Patent ID: 7026905

Claim:
A controllable inductor, comprising: first and second coaxial and concentric magnetic pipe elements comprising anisotropic material, wherein said elements are connected to one another at both ends by means of magnetic end couplers; a first winding wound around both said magnetic pipe elements; and a second winding wound around at least one of said magnetic pipe elements, wherein a winding axis for the first winding is perpendicular to an axis of at least one of the magnetic pipe elements, wherein a winding axis of the second winding coincides with the axis, wherein, when energized, the first winding generates a magnetic field in a first direction that coincides to a direction of a first magnetic permeability, wherein, when energized, the second winding generates a magnetic field in a second direction that coincides to a direction of a second magnetic permeability, and wherein the first magnetic permeability is substantially higher than the second magnetic permeability.