Humistor
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A humistor is a type of variable resistor whose resistance varies based on humidity.
A humistor is a type of variable resistor whose resistance varies based on humidity.
Operation
A capacitive humidity sensor detects humidity based on a change of capacitance between two detection electrodes provided on a semiconductor substrate. The capacitance type humidity sensor detects humidity by measuring the change in the electrostatic capacity of an element corresponding to the ambient humidity. A resistive humidity sensor detects relative humidity by measuring the change in the resistance of an element corresponding to the ambient humidity. Most of the resistance type humidity sensors include an electrolytic, polymeric, or metallic oxide sensor element. An impedance humidity sensor changes its electrical impedance as the humidity of the surrounding environment changes, and the measured impedance is converted into analog signal for humidity readings.
Text derived from https://en.wikipedia.org/w/index.php?oldid=1116506264 under CC BY-SA 4.0; modifications have been made.