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Audio and Video Talk
General Discussion
Turntable cartridge hour meter, any ideas?
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<blockquote data-quote="marantz123" data-source="post: 1134917" data-attributes="member: 16849"><p>Hmmm. You could build a sound-to-light trigger (a simple triac cct with sensitivity set appropriately) with the source from any non-critical point in the signal path. Use that light signal to trigger an optocoupler which in turn could feed/trigger a digital timer/counter. Keeping that timer powered indefinitely may be a challenge...consider a solar charged battery option to support that.</p></blockquote><p></p>
[QUOTE="marantz123, post: 1134917, member: 16849"] Hmmm. You could build a sound-to-light trigger (a simple triac cct with sensitivity set appropriately) with the source from any non-critical point in the signal path. Use that light signal to trigger an optocoupler which in turn could feed/trigger a digital timer/counter. Keeping that timer powered indefinitely may be a challenge...consider a solar charged battery option to support that. [/QUOTE]
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Audio and Video Talk
General Discussion
Turntable cartridge hour meter, any ideas?
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