What is the primary function of a thermistor?

The primary function of a thermistor is to sense temperature changes. A thermistor is a type of temperature-sensitive resistor whose resistance varies significantly with temperature. This characteristic enables thermistors to be used in various applications where temperature measurement or control is necessary. The change in resistance as the temperature fluctuates allows for precise readings, which can be converted into temperature values.

In practical applications, thermistors are often used in thermometers, temperature sensors in HVAC systems, and electronic devices where temperature monitoring is crucial. Their ability to provide accurate and quick responses to temperature changes makes them a preferred choice in many electronic and industrial applications.