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Thermistor

Thermistor

 The thermistor is another type of temperature sensor whose name is a combination of the words temperature-sensitive resistors. A thermistor is a particular type of resistor that changes its physical resistance when exposed to temperature changes. Thermistors are generally made of ceramic materials such as nickel oxide, manganese, or cobalt coated in glass, making them easily vulnerable. Their main advantage over fast-acting types is their speed in response to any change in temperature, accuracy, and repeatability.

Thermistors are classified by their resistance value at room temperature (usually at 25°C), their time constant (time to reach temperature change), and their power range according to current flow. Most types of thermistors have a negative temperature coefficient of resistance (NTC) their resistance value goes down with an increase in temperature, and of course, there is a value that has a positive temperature coefficient (PTC) whose resistance value goes up with an increase It goes in temperature.

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