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NJM2072D based music outlet circuit with voice

Published on Apr 26 2011 // Automatic control circuits

NJM2072D based music outlet circuit with voice.

Circuit as shown. It is a voice-specific integrated circuit NJM2072D at the core, but the socket XS1 the pass, break into the line from the triac control circuit using negative level voice imitation of animal sounds triggered IC KD-56020.