Transducer interface circuit
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United States of America Patent
Stats
-
Jul 2, 1991
Grant Date -
N/A
app pub date -
Jan 2, 1990
filing date -
Jan 2, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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