Circuit elements dependent on core inductance and fabrication th

Details Circuit elements dependent on core inductance and fabrication th Circuit elements dependent on core inductance and fabrication th

1992-02-14

1993-10-26

Echols, P. W.

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

336223, 336229, 29412, 296021, 29606, H01F 500

Patent

active

052570002

ABSTRACT:
Magnetic circuit elements, e.g. for inclusion on circuit boards including one or more windings about a toroidal core are produced by joinder of mating sheets, one or both recessed to hold the core, and each containing partial windings. Joinder is by use of an anisotropically conducting adhesive layer. The layer is applied as an uncured thermosetting adhesive containing spherical conducting particles of such size and distribution as to statistically result in electrical completion of windings while avoiding turn-to-turn shorting.

REFERENCES:
patent: 3765082 (1973-10-01), Zyetz
patent: 4117588 (1978-10-01), Johnson
patent: 4342976 (1982-08-01), Ryser
patent: 4536733 (1985-08-01), Shelly et al.
patent: 4755783 (1988-07-01), Fleischer et al.
patent: 4975671 (1990-12-01), Dirks
patent: 5055816 (1991-10-01), Altman et al.
Microelectronics Packaging Handbook, R. Tummala, E. J. Rymaszewski, eds., Van Nostrand Reinhold, New York, pp. 885-909 (1989).
Printed Circuits Handbook, C. F. Coombs, Jr., ed., 3rd ed., chapters 12 and 13, McGraw-Hill, New York (1988).
Handbook of Flexible Circuits, Ken Gilleo, ed., Van Nostrand Reinhold, New York (1992).

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