Transformer

Details Transformer Transformer

1992-09-21

1997-01-28

Picard, Leo P.

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

336 83, H01F 500

Patent

active

055981356

ABSTRACT:
A transformer contains a multi-layered coil block which is formed by laminating and sintering sheets having conduction patterns. External electrodes which are connected to the conduction patterns are formed at the edges of the multi-layered coil block. A hole is made at the center of the multi-layered coil block, and a core is inserted into the hole. For the sheet material, a ceramic material containing glass is used. For the ceramic material, for example, an alumina ceramic material or dielectric ceramic material is used. Also, for the glass, for example, lead glass, borosilicate zinc glass, or borosilicate lead glass is used.

REFERENCES:
patent: 3659240 (1972-04-01), Learned et al.
patent: 3833872 (1974-09-01), Marcus et al.
patent: 4267457 (1981-05-01), Nakagawa
patent: 4536435 (1985-08-01), Utsumi et al.
patent: 5010314 (1991-04-01), Estrov
patent: 5015972 (1991-05-01), Cygan et al.
patent: 5029043 (1991-07-01), Kitahara et al.
Power Electronics "Planar Magnetics Lower Profile, Improve Converter Efficiency"; May 1989; pp. 16-26.

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