Common-mode choking coil

Details Common-mode choking coil Common-mode choking coil

1989-11-17

1991-06-11

Kozma, Thomas J.

Inductor devices

With coil capacitance modifying means

336181, 336184, 336192, 336210, H01F 1514, H01F 2726

Patent

active

050235850

ABSTRACT:
A common-mode choking coil comprises a closed magnetic path core which is formed, for example, by combining two U-shaped cores. Two coils wound in opposite respective directions are mounted on two legs of the closed magnetic path core. These coils are formed by single-layer winding. That is a conductor wire is wound in only one layer, for example, around a bobbin. Then, the bobbins whereon the conductor wire is wound are mounted on the two legs of the closed magnetic path core. For the conductor wire used for the coil, a material having a spring property may be used. Utilizing this spring property of the coil, the closed magnetic path core can be held together by the coil, whereby the two U-shaped cores can be combined. Also, the two coils are identified by colors according to the winding direction of the respective conductor wires.

REFERENCES:
patent: 2375593 (1945-05-01), Sontheimer et al.
patent: 3353132 (1967-11-01), D'Entremont
patent: 3541424 (1970-11-01), Tada et al.
patent: 3590329 (1971-06-01), Krepps, Jr.
patent: 3629761 (1971-12-01), Lundgren et al.
patent: 4668930 (1987-05-01), Francis, Jr.
patent: 4763093 (1988-08-01), Cirkel et al.

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