Electrical circuit for sensors requiring a variety of bias volta

Details Electrical circuit for sensors requiring a variety of bias volta Electrical circuit for sensors requiring a variety of bias volta

1999-03-17

2000-09-19

Nguyen, Viet Q.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327 52, 327 53, 327 54, 327530, 327535, 326 37, 326 39, 330 96, 330127, 330129, G01N 2204, G08C 1904

Patent

active

061218235

ABSTRACT:
An electrical circuit provides a variety of stable and reliable bias voltages to accommodate the bias requirements of various sensor types. The electrical circuit comprises a programmable analog circuit capable of maintaining a plurality of programmable threshold voltages and producing a plurality of intermediary voltages. Such voltages act as an input to a differential amplifier that outputs a bias voltage within a range consistent with said programmable threshold voltages. The bias voltage is further conditioned by a conditioning amplifier that further stabilizes the bias voltage to an attached sensor.

REFERENCES:
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patent: 5574678 (1996-11-01), Gorecki
patent: 5841316 (1998-11-01), Shau
patent: 5939888 (1999-08-01), Nelson
Advanced Linear Devices, Inc., "Electrically Programmable Analog Device Applications", Application Note AN1108, pp. 1-16 (1997).

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