Hi
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
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
likely the answer can be found in the pages of:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=2080&highlight=singing+toroid
http://www.diyaudio.com/forums/showthread.php?s=&threadid=2080&highlight=singing+toroid
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