In this tutorial, we are going to learn about Circuit Diagram for Burglar Alarm.
Burglar Alarm – As per below circuit of Burglar Alarm, There is the tone generator can simply be modified into an efficient burglar alarm. For this purpose, just a thin wire must be connected between the base of one transistor and the negative potential of the battery. As soon as the connection is made, the tone stops. The thin wire is LED around a window frame or a door step. If an intruder now opens the window or the door, the thin wire is broken and the alarm sound starts immediately.The breaking of the wire can be simulated by removing it from the circuit. As soon as the connection is broken, the alarm sound is starting up.