagine that you can build it using 2 Zener diode connected in series but I wonder if anyone have any idea how it is done in Jeff Rowland amplifiers?

Regards Hans
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Old 15th July 2003, 06:29 AM   #2
diyAudio Member
Join Date: Dec 2001
Location: SIUE, Illinois, USA
likely the answer can be found in the pages of:
dc filter
if only it could be used for good, not evil...
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