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Reply to "PW Whistle Detection Circuit"

My (first) failing this time was that I didnt build the circuit on a reusable socket board.

Also, I see why you recommended the photo-transistor version versus the triac of the relay. Pulmors dont seem to care if run DC or AC.

Next problem. This second temporary build works flawlessly with my Modern CW-80, but refuses to operate on my Type 4090.

Reversed contacts on the 4090 by making U to center and B to outside and it triggers. This now makes it trigger with "Bell" on the CW-80.

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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