Non-intrusive fiber optic electromagnetic field probe apparatus

Details Non-intrusive fiber optic electromagnetic field probe apparatus Non-intrusive fiber optic electromagnetic field probe apparatus

1988-12-19

1990-05-22

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

25022711, 250551, G01R 3312

Patent

active

049280678

ABSTRACT:
A probe tip is employed to measure electromagnetic fields without the use of a metallic conducting wire or cable which would otherwise distort the field being measured. The probe tip includes a variety of different circuits, each of which contains a separate battery, a powered field measurement sensor and an amplifier. A light source, which is internal to the probe tip and coupled to the amplifier, operates to convert the measured field to an analog optical signal. The analog optical signal is transmitted via an optical fiber to a receiver/preamplifier circuit which converts the optical signal to an electrical signal at the fiber's far end. This receiver/preamplifier device can be coupled directly to an oscilloscope or other instrument which are employed and used for the display or recording the magnitude of the electromagnetic field as measured by the probe.

REFERENCES:
patent: 4032843 (1977-06-01), Loucks
patent: 4147977 (1979-04-01), Dimmick
patent: 4502937 (1985-03-01), Yagi
patent: 4516073 (1985-05-01), Doriath et al.
patent: 4533829 (1985-08-01), Miceli et al.
patent: 4542338 (1985-09-01), Arditty et al.
patent: 4571691 (1986-02-01), Kennon
patent: 4642559 (1987-02-01), Slough
patent: 4750216 (1988-06-01), Boyce

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