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A comment on Audio Optocouplers. Parent comment

Re:Audio Optocouplers by jeffbee on Saturday September 24, 2022 @08:41PM (#32967938)
You’re right that was lazy of me. But you got what I meant: transformers.
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Re:Audio Optocouplers by fuzzfactor on Saturday September 24, 2022 @10:05PM (#32968319)
Magnetic isolation more specifically, when you think about it.

So at the same time, magnetically coupled.

Naturally subject to forces including back-EMF which are not shared by optics.

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Re:Audio Optocouplers by klodolph on Saturday September 24, 2022 @10:08PM (#32968328)
just drive your optics hard enough, you'll see back-EMF

/s

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Re:Audio Optocouplers by fuzzfactor on Sunday September 25, 2022 @12:36AM (#32968977)
I've driven non-photo resistors to the point you could see the glowing in time to the music ;-)

And smell the smoke.

Now with a 1500W space heater as a dummy load on a 1000W amp, you hear a little music come out of the heating elements without any speakers.

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