Zero and span adjustment circuit for current/pressure...

Details Zero and span adjustment circuit for current/pressure... Zero and span adjustment circuit for current/pressure...

G - Physics

05

D

342/12

G05D 16/20 (2006.01)

Patent

CA 1306043

ZERO AND SPAN ADJUSTMENT CIRCUIT FOR CURRENT/PRESSURE TRANSDUCER ABSTRACT OF THE DISCLOSURE 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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