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Panic Alarm

Panic Alarm

23746-+IC135IC312478628367154IC2+R1MONO PLUGSHORTEDLEADSMONOJACKSOCKETSPEAKER8-OHM1WR2R3R4R5VR1R6R7R8ZD1NC9VBATT.SW1R9T1NCNCC3C1C4C2Panic Alarm
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publish time: 2020-10-23
Circuit Everyday

The core of the whole circuit anti-grab bag alarm is the operational amplifier IC CA3140 (IC1) configured as a comparator.Two inputs (inverse and in-phase) are provided to the op amp's pins 3 and 2, respectively, and the output is obtained from pin 6.

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