20 Watt amplifier buzzing?
Topic: 20 Watt amplifier buzzing?
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Re: 20 Watt amplifier buzzing?
Apr 11, 2011, 08:55 pm
although there is nothing particularly magnetic-sensitive in the circuit
I think you'll find Michael Faraday would disagree! What I mean is that the transformer is creating a time-varying magnetic field which induces a voltage in any circuit loop threading that field. This is basic electromagnetism. Square transformers are usually worse than toroidal ones for creating hum this way.
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