Title:
コモンモードフィルタ
Document Type and Number:
Japanese Patent JP4203949
Kind Code:
B2
Abstract:
A common-mode filter with a drum type core including a core portion and flange portions. Electrodes are provided on the flange portions and a pair of wires are wound on the core portion. The wound pair of wires have ends connected to respective ones of the electrodes. Each of the flange portions has a groove between corresponding two of the electrodes and a separation protrusion for separating the groove into two lead-out groove portions. The pair of wires are wound on the core portion in such a distributed winding manner that an inter-wire distance between the pair of wires and a winding pitch between adjacent turns in each of the pair of wires are provided. The wires are one-by-one led out through the lead-out groove portions while separated by the separation protrusions so that the ends of the pair of wires are connected to respective electrodes.
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Inventors:
Kan Suzuki
Toshihiro Kuroshima
Tomonari Toshio
Katsumi Saito
Katsuyuki Sasaki
Rei Sato
Toshihiro Kuroshima
Tomonari Toshio
Katsumi Saito
Katsuyuki Sasaki
Rei Sato
Application Number:
JP2003100118A
Publication Date:
January 07, 2009
Filing Date:
April 03, 2003
Export Citation:
Assignee:
tdk Corporation
International Classes:
H01F1/34; H01F27/29; H01F27/28; H03H1/00; H03H7/09; H01F17/04; H01F41/06; H01F41/10
Domestic Patent References:
| JP2003077730A | ||||
| JP2000277335A | ||||
| JP9063850A | ||||
| JP2002329618A | ||||
| JP11067521A | ||||
| JP2002075722A |
Attorney, Agent or Firm:
Takashi Murai