公开(公告)号：US20190252106A1

公开(公告)日：2019-08-15

申请号：US16393374

申请日：2019-04-24

Applicant: CKD Corporation

Inventor： Akihiro Ito ,  Masayuki Kouketsu ,  Masatoki Ito ,  Takashi Hosono

IPC: H01F27/08 ,  H03H7/01 ,  H01F27/40 ,  H03H3/00 ,  H01F41/06 ,  H05K7/20

CPC classification number: H01F27/08 ,  H01F27/00 ,  H01F27/40 ,  H01F41/06 ,  H03H3/00 ,  H03H7/01 ,  H03H7/0115 ,  H05K7/20145 ,  H05K7/20254

Abstract: A low pass filter including: a coil that includes a band-shaped conductor and is wound a plurality of times around an axis; a capacitor that has one terminal connected to the conductor and the other terminal connected to ground; a cooling plate in contact with an end surface of the wound coil with respect to a direction of the axis; and a ceramic layer that has a flat surface and is disposed on the end surface of the would coil facing the direction of the axis, wherein the ceramic layer contacts the cooling plate, and the cooling plate includes a flow path through which water flows.