What is the Thermistor Sensor?
A thermistor is a type of resistor that use to sense cold and heat. It also called a thermal resistor and whose resistor changes with a change in temperature.
They are reliable, cheap and responds quickly, therefore, they are used for simple low temperature but not for high temperature.
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They are used in home appliances, refrigerators, and circuit protection.
Thermistors are of two opposite fundamental types:
- NTC Thermistor (Negative temperature coefficient):- In NTC, when the temperature is increased then resistance decreased. It is commonly used as a temperature sensor. The suitable temperature range is between -55°C to +150°C.
- PTC thermistors (Positive temperature coefficient):- In PTC, when the temperature is increased then resistance increased.
Uses
- In-circuit protection.
- Uses in home appliances like refrigerator, ovens.
- Digital thermometers.
- Rechargeable batteries.