Electronic circuitry with self-calibrating feedback for use with

Details Electronic circuitry with self-calibrating feedback for use with Electronic circuitry with self-calibrating feedback for use with

1983-06-07

1985-09-10

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

324117R, 324130, 350376, G01R 1900, G01R 102

Patent

active

045409374

ABSTRACT:
There is provided by this invention an electronic circuit for interfacing with a magneto-optical current sensor employing the Faraday effect to measure current in a high voltage transmission line. A DC biasing voltage is applied to the output of a photodetector to substantially eliminate the DC component providing a substantially AC output signal to the circuit. There is also provided a negative low pass error feedback to self-calibrate the circuit.

REFERENCES:
patent: 3778710 (1973-12-01), Snook
patent: 4363061 (1982-12-01), Vaerewyck et al.

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