Lamination type inductor

Details Lamination type inductor Lamination type inductor

1989-12-26

1991-07-16

Kozma, Thomas J.

Inductor devices

Core forms casing

336172, 336200, 336225, 336233, H01F 1502, H01F 2730

Patent

active

050328158

ABSTRACT:
A lamination type inductor has a plurality of ferrite sheets assembled one above the other and laminated together, the uppermost and lowermost sheets being end sheets having lead-out conductor patterns thereon and conductor patterns on the surfaces of the end sheets which face each other which are connected to the lead-out conductor patterns and which are for connection to conductor patterns on intermediate sheets, and a plurality of intermediate ferrite sheets, each having a conductor pattern on one surface thereof which corresponds to a 0.25 turn of an inductor coil and a conductor pattern on the other surface which corresponds to a 0.5 turn of an inductor coil, each ferrite sheet having an opening therethrough through which the conductor patterns of the 0.25 and 0.5 turn are electrically connected to form a 0.75 turn of an inductor coil on each ferrite sheet. The conductor patterns on the successive intermediate sheets are connected to each other for forming an inductor coil having a number of turns which is a multiple of 0.75, and the conductor patterns on the upper surface of the uppermost of the plurality of intermediate ferrite sheets and the lower surface of the lowermost of the intermediate ferrite sheets are electrically connected to the conductor patterns on the surfaces of the end sheets which face each other for forming with the lastmentioned conductor pattern a complete inductor coil.

REFERENCES:
patent: 3732514 (1973-05-01), Sato
patent: 3765082 (1973-10-01), Zyetz
patent: 3812442 (1974-05-01), Muckelroy
patent: 4543553 (1985-09-01), Mandai et al.
patent: 4689594 (1987-08-01), Kawabata et al.

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