Thermistor

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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.
thermistor

Uses

  • In-circuit protection.
  • Uses in home appliances like refrigerator, ovens.
  • Digital thermometers.
  • Rechargeable batteries.
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