Circuit Diagram Of Burglar Alarm

Other than the family dog the most basic burglar alarm is a simple electric circuit built into an entry way.

Circuit diagram of burglar alarm. Circuit design of burglar alarm system. To turn the electricity on or off. The circuit is very useful and can be used for many anti theft and security. Simple burglar alarm circuits.

The c1 c4 to protects a noise signal from either switch which may cause the alarm to be up. As shown in the circuit diagram the sensor is an ordinary thin wire conductor which is laid across the restricted area in such a way that anybody intruding the place gets caught up against the conductor and in the course breaks it up. Burglar alarm using an ordinary conductor as the sensor this is probably the simplest one among all. Pir sensor used here to detect body motion and um3561 speaker to produce police siren after any movement detection.

We come to try build the circuit steal model to is simple better. It is placed at the maximum possible range from photo diode. Burglar alarm system is an important part of home security systems. The circuit shown in figure 1 is using only two components which are a transistor and a 100k resistor.

At the output of the circuit you can connect any type of 12v and 200 to 300ma current rating buzzer siren horn alarm etc. The cathode of the photo diode is connected to supply while anode is connected to 10kω resistor. In any circuit whether it s powering a flashlight or a computer electricity only flows when you give it a path between two points of opposite charge. This intruder alarm or burglar alarm circuit is based on pir sensor um3561 and speaker.

Here is a very sensitive and long range laser burglar alarm circuit for security purposes that can detect a small interruption in the laser beam coming to the laser receiver circuit and activate a loud alarm for upto one minute.