Electronic temperature sensor

Details Electronic temperature sensor Electronic temperature sensor

1977-11-17

1978-10-24

Swisher, S. Clement

Measuring and testing

Gas analysis

Moisture content or vapor pressure

307310, G01K 716

Patent

active

041214617

ABSTRACT:
An electronic temperature sensor utilizing monolithic charge transfer circuitry is disclosed. A first charge transfer circuit supplies a charge storage element with N.sub.1 first charge packets, N.sub.1 being the number of charge packets required to change the charge stored by the charge storage element from a first to a second value. A second charge transfer circuit supplies the charge storage element with N.sub.2 second charge packets, N.sub.2 being the number of charge packets required to change the charge stored by the charge storage element from the first to the second value. The magnitude of the second charge packet varies from the magnitude of first packet as the linear function of the temperature to the sensor. A counter generates an output signal which is a function of the difference between N.sub.1 and N.sub.2 and which is indicative of the magnitude of the temperature to be sensed.

REFERENCES:
patent: 3809929 (1974-05-01), Vittoz
patent: 3826983 (1974-07-01), Garratt
patent: 3882384 (1975-05-01), List
patent: 3950991 (1976-04-01), Grass

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