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What are the salient features of thermistors? 1. They are compact, rugged and inexpensive 2. They have good stability when properly aged 3. The response time of thermistors can vary from a fraction of a second to minutes, depending on the size of the detecting mass and thermal capacity of the thermistor

What are the salient features of thermistors? 1. They are compact, rugged and inexpensive 2. They have good stability when properly aged 3. The response time of thermistors can vary from a fraction of a second to minutes, depending on the size of the detecting mass and thermal capacity of the thermistor Correct Answer 1, 2 and 3

  • Thermistors are generally made up of semiconductor materials.
  • Thermistors have a negative temperature coefficient of resistance i.e. the resistance decreases with an increase in the temperature.
  • Thermistors can measure the temperature in the range of -100°C to 300°C.

The basic circuit used for this purpose is shown below:

[ alt="F1 S.B 8.5.20 Pallavi D2" src="//storage.googleapis.com/tb-img/production/20/05/F1_S.B_8.5.20_Pallavi_D2.png" style="width: 365px; height: 172px;">


Advantages of thermistor:

  • It is rugged and compact.
  • It is inexpensive.
  • It has good stability.
  • It requires relatively simple circuitry.
  • The response time of a thermistor can vary from a fraction of second to minutes, depending on the size of the detecting mass and capacity of the thermistor. 

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