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how does the ntc thermistor vary with temperature?
I know it decreases resistance as it gets hotter but want to know why?
An NTC thermistor is DESIGNED to reduce resistance with temperature. It has it's uses.
NTC == negative temp coefficient, PTC = positive temp coefficient
Usually in electronics design, we want a resistor to be exact stable for all temperatures. Thermistors are made from especially chosen materials which change in resistivity based on temperature.
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