Inductor devices – With outer casing or housing – Internal inductor support
Patent
1997-07-25
1998-10-13
Gellner, Michael L.
Inductor devices
With outer casing or housing
Internal inductor support
336 90, 336175, 336176, 336178, 333 1, 333 12, H01F 2702, H01F 1706, H01P 500
Patent
active
058218459
ABSTRACT:
Proposed is a reduction of variance in electromagnetic noise eliminating effect with signal conductors arranged in a flat cable to which an electromagnetic noise absorber is attached. The electromagnetic noise absorber is provided with a plate magnetic body and a U-shaped magnetic body. Since the width of the plate magnetic body is smaller than the interval between the side walls of the U-shaped magnetic body, the plate magnetic body can be accommodated in the U-shaped magnetic body, with a clearance formed between the end portions of the plate magnetic body and the side walls of the U-shaped magnetic body. The impedance in the vicinity of the clearance is decreased, and the difference in impedance between the end portions and the middle portion of the electromagnetic noise absorber is decreased. Therefore, a variance in the electromagnetic noise eliminating effect with signal conductors of the flat cable is made small.
REFERENCES:
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patent: D310020 (1990-08-01), Fujioka
patent: 4825185 (1989-04-01), Matsui
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patent: 4885559 (1989-12-01), Nakano
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patent: 4983932 (1991-01-01), Kitagawa
patent: 5264814 (1993-11-01), Yamazaki et al.
patent: 5343184 (1994-08-01), Kitagawa
Gellner Michael L.
Kitigawa Industries Co., Ltd.
Mai Anh
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