Circuit for linearization of transducer

Details Circuit for linearization of transducer Circuit for linearization of transducer

1982-07-02

1985-01-08

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

With pressure and/or temperature compensation

G01B 718, G01L 1900

Patent

active

044921225

ABSTRACT:
A circuit having a transducer which normally provides a non-linear output as a function of a stimulus to which the transducer is responsive. The circuit is provided with a feedback resistor from at least one of a pair of output terminals coupled to the transducer, and the feedback resistor is coupled to the power input of the transducer. Any change in the output voltage will cause a current change through the transducer, and this current change has a linearizing effect on the output voltage. The circuit is especially adapted for use with a Wheatstone bridge having a power amplifier coupled to the input thereof and a differential amplifier coupled to the output thereof. In such a case, a pair of feedback resistors couple the output terminals of the differential amplifier with the input terminals of the power amplifier.

REFERENCES:
patent: 3568044 (1971-03-01), Elazar
patent: 3847017 (1974-11-01), Watts
patent: 4202218 (1980-05-01), Romo
patent: 4362060 (1982-12-01), Okayama et al.

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