6)Magnetic Security Alarm

Introduction:

This Project Is “Magnetic Security Alarm Using NE 555 Timer IC”.This Alarm Circuit Is Used To Protect Our House In Night With Alarm.This Project Circuit Easy To Made It In Our House.This Project Cost is Rs.100 Without 220VAC Power Supply.

Working:

This Project is Worked Similar That Simple Continuity Alarm Circuit.The Main Part Of This Circuit Is “Magnetic Reed Switch”.This Sensor Work Depend Upon The Magnetic Movement.When The Magnet Moved Apart From The Reed Switch,Thus The 1^st Pin Of IC is Started Contacting With The Ground (-)ve Of The Battery.Then The Circuit Was Fulfill and The Alarm Was On.When The Magnet Replaced On Their Place,The Alarm Was Off.

Part List:

1. NE 555 Timer IC=1

2. 8 Pin IC Base=1

3. 10KΩ ¼ Watt Resistor=1

4. 1K Ω ¼ Watt Resistor=1

5. 1µF Capacitor=1

6. 10KpF Capacitor=1

7. 9 Volt Battery=1

8. Battery Strip=1

9. Zero Board=1

10. Switch=1

11. Male To Female Jumper Wires=2

Circuit Diagram:

To Know More Details:

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