Thermistor name itself has the meaning i.e. thermistor = thermal + resistor. Thermistor is a semiconductor device having a resistance that decreases rapidly with an increase in temperature. It is used for temperature measurement, to compensate for temperature variations in a circuit, etc.

Application:

      1. Temperature measurement devices.

      2. Battery protection circuits.

      3. Air Conditioners.

      4. As sensors in automotive applications to monitor things like coolant or oil temperature inside the engine, and provide data to the ECU and to the dashboard.

      5. Toasters, coffee makers, refrigerators, freezers, hair dryers, etc.

A thermistor is a type of resistor whose resistance is vary according to temperature of the thermistor.