DC current sensor

Details DC current sensor DC current sensor

1995-03-13

1996-01-23

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

324117R, 324 96, G01R 104, G01R 3100

Patent

active

054867568

ABSTRACT:
A DC current sensor with an exciting core of soft magnetic material and formed with a pair of tubular bodies, each tubular body being positioned in parallel with the other to provide therebetween a space, through which passes a wire conducting a current to be detected; a detecting core formed with the side faces of a pair of tubular bodies and two plate-like members of soft magnetic material, each of which connecting integrally with each of the inside edges thereof near an opening of the tubular bodies to form a rectangular frame-shaped member as a whole; exciting coils, each of which magnetically energizing the exciting core in the direction perpendicular to the plane of the detecting core; detecting coils, each of which being wound around the detecting core; and applying an alternating current to the exciting coils to periodically and magnetically saturate the rectangular-shaped portions of the detecting core and exciting core, energizing the exciting coils to modulate a magnetic flux produced in the detecting core corresponding to the DC current flowing through the wire.

REFERENCES:
patent: 3681691 (1970-09-01), Mercier
patent: 4205266 (1980-03-01), Lichtenberg
patent: 5204622 (1993-04-01), McCaslin et al.

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