The application provides an integrated inductor and a power module. The integrated inductor includes a magnetic core, comprising: two winding columns disposed in parallel, each provided with an air gap; a first cover plate disposed under the two winding columns; a second cover plate disposed above the two winding columns, and opposite to the first cover plate; and a common column connected between the first and second cover plates, and disposed on one or both sides of the two winding columns; and two windings are respectively wound on the two winding columns, wherein a line frequency current component of a current flowing through each of the two windings surrounds the winding columns in the same direction, a phase of high-frequency current component of the current flowing through each of the two windings differs by 180°, and a coupling coefficient between the two windings is less than 0.1.

A power inductor includes a housing and a magnetic core disposed in the housing. The core includes a first segment and a second segment spaced apart from each other to define a gap. The first and second segments are supported in the housing such that they are movable relative to each other to increase and decrease the size of the gap. A passive actuator is disposed in the housing and is configured to move the second segment relative to the first segment to increase and decrease the size of the gap. The passive actuator includes a shape-memory alloy configured to expand as temperature of the inductor increases to urge the first and second segments apart to increase the gap and to contract as the temperature decreases so that the first and second segments move towards each other to decrease the gap.

A passive, current dependent inductivity (1) comprises a magnetic core (2), windings (3) and at least one bank air gap (4). A saturation region (5) made of magnetic material is arranged between the bank air gap (4) and the windings (3). A magnetic flux path (6) bifurcates into a first path (61) passing through the saturation region (5) and into a second path (62) passing through the bank air gap (4) and bypassing the saturation region (5). The magnetic resistance of the first path (61) is lower than the magnetic resistance of the second path (62) for winding currents below a first saturation current (7a) and whereby the magnetic resistance of the second path (62) is lower than the magnetic resistance of the first path (61) for winding currents above the first saturation current (7a) due to saturation of the saturation region.

A system is provided for transferring power between a stator and a rotor of an excitation system. The stator and the rotor may form part of a rotary transformer that includes a primary winding and a secondary winding, where power is transferred from the primary winding to the secondary winding or conversely from the secondary winding to the primary winding.

An integrated multi-phase inductor component assembly includes a single piece core or a multi-piece magnetic core that may be easily assembled with multiple coils arranged in a mirror-image relationship in the magnetic core. The coils include vertically extending, planar main winding sections extending in spaced apart but parallel vertical planes and horizontal sections extending in coplanar relationship on top and bottom sides of the magnetic core for surface mounting to a circuit board or through hole mounting to another circuit board or another component in power supply circuitry for an electronic device.

An inductor includes discrete magnetic core pieces fabricated from different magnetic materials having different magnetic properties. An inverted U-section conductive coil includes a top section and first and second legs to establish a surface mount connection to a circuit board, and the discrete magnetic core pieces are assembled around the inverted U-section conductive coil. The first and second discrete magnetic core pieces are operable to reach magnetic saturation at respectively different current loads applied to the coil when the circuit board is energized, imparting multiple steps of inductance rolloff response to a range of current loads.

The current transformer includes a magnetic circuit made of magnetic material that is intended to be placed around a primary conductor, and a secondary winding that is wound onto a portion of the magnetic circuit in order to deliver a secondary current to processing circuits. In this current transformer the magnetic circuit includes at least one device for varying the magnetization of a portion of the magnetic circuit according to the temperature in order to limit or to decrease the magnetic flux in the magnetic circuit when the temperature of the magnetic circuit increases. The protection device and the electrical circuit breaker include such a transformer.

A filter assembly includes a first self-inductance core, a second self-inductance core, a coupled inductor core, and a first plurality of inductor coil windings. Each of the first plurality of inductor coil windings has a series of first turns in a vertically stacked relation around the first self-inductance core, and a series of second turns in a vertically stacked relation around the first self-inductance core and the coupled inductor core. The filter assembly further includes a second plurality of inductor coil windings. Each of the second plurality of inductor coil windings has a series of first turns in a vertically stacked relation around the second self-inductance core, and a series of second turns in a vertically stacked relation around the second self-inductance core and the coupled inductor core.

An inductor has one or more wires and a multipart magnetic core. The multipart magnetic core has magnetic core parts that are adjacent and magnetically coupled. The inductor provides an inductance of at least 40 nH for currents greater than 1 A and less than 60 A, and at least 20 nH for currents of at least 60 A.

A coil device includes a core and a plurality of coils arranged in the core. A distance of a second gap formed by portions of the core located inside at least one of the coils is larger than that of a first gap formed by other portions of the core located between the coils next to each other.