Title:
NORMAL MODE NOISE SUPPRESSING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2004/095697
Kind Code:
A1
Abstract:
A normal mode noise suppressing circuit has a noise suppressing section (10) provided to conductor wires (3, 4) and a capacitor (31) one end of which is connected to the conductor wire (3) and the other of which is connected to the conductor wire (4). The suppressing section (10) comprises a winding (15a) inserted into the conductor wire (3), a winding (15b) connected to the winding (15a) through a magnetic core (15c), an injection signal transmission line (19), a capacitor (16), and an inductive element (18). One end of the injection signal transmission line (19) is connected to the conductor wire (3), and the other is connected to the conductor wire (4). The winding (15b) and the capacitor (16) are inserted at a point of the injection signal transmission line (19). The inductive element (18) is inserted in the conductor wire (3) at a point between the connection node between the injection signal transmission line (19) and the conductor wire (3) and the winding (15a).
Inventors:
SAITOH YOSHIHIRO (JP)
WASAKI MASARU DI
WASAKI MASARU DI
Application Number:
PCT/JP2004/005883
Publication Date:
November 04, 2004
Filing Date:
April 23, 2004
Export Citation:
Assignee:
TDK CORP (JP)
WASAKI HITOMI HF (JP)
SAITOH YOSHIHIRO (JP)
WASAKI HITOMI HF (JP)
SAITOH YOSHIHIRO (JP)
International Classes:
H03H1/00; H03H7/09; H04B3/28; (IPC1-7): H03H7/09
Foreign References:
| JP2002204189A | 2002-07-19 | |||
| JPS578247Y2 | 1982-02-17 | |||
| JPH03186007A | 1991-08-14 | |||
| JPH02241233A | 1990-09-25 | |||
| JPH02206360A | 1990-08-16 |
Attorney, Agent or Firm:
Hoshimiya, Katsumi (10th Floor 15-7, Shinjuku 5-chom, Shinjuku-ku Tokyo 22, JP)
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