Uses for a thermistor

Updated July 19, 2017

A thermistor is a resistor, or type of sensor used to regulate and measure temperature, such as heat and cold. A thermistor is made up of ceramic with a high precision at a specific temperature level. The thermistor contains electrical networks, circuits and wires. The main characteristics of a thermistor are: power, noise, tolerance, temperature and resistance. You can use a thermistor for many different things. Here are six uses for a thermistor.

Meter Compensation

You can use a thermistor’s negative temperature to allow the coil resistance of a meter to become compensated. The thermistor helps the temperature to rise. The coil’s resistance is constant. With the thermistor, the meter’s temperature can be used at a wider range.

Inrush-Current Device

You can use a thermistor in a power supply. A thermistor is used as an inrush-current device. In a power supply, a thermistor provides more resistance, preventing currents from moving. The thermistor heats up, allowing higher flows of current.

Automotive Applications

Automotive applications are another among the many uses for a thermistor. In an automobile, you can use a thermistor to monitor oil and coolant temperatures. A thermistor also regulates the temperature of a battery pack.

Differential Thermometers

For measuring and detecting a temperature differential, two thermistors can be used. You can use thermistors in a Wheatstone circuit to lessen the components. This is helpful when monitoring wind temperatures at various elevations.

Master-Slave Control

A thermistor can be used when a product is going through various baths. The master bath uses a thermistor to detect low or high temperatures. The rest of the baths are slaves, which also use a thermistor. The slave baths are kept in a controller and at a similar temperature as the master bath.

LED Current Control

LED Current Control is another among the uses for a thermistor. You can use a thermistor to provide adequate current flow, so that the LED chip is maintained at normal heat level. The thermistor controls the current contained within the driver circuit. Controlling the current allows you to use LED in various applications.

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About the Author

Olga Chacon has been writing since 2006. Her articles have appeared in "Siglo Hispano" magazine and her poetry was published in the anthology "The Ink Spot." Chacon holds a Bachelor of Arts in English and creative writing from the University of Texas at El Paso.