Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Patent
1982-07-12
1985-01-15
Pellinen, A. D.
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
H01F 500
Patent
active
044941005
ABSTRACT:
A planar inductance element includes a generally flat substrate of electrically insulating material. First and second substantially flat spiral coils, having respective inner and outer ends, are disposed on opposite sides of the substrate. The coils are spiraled in the same direction as viewed from one side of the substrate with one coil spiraling out and one spiraling in. The inner ends of the coils are joined through the substrate to couple the coils in series. The outer ends of the coils provide terminals for the inductor. The means/methods are disclosed for discretely and progressively trimming the inductor.
REFERENCES:
patent: 3161850 (1964-12-01), Klug
patent: 3436687 (1969-04-01), Andrews, Jr. et al.
patent: 3484697 (1969-12-01), Abend
patent: 3504276 (1970-03-01), Proctor et al.
patent: 3539309 (1970-10-01), Helgeland
patent: 3736543 (1973-05-01), Lademann, et al.
patent: 4012703 (1977-03-01), Chamberlayne
IBM Technical Disclosure Bulletin, vol. 19, No. 10, Mar. 1977, "Double Flat Coil for Bubble Memory Package", K. J. Braun & D. G. McBride.
Nejdl Charles W.
Stengel Robert E.
Gillman James W.
Miller Jerry A.
Motorola Inc.
Pellinen A. D.
Roney Edward M.
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