Title:
CHOKE COIL
Document Type and Number:
Japanese Patent JP3064853
Kind Code:
B2
Abstract:
PURPOSE: To obtain a choke coil having a sufficient noise elimination effect for common mode noise and normal mode noise.
CONSTITUTION: A choke coil consists of a bobbin 1, a pair of coil windings 4 and 5 wound around the bobbin 1, and a magnetic cores 6 and 7 inserted into a cylindrical body part 12 of the bobbin 1. The bobbin 1 consists of a body 11 and a lid 17, each having magnetic cores 16 and 17, respectively. The magnetic cores 16 and 18 constitute a closed magnetic path for orbiting around the coil winding 4 at an upper half and a closed magnetic path for orbiting around the coil winding 5 at a lower half.
Inventors:
Tatsuyuki Yamada
Koichi Yamaguchi
Takaaki Ohi
Iwao Fukutani
Koichi Yamaguchi
Takaaki Ohi
Iwao Fukutani
Application Number:
JP1715995A
Publication Date:
July 12, 2000
Filing Date:
February 03, 1995
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H01F17/06; H01F17/04; H01F27/24; H01F27/32; H01F27/33; H01F27/36; H01F37/00; (IPC1-7): H01F17/06; H01F27/24; H01F27/32; H01F37/00
Domestic Patent References:
| JP7106140A |
Attorney, Agent or Firm:
Takekazu Morishita