Zero and span adjustment circuit for current/pressure transducer
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United States of America Patent
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-
Jun 6, 1989
Grant Date -
N/A
app pub date -
Nov 12, 1987
filing date -
Nov 12, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A zero and span adjustment circuit for current to pressure transducers. Current sources in parallel with the transducer bypass current around the transducer. One current source includes a variable resistor for adjusting the zero set point independently of the input current signal. The other current source includes a variable resistor for adjusting the span of the output pressure proportional to the input current signal. A feedback resistor couples a feedback signal from the transducer current to the other current source to vary the bypass current.
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