Burglar Alarm System Project


Posted on Feb 6, 2014

This burglar alarm system circuit is using a infrared proximity detector that triggers an alarm when the rays falling on its sensor are interrupted. It is different from others burglar alarm systems because is a very simple diy project and can offer you great satisfaction. The circuit of IR burglar alarm system comprises transmitter and receiver-c


Burglar Alarm System Project
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um-alarm sections. It works off 6V DC, 500mA uninterrupted supply and uses low-cost readily-available electronic components. LED2 is used for indicating power-on. Check out the infrared alarm circuit too. The transmitted IR signal directly falls on IR sensor TSOP1738. Whenever the IR signal is interrupted, its output pin 3 goes low and IC2 is triggered at pin 5 through transistor T2. As a result, its output at pin 7 goes low (for a preset time) to forward bias siren-driver transistor T2. This condition is indicated by the glowing of LED1. The time-out period can be increased or decreased by changing the value of capacitor C6. Assemble the transmitter and receiver-cum-alarm circuits on two separate general-purpose PCBs and house in suitable cabinets. Mount the units on the opposite sides of the entrance gate such that IR rays from IR LED1 fall directly on the IR receiver module. hai, THIS PROJECT IS GOOD AND WE CAN UNDERSTAND SOMANY THINGS ABOUT THIS CIRCUIT DIAGRAM . CAN YOU PLEASE SEND THE DETAILED EXPLANATION ABOUT THIS PROJECT




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