Method for compensating an offset voltage temperature drift in a

Details Method for compensating an offset voltage temperature drift in a Method for compensating an offset voltage temperature drift in a

1994-06-23

1996-07-09

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Thermal

73766, 36457103, G01R 144, G05F 1567

Patent

active

055347738

ABSTRACT:
A method for compensating an offset voltage temperature drift in a semiconductor strain gage sensor in which a temperature-sensitive power supply is modeled as the one for providing the output voltage V.sub.0 =KV.sub.S (1+.alpha.T), and, under the condition that the resistance of the compensating resistor and the coefficient .alpha. are within practical ranges, respectively, the parameter K is determined so as to minimize the compensating error, thereby both of the primary order term and the secondary order term with respect to the temperature in the offset voltage of the strain gage can be compensated so that the offset temperature drift can be reduced.

REFERENCES:
patent: 5053692 (1991-10-01), Craddock
patent: 5460050 (1995-10-01), Miyano
Shimada et al "Oil Filled Type High Pressure Sensor Using a Silicon Diaphragm" IECON '84.

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