Johnson Electric International Ag

Johnson Electric S.a.

Chi Wai Lai

Qing Bin Luo

Wen Ming Wu

Xiao Lin Ren

Xin Peng Wei

Gui Hong Tian

Bo Hu

Hong Wei Zhang

Ying Song Ye

Hong Jiang Zhao

Zhao Sen Meng

Gong Wu Xu

Xia Han

Xian Xue Ao

Bei Bei He

A printed circuit board includes a body, a first conductive pattern layer disposed on a first surface of the body, and a second conductive pattern layer disposed on a second surface of the body. The first conductive pattern layer and the second conductive pattern layer form a capacitor. The present disclosure further provides an motor having the printed circuit board.

Printed circuit board and motor

A brush assembly includes a circuit board, at least two brushes, power connecting terminals for connecting with an external power supply, and a power supply branch circuit connected in series between a corresponding one of the power connecting terminals and a corresponding one of the brushes. The brush assembly further comprises an EMI suppressor connected between the power supply branch circuit and ground. The EMI suppressor is an axial capacitor formed by a conductor core, a cover, and a filling medium. The cover is attached around the conductor core, and the filling medium is filled between the conductor core and the cover. A motor utilizing the brush assembly is also provided.

Brush assembly and motor using same

An end cap assembly for an electric motor has a brush assembly, a circuit board, an inductor and a grounded metal element. The brush assembly has a plurality of brushes. The circuit board is fixed relative to the brush assembly. The inductor is electrically connected to the circuit board. The grounded metal element is positioned between the brushes and the inductor to absorb high frequency electromagnetic radiation transmitted from the brushes to the inductor.

End cap assembly for suppressing electromagnetic interference and motor having the same

A commutator has a conductive layer, a segment layer and an insulating layer separating the conductive layer and the segment layer. The segment layer includes multiple commutator segments. A mounting hole is defined along an axis of the commutator passing through the conductive layer. The three-layer structure of the commutator forms a capacitor having an increased confronting area and reduced inter-plate distance. The capacitor thus has a greater capacitance and hence greater EMI absorbing capability, making it possible to reduce EMI emissions without additional EMI reduction components outside the commutator. A rotor and a motor employing the commutator are also disclosed.

Commutator of an electric motor

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Hong Kong, China

Chi Wai Lai