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In Reply to: magnetostriction posted by fmak on January 2, 2016 at 22:00:31:
It could be from DC on the line. DC causes transformers to mechanically hum.
A vanAlstine hum dinger will solve this problem. I use one before a 60lb toroid and it eliminates what slight hum it was making.
Edits: 02/10/16
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Follow Ups
- RE: magnetostriction - jhrlrd 15:34:56 01/04/16 (1)
- RE: magnetostriction - aupiho 12:54:41 01/09/16 (0)