Resonant loop current disturbing probe

Details Resonant loop current disturbing probe Resonant loop current disturbing probe

1987-06-04

1989-07-11

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, 343748, 324 96, G01D 534

Patent

active

048474916

ABSTRACT:
A resonant loop current disturbing probe. This probe comprises a conductive loop closed on a photoresistor, a light-emitting diode optically coupled to the photoresistor by an optical fiber and a diode control circuit. This probe is characterized in that it also comprises a variable capacitor connected in parallel to the loop. The loop-capacitor assembly forms a resonant circuit, the capacitor being adjusted in such a way that said circuit resonates at the frequency of the current to be disturbed. Application is to the measurement of the current in antennas.

REFERENCES:
patent: 1781363 (1930-10-01), Bruce
patent: 3902177 (1975-08-01), Mori et al.
patent: 4518965 (1985-05-01), Hikada
"Photoconductive Probe for Measuring Electromagnetic Fields", p. 1748.
French Search Report

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