DC current sensor using a continuous annularly shaped detection

Details DC current sensor using a continuous annularly shaped detection DC current sensor using a continuous annularly shaped detection

1995-03-13

1995-12-12

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

324126, 324127, 324117H, G01R 104

Patent

active

054753015

ABSTRACT:
A DC current sensor using a continuous annularly-shaped detecting core of soft magnetic material; a continuous annularly-shaped exciting core of soft magnetic material intersecting with the detecting core perpendicular to the plane thereof; respective detecting and exciting coils wound respectively around the detecting and the exciting cores; an AC excitation of a given frequency applied to the exciting coil to saturate the detecting core; a wire conducting DC current to be detected extending through the detecting core to establish a magnetic flux therein; and a detector connected to the detecting coil for detecting the magnetic flux modulated by the AC excitation to detect the DC current flowing in the wire.

REFERENCES:
patent: 5296802 (1994-03-01), Beranger et al.

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