Voltage dividers can easily be made with a thermistor and fixed resistor.
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More heat leads to a lower resistance for a NTC thermistor (higher resistance for a PTC thermistor). So the voltage divider output voltage will drift more towards the side of the supply that the NTC thermistor is connected to.
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I simply use this circuit to touch the NTC thermistor to a heated resistor or to separate them. Any heated/cooled item can be used in place of the lone resistor.
My NTC thermistor is close to 10KΩ at room temperature. So dividing the supply voltage with a 10K resistor gives about half supply voltage at room temperature.
Voltage goes up with heat and down with cold in relationship to room temperature in the circuit shown.
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- Information on this site is not guaranteed to be accurate. Always consult the manufacturer info/datasheet of parts you use. Research the proper safety precautions for everything you do.