If you are looking for a temperature sensor that is cost effective and accurate, your first choice may be a thermistor. It is a type of resistor whose resistance changes with change in temperature.  This article deals with the working, types and applications of a thermistor. Lets start! What is a Thermistor? Coined from the words “THERmally controlled resISTOR”, thermistor is a temperature controlled resistor. The resistance offered by this solid state temperature controlled device depends on the ambient temperature. All resistors do have a temperature dependency that is given by their temperature coefficients. For most of the resistors (fixed and variable), this temperature coefficient is kept very low, such that the change in temperature does not significantly affect their resistance. On the other hand, the temperature coefficient of thermistor is considerably high, thus their resistance change with respect to change in temperature. Since in a thermistor, physical changes (change…