Noise filter

Details Noise filter Noise filter

2011-06-14

2011-06-14

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

C333S172000, C333S175000, C333S185000

Reexamination Certificate

active

07961065

ABSTRACT:
The invention can provide a miniaturized noise filter. The noise filter for reducing noise comprises a coil with a conductive wire (2) wound around a core (1); a case (6) formed of an insulating material receiving the coil; a bracket (8) of a magnetic material forming a flux path of magnetic flux generated from the coil, which places the case thereon, which has a pair of end plates (12a,12b) disposed opposite to both ends of the core of the coil respectively through a gap of a predetermined distance, and which has a bottom plate (8a) disposed between the pair of the end plates; and an input/output terminal (3a,3b) for the coil.

REFERENCES:
patent: 3601734 (1971-08-01), Chesney
patent: 6157283 (2000-12-01), Tsunemi
patent: 6535095 (2003-03-01), Aoki et al.
patent: 6680664 (2004-01-01), Fan
patent: 2008/0084254 (2008-04-01), Takahashi et al.
patent: 57-190306 (1982-11-01), None
patent: 07-272942 (1995-10-01), None
patent: 09-213528 (1997-08-01), None
International Search Report completed Sep. 22, 2006.

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