Semiconductor strain gauge with temperature compensator

Details Semiconductor strain gauge with temperature compensator Semiconductor strain gauge with temperature compensator

1978-10-05

1979-11-06

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

G01B 716

Patent

active

041731484

ABSTRACT:
A bridge circuit with four arms including semiconductor strain gauge elements has input terminals for coupling a DC power supply with a pair of diagonally opposite junctions of the bridge circuit per se and output terminals coupled with a pair of remaining diagonally opposite junctions. Initial zero-point temperature compensators each are connected in series and in parallel to each of semiconductor strain gauge elements on adjacent two arms of the bridge circuit. Temperature compensators for zero-point shift adjustment are each provided between the adjacent arms closer to each output terminal. A temperature compensator for span adjustment is provided between one of the input terminals and the DC power source. A constant current control unit for feeding a constant current to the bridge circuit is provided between the other input terminal and the DC power supply.

REFERENCES:
patent: 2801388 (1957-07-01), Ruge
patent: 3161821 (1964-12-01), Price et al.

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