US 12,379,401 B2
Magnetic field detection apparatus and current detection apparatus
Takafumi Kobayashi, Tokyo (JP); Norikazu Ota, Tokyo (JP); and Kenzo Makino, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Dec. 13, 2023, as Appl. No. 18/538,546.
Application 18/538,546 is a continuation of application No. 17/866,859, filed on Jul. 18, 2022, granted, now 11,885,835.
Application 17/866,859 is a continuation of application No. 17/187,966, filed on Mar. 1, 2021, granted, now 11,422,166, issued on Aug. 23, 2022.
Claims priority of application No. 2020-048089 (JP), filed on Mar. 18, 2020.
Prior Publication US 2024/0110951 A1, Apr. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 15/20 (2006.01); G01R 19/00 (2006.01); G01R 33/09 (2006.01)
CPC G01R 15/205 (2013.01) [G01R 19/0092 (2013.01); G01R 33/09 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A magnetic field detection apparatus comprising:
a magnetoresistive effect element; and
a coil including a first tier part and a second tier part opposed to each other in a first axis direction, with the magnetoresistive effect element being interposed between the first tier part and the second tier part, the coil being configured to be supplied with a current and thereby configured to generate an induction magnetic field to be applied to the magnetoresistive effect element in a second axis direction, wherein
the first tier part includes a plurality of first conductors each extending in a third axis direction, the plurality of first conductors being arranged in the second axis direction and coupled in parallel to each other, and
the second tier part includes a second conductor extending in the third axis direction.