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46-480 Power Transformer Vibrates
EricS
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Posts: 139
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Joined: Aug 2013
City: Central PA
#18

09-17-2013, 07:09 PM
I am curious about this one, too. From my work in Class-A solid state amps, transformers hum/buzz/vibrate as the load on them increases beyond their "happy point", thus I would have recommended looking at your PS caps and resistors to ground. It would have been interesting to experiment with resistor values in the range of 20k to 50k (difference between what you have and the spec sheet).

So, what was the trick?
My Philco 40-180 Restoration Project and Basement Home Theater.
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46-480 Power Transformer Vibrates - by Pepperoni - 07-28-2013, 10:18 PM
RE: 46-480 Power Transformer Vibrates - by EricS - 09-17-2013, 07:09 PM



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