Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Patent
1995-07-20
1997-03-18
Kozma, Thomas J.
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
336223, 336232, H01F 2730
Patent
active
056126603
ABSTRACT:
In an inductance element which is built in a printed circuit board by forming at least two upper and lower layers of conductive patterns in such a way as to sandwich an insulator layer of the printed circuit board in between them and by interconnecting them by means of through holes (via holes), the inductance element is formed, within a plane orthogonally intersecting the surface of the printed circuit board, in a shape of a rectangularly spiral conductor having at its center an axis parallel to the surface of the printed circuit board. This arrangement enables the inductance element to be formed at the same time as when other conductive patterns of the printed circuit board are formed.
REFERENCES:
patent: 4975671 (1990-12-01), Dirks
patent: 5191699 (1993-03-01), Ganslmeier et al.
Canon Kabushiki Kaisha
Kozma Thomas J.
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