Generally, Fire alarm circuits are used to detect fire in devices. Unfortunately when any electronic device catches fire then the sensor detects the fire and the circuit gets activated this results in the beeping of the buzzer.
These fire alarm circuits are also used in buildings and auditoriums to detect fire.
This circuit contains a small electronic component, which detects fire name the thermistor.
What is a Fire Alarm Circuit?
A fire alarm circuit is such type of a circuit that detects fire by its sensor name the thermistor and activates the circuit which results in the beeping of the buzzer.
The components required to make this circuit are easily found on old scraps circuits.
These are mainly used in buildings, houses, and auditoriums to detect fire.
1) LM358 ic
2) 10k Thermistor
3) 10k resistance