Transducer interface circuit

Details Transducer interface circuit Transducer interface circuit

1990-01-02

1991-07-02

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307559, 307552, 307561, 340652, 324537, H03K 1714, H03K 1716, H03K 1706, H03K 508

Patent

active

050292781

ABSTRACT:
A transducer interface circuit is provided having means for detecting loss of connection of a transducer to the interface circuit. The interface circuit is intended for use with a transducer providing an output between two electrical poles of opposite polarity. Differential inputs of a differential amplifier are connected to the transducer poles. A bias current source is provided proximate the amplifier at least at one input, and the other input is connected to ground. Loss of connection between the transducer and amplifier results in saturation of the amplifier output.

REFERENCES:
patent: 3283259 (1966-11-01), Banks
patent: 3731296 (1973-05-01), Spira
patent: 4155080 (1979-05-01), Kovacs
patent: 4301403 (1981-11-01), Hawkes et al.
patent: 4727332 (1988-02-01), Bundy
patent: 4764759 (1988-08-01), Braun et al.
patent: 4791321 (1988-12-01), Tanaka et al.
patent: 4833342 (1989-05-01), Kiryu et al.
patent: 4877981 (1989-10-01), Gomes
Analog Devices product brochure-AD594/AD595.

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