Orthogonal-field electrically variable magnetic device

Details Orthogonal-field electrically variable magnetic device Orthogonal-field electrically variable magnetic device

1994-07-28

1996-07-09

Picard, Leo P.

Inductor devices

Inductive regulators with no relatively moving parts

336 12, 336 83, H01F 2108

Patent

active

055348378

ABSTRACT:
An electro-magnetic device for use in applications requiring low-profile components. The device includes a magnetic substrate with a scheme of through-holes in association with a first and second winding, plated or wired, integral to the substrate and wound orthogonal to each other. The first winding comprises the AC inductor/transformer permeability. The second winding in association with an applied DC bias current causes the permeability to vary over a wide controlled operating range.

REFERENCES:
patent: 3848209 (1974-11-01), Lee et al.
patent: 4129820 (1978-12-01), Brock
patent: 4665357 (1987-05-01), Herbert
patent: 5450052 (1995-09-01), Goldberg et al.
S. Kirli, K. Ngo, W. Polivka & M. Walters, "Inductance Modeling For A Mode-2 Perforated-Plate Matrix Inductor/Transformer" IEEE 93CH3293-8, pp. 1130-1136.
U.S. Patent Application S/N 08/169,083, Filed Dec. 1993, Goldberg et al, "Magnetically Variable Inductor For High Power Audio and Radio Frequency Applications" Assigned to Rockwell International Corporation.

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