Noise suppressing circuit

Details Noise suppressing circuit Noise suppressing circuit

2008-05-27

2008-05-27

Nguyen, Phung T. (Department: 2612)

Communications: electrical

Systems

Selsyn type

C340S315000

Reexamination Certificate

active

07378943

ABSTRACT:
A noise suppressing circuit (1) suppresses noise emerging from an electronic apparatus (2) and propagating through conductive lines (3aand3b). The noise suppressing circuit (1) comprises a low-band noise reducing circuit (10) and a high-band noise reducing circuit (80). The low-band noise reducing circuit (10) is connected to the electronic apparatus (2) through the conductive lines (3aand3b). The high-band noise reducing circuit (80) is cascade-connected to the low-band noise reducing circuit (10) and connected to conductive lines (4aand4b) of a power line (4). The high-band noise reducing circuit (80) comprises: a detection circuit for detecting common mode noise propagating through the conductive lines (3aand3b); a phase-inverted signal generating circuit for generating a phase-inverted signal that has a phase opposite to the phase of the noise detected by the detection circuit; and an injection circuit for injecting the phase-inverted signal generated by the phase-inverted signal generating circuit into the conductive lines (3aand3b).

REFERENCES:
patent: 4475214 (1984-10-01), Gutleber
patent: 4783817 (1988-11-01), Hamada et al.
patent: 6313738 (2001-11-01), Wynn
patent: 6317031 (2001-11-01), Rickard
patent: 6329905 (2001-12-01), Cunningham
patent: 6373674 (2002-04-01), Sugiura et al.
patent: 6441723 (2002-08-01), Mansfield et al.
patent: 2002/0063474 (2002-05-01), Wasaki et al.
patent: 53-54447 (1978-05-01), None
patent: 63-688 (1988-01-01), None
patent: 1-105215 (1989-07-01), None
patent: 02-078327 (1990-03-01), None
patent: 3-3829 (1991-01-01), None
patent: 03-296313 (1991-12-01), None
patent: 04-362805 (1992-12-01), None
patent: 05-153782 (1993-06-01), None
patent: 07-115339 (1995-05-01), None
patent: 08-032394 (1996-02-01), None
patent: 09-116367 (1997-05-01), None
patent: 10-262364 (1998-09-01), None
patent: 10-303674 (1998-11-01), None
patent: 2000-323951 (2000-11-01), None
patent: 2002-204189 (2002-07-01), None
patent: WO 02/37674 (2002-05-01), None

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