Quote:
Originally Posted by Sephiroth
Who knows? This sort of noise is vibration, right? Things tend come loose when they vibrate, in this case electrical things. I understand why glue is applied to the potentially noisy components, but if the electrolyte (if any) has started to leak from the capacitor.....
I wouldn't be happy.
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It's called magnetostriction. It comes from magnetising the core of the transformer. It slightly changes the dimensions and thus makes a noise.
Normally we try to run the PSU's at above 20kHz so users simply can't hear it.
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