Patent ID: 8378670
Filing Date: 2013-02-19
Classification: G01R

Abstract:
1. A magneto-impedance element comprising: a magnetic sensitive member having the form of a line, whose electromagnetic characteristics vary depending on a magnetic field acting from the outside, and in which a pulse current flows from one end portion thereof to the other end portion in an axial direction; a conductive layer arranged on an insulating layer provided on an outer surface of the magnetic sensitive member; a connection portion arranged at the other end portion in an axial direction of the magnetic sensitive member to electrically connect the magnetic sensitive member and the conductive layer to each other; and a detection coil wounded around the conductive layer unidirectionally to output an induced voltage corresponding to an intensity of the external magnetic field acting on the magnetic sensitive member when the pulse current flows in the magnetic sensitive member, wherein a direction of the pulse current flowing in the magnetic sensitive member and a direction of the pulse current flowing in the conductive layer are opposite to each other.