Communications: electrical – Continuously variable indicating – With supply voltage regulation or compensation
Patent
1984-06-06
1988-01-26
Myracle, Jerry W.
Communications: electrical
Continuously variable indicating
With supply voltage regulation or compensation
324 76R, G01R 1900
Patent
active
047219572
ABSTRACT:
A parameter sensor system includes a sensor, one terminal of which is grounded on a metal chassis or the like. The ground potential of the metal chassis at the point of connection may shift above or below true ground potential due to the operation of other, high current devices also attached to the chassis. A switchable current source is connected to the second terminal of the sensor, and is turned on and off. A measuring circuit is also connected to the second terminal, and provides an output signal representative of the difference between the voltage on the second terminal when the current source is on and when it is off. The output signal varies as a direct function of sensor resistance, and is unaffected by shifts in ground voltage at the sensor.
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Myracle Jerry W.
TRW Inc.
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