Linearized thermistor temperature measuring circuit

Details Linearized thermistor temperature measuring circuit Linearized thermistor temperature measuring circuit

G - Physics

01

K

73/164, 73/72

G01K 7/24 (2006.01) G01K 7/25 (2006.01)

Patent

CA 1079091

ABSTRACT OF THE DISCLOSURE A substantially constant voltage is maintained across a negative temperature coefficient thermistor having an exponential resistance- temperature characteristic. The resultant current through the thermistor is an exponential function of sensed temperature. In response to this current through the thermistor, current is supplied to a forwardly biased decoder diode having a corresponding exponential current-voltage characteristic so that the resultant voltage across the decoder diode is a sub- stantially linear function of sensed temperature.

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