Working principle of burglar alarm

This Laser burglar security alarm system is designed and simulated using Circuit Wizard. Mahmud Shehu AHME Abubakar Sadiq. The principle of operation of this burglar alarm is.

The approach used in this work is the modular approach where the overall design was first broken into functional block . Burglar alarms work as your eyes when you are away.

There are numerous principles on which these divine systems work but the most important one is the opening and closing of an electronic circuit .

WORKING OF BURGLAR ALARM CIRCUIT: The working of this circuit is very easy to understand.

Thus by using the Astable multivibrator . PRINCIPLE OF BURGLAR ALARMS All alarms systems consist of four main component areas: - Detection Devices, to detect if an intrusion has occurred . This circuit helps you to guard your precious documents as well as jewellery from intruders or theft. Read this post for its circuit diagram and working. This hidden battery kicks in when somebody cuts off the main power source (by clipping the battery cables, for example).

A homemade alarm might be just the thing you need to keep nosy siblings from poking around. Even for general home protection, a homemade alarm can take burglars by surprise. You can make an alarm at home to keep. An IR sensor consists of two parts, the emitter circuit and the receiver circuit.

Direct incidence of radiation on the photodiode is applicable in burglar alarm circuit. The IR LED is fit on one side of the door frame and the . PIR sensor used here to detect body motion and. It has inbuilt oscillators and circuitry to produce the . SIMPLE LASER BURGLAR ALARM CIRCUIT. It is an advance simple, efficient and low cost circuit.

As the name suggests, the circuit is based on Laser. We all know about the features of Laser, Long Range, pointed beam, . The voltage drop across the LDR is used to drive the transistor switch. INTRODUCTION The design of the burglar alarm system is divided into two major sections.

Double-lock: see Four-eyes principle.