CURRENT SENSOR

摘要

A current sensor includes a magnetic core with a gap in part of a circumference and formed in an annular shape, and a magneto-electric conversion element arranged in the gap, the magneto-electric conversion element detecting magnetic fluxes changing with a measurement target current passing through a hollow part of the magnetic core. The magnetic core is formed by laminating a plurality of materials in a direction except a circumferential direction, and is formed so that magnetic flux densities of two points in an area defined in advance as an area where a sensing part of the magneto-electric conversion element can exist (hereinafter referred to as a sensing part existence area) approximate to each other, the two points being away from each other with a distance in a laminating direction being a length of the sensing part in the laminating direction.

主权项

1. A current sensor comprising:
a magnetic core with a gap in part of a circumference and formed in an annular shape; and a magneto-electric conversion element arranged in the gap, the magneto-electric conversion element detecting magnetic fluxes changing with a measurement target current passing through a hollow part of the magnetic core; wherein the magnetic core is formed by laminating a plurality of materials in a direction except a circumferential direction, and is formed so that magnetic flux densities of two points in a sensing part existence area defined in advance as an area where a sensing part of the magneto-electric conversion element can exist approximate to each other, the two points being away from each other with a distance in a laminating direction being a length of the sensing part in the laminating direction.