Bridge balancing circuit

Details Bridge balancing circuit Bridge balancing circuit

1990-02-20

1991-02-12

Stephan, Steven L.

Electricity: power supply or regulation systems

Including an impedance

In a bridge

324607, 324706, 341146, H03H 100, H03M 172

Patent

active

049927248

ABSTRACT:
A bridge balancing circuit includes a bridge having a resistance change type sensor, a differential amplifier for extracting a voltage difference across two central nodes of the bridge, a comparator connected to the output terminal of the differential amplifier, a D/A converter an output terminal of which is connected to one of the two central nodes, and a controller for controlling the D/A converter. The differential amplifier and the comparator automatically detect a balanced point of the bridge, and the controller maintains a balanced state of the bridge.

REFERENCES:
patent: 3577075 (1971-05-01), Krygeris et al.
patent: 3728700 (1973-04-01), Duval
patent: 3960010 (1976-06-01), Gustafsson
patent: 4057755 (1977-11-01), Piesche
patent: 4390864 (1983-06-01), Ormond
patent: 4549073 (1985-10-01), Tamura et al.
patent: 4567429 (1986-01-01), Livsey

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