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Miniatur Alarm Generator Circuit for Laptop Protector

2016-02-21 02:47  
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The diagram below appears Miniatur Alarm Generator Circuit for Laptop Protector. It such a home made tilt switch fixed inside the laptop case in order to protect laptop against theft since it will sounds loud when someone tries to take the laptop.

alarm generator circuit diagram using CD4538 IC

This device is powered by a 12V battery used in remote control devices. The components of this miniature alarm generator are readily available to be assembled on general PCB. It uses such IC TLO71 (IC1) for the voltage comparator, and IC CD4538 (IC2) for a monostable multivibrator.

See how to assembly theMiniatur Alarm Generator Circuit for Laptop Protectorin pdf filetype (source: efymag.com).