What is a Thermistor

What is a Thermistor?
-A Thermistor is simply a resistor that is sensitive to temperature change
-As the temperature changes, the resistance changes
-Two different styles
-NTC (negative temperature coefficient)
-As temp. increases, resistance will drop
-PTC (positive temperature coefficient)
-As temp. increases, the resistance will also increase
-NTC Thermistors are more commonly used for temperature measurement

Thermistor advantages and disadvantages
-Advantages
-Less expensive
-Can measure change in temperature much faster
-Provide higher resolution (better accuracy) within the range they can measure
-Disadvantages
-Limited temperature range in which the measure
-Max is 350 Celsius
-Resistance to Temperature correlation is non-linear
-Can "self heat" causing inaccurate temperature readings

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