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Old 11-01-2023, 06:48 AM
Alex KL-1 Alex KL-1 is offline
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Join Date: Jan 2021
Location: Brazil (Paraná)
Posts: 232
Of course, with same principles (modulated CCS for the primary opto diode) is possible to use a cheap opto for audio part.

That opto solution is more safe than rectifying half wave (with ~120V mains) and grounding the TV common directly to neutral side of mains. Who remember to check the outlet grounds, and if it fails? The chassis ground becomes hot...
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