Choke coil for suppressing common-mode noise and normal-mode noi

Details Choke coil for suppressing common-mode noise and normal-mode noi Choke coil for suppressing common-mode noise and normal-mode noi

1997-06-03

1998-10-20

Kozma, Thomas J.

Inductor devices

Plural part core

336215, 336233, H01F 2724

Patent

active

058252720

ABSTRACT:
A choke coil is disclosed which exhibits sufficient capability in suppressing both common-mode noise and normal-mode noise with a small number of parts. A bobbin is formed of a rod and flanges provided for the rod. A pair of windings are reeled around the rod. Further, one side of a hollow-rectangular integral-type magnetic core is inserted into a hole formed in the rod of the bobbin. The heights of the flange of the bobbin are set as L2 in the upward direction, while the heights of the flange of the bobbin are determined as L1 in the downward direction (as illustrated) with L1>L2, i.e., the heights of the flange are varied in the directions along the outer peripheral surfaces of the flange.

REFERENCES:
patent: 5506559 (1996-04-01), Yamaguchi

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