Minebea Mitsumi Inc.

Takeshi Ohara

Toshiaki Seima

Koichi Tamai

Haruomi Morohashi

A circuit board for a motor unit equipped with a motor includes a substrate having a main surface being one of a pair of surfaces opposed to each other, and a back surface being another of the pair of surfaces, a magnetic detection element disposed in a predetermined region on an outer periphery side of the substrate on the main surface, and configured to output a detection signal in accordance with a position of a rotor of the motor, and a metal member formed between the outer periphery of the substrate and the magnetic detection element in the predetermined region on the main surface, and configured to receive a supplied ground voltage.

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Fukuroi, Japan

Takeshi Ohara