Semiconductor pressure converter

Details Semiconductor pressure converter Semiconductor pressure converter

1987-08-31

1989-01-31

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

With pressure and/or temperature compensation

73721, 73727, G01L 708, G01L 906, G01L 1904

Patent

active

048007595

ABSTRACT:
A semiconductor pressure converter wherein a drive voltage is applied to a power supply end of a shearing type gage formed at the strain generating part of a semiconductor diaphragm, and an output voltage appearing at the output end thereof is amplified with an amplifier. The zero point is adjusted by applying a bias voltage to the amplifier which is related to the drive voltage. The span is adjusted without interference to the zero point by changing the feedback voltage of the amplifier. Linear compensation, temperature zero point compensation and temperature span compensation are attained without any mutual interference.

REFERENCES:
patent: 3646815 (1972-03-01), Martin et al.
patent: 4233848 (1980-11-01), Sato et al.
patent: 4362060 (1982-12-01), Okayama et al.
patent: 4480478 (1984-11-01), Sato et al.
patent: 4732044 (1988-03-01), Dell' Acqua et al.

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