Thermistor Resistance

Dated:2016-11-21      Popularity:1218


Thermistors

In this article, we go over how the resistance of thermistors vary with the temperature they are exposed to. The amount of heat or cold a thermistor is exposed to determines the amount of resistance they will offer in a circuit.

There are two main types of thermistors: negative temperature coefficient (NTC) thermistors and positive temperature coefficient (PTC) thermistors. Though both NTC and PTC thermistors change in accordance to the temperature they are exposed to, they do so in opposite manners. 

NTC Thermistor Resistance: Negative temperature coefficient thermistors are thermistors whose resistance value decreases when the temperature they are exposed to increases. It's an inverse relationship. As temperature goes up, resistance goes down. As temperature goes down, resistance goes up.

PTC Thermistor Resistance: Positive temperature coefficient thermistors are thermistors whose resistance value increases when the temperature they are exposed to increases. Unlike NTC thermistor resistance, it's a direct relationship. As temperature goes up, resistance goes up. As temperature goes down, resistance goes down.

Thermistor  

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