Electronic thermometer

Details Electronic thermometer Electronic thermometer

1977-11-08

1979-12-04

Swisher, S. Clement

Measuring and testing

Gas analysis

Moisture content or vapor pressure

G01K 724

Patent

active

041765567

ABSTRACT:
An electronic thermometer utilizes a microprocessor, a bridge circuit containing a temperature responsive transducer, a charge and discharge circuit, and an interrupt signal generating circuit, to provide an accurate temperature measurement while reducing the size of the measuring apparatus. A counted value corresponding to a reference temperature is added to a counted value corresponding to the time it takes a capacitor connected to the bridge circuit to discharge, and the result is converted to a temperature degree displayed after operation in the microprocessor.

REFERENCES:
patent: 3620082 (1971-11-01), Peters
patent: 3702072 (1972-11-01), Georgi
patent: 3702076 (1972-11-01), Georgi
patent: 3875503 (1975-04-01), Hayashi
patent: 3911374 (1975-10-01), Bussc
patent: 4009615 (1977-03-01), Ruhl

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