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US 5,534,837 AGranted
Orthogonal-field electrically variable magnetic device
AssigneeRockwell International Corporation
InventorRandy L. Brandt
Life of this patent
Estimating the term…
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.
Claims16
An electro-magnetic device comprising:
- a low-profile magnetically permeable substrate;
- a first set of windings, magnetically coupled to the substrate having a first resultant force with respect to an alternating current input signal;
- and,
- a second set of windings, magnetically coupled to the substrate, having a second resultant force with respect to a direct current input signal that is orthogonal in direction to the first resultant force;
- wherein the orthogonal resultant forces alters the permeability of the device, extending its operating range prior to saturation.
2 more elements
An electro-magnetic device comprising:
- a low-profile magnetically permeable substrate;
- a first set of windings, magnetically coupled to the substrate having a first resultant force with respect to an alternating current input signal;
- a second set of windings, magnetically coupled to the substrate, having a second resultant force with respect to a direct current input signal that is orthogonal in direction to the first resultant force;
- and
- a magnet of predetermined polarity coupled to or in close proximity to the substrate, said magnet also producing resultant forces orthogonal to the first resultant force;
- wherein the orthogonal resultant forces alters the permeability of the device, extending its operating range prior to saturation.
3 more elements
An electro-magnetic device comprising:
- a low-profile magnetically permeable substrate;
- a first set of windings, magnetically coupled to the substrate having a first resultant force with respect to an alternating current input signal;
- and,
- a magnet of predetermined polarity coupled to or in close proximity to the substrate, having a second resultant force with respect to a direct current input signal that is orthogonal in direction to the first resultant force;
- wherein the orthogonal resultant forces alters the permeability of the device, extending its operating range prior to saturation.
2 more elements
Dependencies are inferred from the claim text.