US 12,467,956 B2
Magnetic sensor
Shuichi Okawa, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Appl. No. 18/264,304
Filed by TDK Corporation, Tokyo (JP)
PCT Filed Jan. 28, 2022, PCT No. PCT/JP2022/003326
§ 371(c)(1), (2) Date Aug. 4, 2023,
PCT Pub. No. WO2022/176570, PCT Pub. Date Aug. 25, 2022.
Claims priority of application No. 2021-023597 (JP), filed on Feb. 17, 2021.
Prior Publication US 2024/0094262 A1, Mar. 21, 2024
Int. Cl. G01R 33/00 (2006.01); G01R 15/18 (2006.01); G01R 19/00 (2006.01)
CPC G01R 15/18 (2013.01) [G01R 19/0092 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A magnetic sensor comprising:
a sensor chip having first and second magnetic layers magnetically coupled to each other through a magnetic gap and a magnetic sensing element disposed on a magnetic path formed by the magnetic gap;
a first external magnetic member magnetically coupled to the first magnetic layer;
a second external magnetic member magnetically coupled to the second magnetic layer; and
a first measuring current coil wound around the first external magnetic member and through which a current for generating a magnetic field to be measured flows.