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ACOUSTIC_SOUND_TRANSMITTER

2016-04-07 02:03  
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ACOUSTIC_SOUND_TRANSMITTER
Pulsed sound is produced by this circuit. U1 is used as a bistable multivibrator, which acts as a contact debouncer for S1. C1 feeds a trigger pulse to U2, which feeds apulse to SPKR1, to piezo transducer.Values are shown for a pulse width of 110 μs.