SIMPLE SMOKE ALARAM SYSTEM

Definition :

A fire alarm system has a number of devices working together to detect and warn people through visual and audio appliances when smoke, fire, carbon monoxide or other emergencies are present. Alarms can be either motorized bells or wall mountable sounders or horns.

Required Components :

Alaram System

1. R1, R4, R6 : 1 k.ohm Each 1no.s

2. R2 : 100 k.ohm 1no

3. R3 : 10 k.ohm 1no

4. R5 : 47 k.ohm 1no

5. C1 : 104 / 0.1 mfd 1no

6. C2 : 103 / 0.01 mfd 1no

7. T1, T2 : BC 547 2no's

8. Buzzer : 12v

9. IC 555 1no

10. LDR 1no

11. LED 1no

12. 12v Battery 1no

1 k.ohm Resistancs color coding:

100 k.ohm Resistancs color coding:

10 k.ohm Resistancs color coding:

47 k.ohm Resistancs color coding:

104 / 0.1 mfd capacitor

103 / 0.01 mfd capacitor

BC 547 Transistor 

Buzzer 12v

555 IC

LDR

LED

12v Battery

Circuit Diagram Of Simple Smoke Alaram System

Aditional: 12v powesupply without Transformer 

Check This Link Below

Blog

http://maragathamillam.blogspot.com/2020/04/230v-ac-to-12v-dc-without-transformer.html

Youtube 

https://youtu.be/vovrWQ6UdK4

Further Details Contact:

Maragatham Illam:

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