Patent ID: 11892477
Assignee: TDK CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A current sensor, comprising:
a magneto-resistive effect element which is arranged near a current line, to which a signal magnetic field is applied, the signal magnetic field being induced by a current that flows in the current line, and which generates a magneto-resistive change in accordance with a change of the signal magnetic field;
cancelling magnetic field generating means that is provided near the magneto-resistive effect element and that generates a cancelling magnetic field that cancels the signal magnetic field;
a first soft magnetic body that is opposite to the current line with the magneto-resistive effect element interposed therebetween; and
a pair of second soft magnetic bodies that are provided on both sides of the magneto-resistive effect element with regard to a magnetization detecting direction of the magneto-resistive effect element, wherein
a distance in the magnetization detecting direction between a center of the first soft magnetic body and a part of each second soft magnetic body that is most distant from the center of the first soft magnetic body is smaller than a distance in the magnetization detecting direction between the center of the first soft magnetic body and each end of the first soft magnetic body.