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Smart Power Strip Whine?!

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FrizzleFried:
Has anyone else experienced a "whine" at all from their smart power power strip?  When I turn off my cab the strip starts to whine...sounds like a very very very high pitched almost inaudible "eeeeeeeeeeeeeeeeeeee..."

ChadTower:

What's in a smartstrip?  It's just one outlet connected to a relay that turns on the rest of them, isn't it?  No recitification or anything?

2600:
Plus a bunch of parts to filter out the noise and provide surge suppression.  I'd assume some of those parts either got damaged or starting to fail.

ChadTower:

I'd start thinking about caps and inductors, then.

mountain:
I would imagine it has to have a circuit in there to sense current draw as well.

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