Linearized thermistor temperature measuring circuit

Details Linearized thermistor temperature measuring circuit Linearized thermistor temperature measuring circuit

1977-01-03

1978-08-15

Myracle, Jerry W.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

G01K 724

Patent

active

041063414

ABSTRACT:
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 substantially linear function of sensed temperature.

REFERENCES:
patent: 3440883 (1969-04-01), Lightner
patent: 3517556 (1970-06-01), Barker
patent: 3688581 (1972-09-01), Le Quernec
patent: 3808469 (1974-04-01), Raymond et al.
patent: 3839647 (1974-10-01), Simmons
patent: 3934476 (1976-01-01), Lamb,

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