US 11,885,835 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 Jul. 18, 2022, as Appl. No. 17/866,859.
Application 17/866,859 is a continuation of application No. 17/187,966, filed on Mar. 1, 2021, granted, now 11,422,166.
Claims priority of application No. 2020-048089 (JP), filed on Mar. 18, 2020.
Prior Publication US 2022/0349921 A1, Nov. 3, 2022
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)] 21 Claims
OG exemplary drawing
 
1. A magnetic field detection apparatus comprising:
a magnetoresistive effect element, and
a coil including a first tier pan 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 app lied 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,
the second tier part includes a plurality of second conductors each extending in the third axis direction, the plurality of second conductors being arranged in the second axis direction and coupled in parallel to each other, and
the plurality of first conductors is larger in number than the plurality of second conductors.