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- Q625 - Electrical, Electronic, & Control Engineering
136. What is the name of the semiconductor device with the essential characteristic that it decreases in resistance with an increase in temperature?
A thermistor with a negative temperature coefficient (NTC) exhibits decreasing resistance with increasing temperature, fulfilling the question's description. NTC thermistors are semiconductor devices; PTC thermistors increase resistance with temperature. Resistance temperature detectors (RTDs) typically increase resistance linearly with temperature, and thermocouples generate voltage based on the Seebeck effect, not resistance changes.
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