Title:
NOISE FILTER
Document Type and Number:
Japanese Patent JP3163853
Kind Code:
B2
Abstract:
PURPOSE: To obtain an inexpensive noise filter of such structure that noise attenuation performance can be prevented from lowering even when a current with high peak value flows on the noise filter, and high noise attenuation performance can be kept at lower frequencies between 10kHz-100kHz, and the noise attenuation performance can be prevented from lowering even at the frequency higher than 100kHz, and also, leakage current can be reduced, and a noise generated from the diode of electronic equipment can be reduced, and assembling can be easily automatized.
CONSTITUTION: Capacitors C1, C2, and C3 are connected among input terminals 1, 2, and 3, and capacitors C4, C5, and C6 among output terminals 4, 5, and 6, and capacitors C7, C8, and C9 among a ground terminal and each output terminal. A common mode choke coil 26 in which coils 7, 8, and 9 are wound across a core 17 that is an iron group high permeable magnetic material and a ferrite core 18 formed as the same core is connected between the input terminal and the output terminal.
Inventors:
Yoshihide Kanehara
Application Number:
JP18678593A
Publication Date:
May 08, 2001
Filing Date:
June 30, 1993
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02J3/01; H01F37/00; H02M1/12; H03H7/09; H03H11/04; H04B15/02; H05K9/00; (IPC1-7): H02J3/01; H01F37/00; H03H7/09
Domestic Patent References:
| JP62283612A |
Attorney, Agent or Firm:
Kaneo Miyata (1 person outside)