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15th July 2003, 04:40 AM
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diyAudio Member
Join Date: Jan 2003
Location: Now back in Sweden
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DC sensitivity of toroid transformers?
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 |
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