Gauge driver for use with a remote sensor and having reduced off

Details Gauge driver for use with a remote sensor and having reduced off Gauge driver for use with a remote sensor and having reduced off

1990-01-08

1991-10-22

Harvey, Jack B.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324143, G01R 2702

Patent

active

050599160

ABSTRACT:
A gauge circuit for use with a wide angle air core meter display having high linearity and adapted for use with a remote sensing resistor. A constant sense current is provided and its value is moudlated at a frequency that is high with respect to the frequencies associated with offset voltages that occur with a sense resistor that is grounded remotely from the gauge ground. A low duty cycle pulse modulation shape is disclosed for the purpose of minimizing electromagnetic interference radiation.

REFERENCES:
patent: 3657640 (1972-04-01), Jelinek et al.

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