Temperature dependent power supply for use with a bridge transdu

Details Temperature dependent power supply for use with a bridge transdu Temperature dependent power supply for use with a bridge transdu

1990-04-09

1991-10-01

Beha, Jr., William H.

Electricity: power supply or regulation systems

Including an impedance

In a bridge

73766, 310315, 323907, G05F 1567

Patent

active

050536923

ABSTRACT:
In order to compensate for the effects of temperature variations on a transducer such as a piezo-resistive bridge, the bridge is fed from a temperature dependent power supply circuit. The power supply circuit comprises a temperature sensitive element with first and second adjustment means for adjusting the slope of supply voltage for the transducer against temperature on first and second sides, respectively, of a predetermined temperature. The second adjustment means provides an adjustment which is independent of the first adjustment means so that repeated temperature cycling during calibration is unnecessary.

REFERENCES:
patent: 3404297 (1968-10-01), Fewings et al.
patent: 3841150 (1974-10-01), Pearson
patent: 3967188 (1976-06-01), Spencer
patent: 4558238 (1985-12-01), Yamada et al.
patent: 4686450 (1987-08-01), Pichat

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