Sometimes when in electronic circuit components like Transistors, MOSFETs, ICs get heat up. Then to prevent it we use a heat sensor. This detects the overheated components and beeps the buzzer
What is a heat sensor?
A heat Sensor is such type of sensor that detects the presence of heat. When the temperature of the surrounding around this sensor increase, it starts working. This sensor detects the heat with the help of a thermal resistor.
When the temperature rises, it is detected by the thermal resistor and it completes the flow of current in a circuit. This is the working of this circuit.
This circuit is also used to detect fire and also used in Electronic to prevent components from overheating.
Components Required -
2n22221
2.2k NTC
10k Pre-set
1uf Capacitor
Battery
