A wireless device is provided and includes a substrate, a first coil and a second coil. The first coil is configured to be wound around a first axis, and the first coil is disposed on the substrate and is configured to operate in a wireless charging mode. The second coil is disposed on the substrate and configured to operate in a wireless communication mode. The wires of the second coil partially overlap the wires of the first coil.

Current sensors and associated measurement systems. A current sensor includes: an insulating substrate provided with a central opening; a Rogowski winding surrounding the central opening and including a first coil and a second coil which are superposed and electrically connected in series, the first coil and the second coil being wound around the substrate along a first contour line and a second contour line, respectively, each contour line defining, in the plane of the substrate, a contour in the shape of a quadrilateral centred on the central opening;
wherein a length of the contour in the shape of a quadrilateral defined by the first contour line is greater than a length of the quadrilateral defined by the second contour line and a width thereof is smaller than a width of the quadrilateral defined by the second contour line.

An assembly for power converting includes a circuit board, a power switching circuit mounted on the circuit board, an inductor coil that includes a winding and two ends, a magnetic core that is surrounded by the winding of the inductor coil, and a magnetic mixture that encapsulates the circuit board, the power switching circuit, the inductor coil and the magnetic core. The winding of the inductor coil is stacked above the power switching circuit and is sufficiently large to fill up a size of the assembly.

The present disclosure provides a coupled inductor and a power module. The coupled inductor includes a magnetic core, a first winding, a second winding, and an adjustment structure located in the magnetic core. At least part of the first winding and at least part of the second winding are in the magnetic core, a stacked portion of the first winding and a stacked portion of the second winding are stacked in a height direction, a non-stacked portion of the first winding and the second winding are not stacked in the height direction, and a non-stacked portion of the second winding and the first winding are not stacked in the height direction. The adjustment structure which is adjoining the non-stacked portion of the first winding and the non-stacked portion of the second winding and has a lower magnetic permeability than that of the magnetic core may adjusts leakage inductance.

Certain embodiments relate to an electronic device including a wireless communication circuit, an flexible printed circuit board (FPCB) electrically coupled with the wireless communication circuit, a first coil formed on the FPCB, a power management circuit, and a second coil electrically coupled with the power management circuit and including a spiral pattern formed thereon by a winding at least one wire, wherein the second coil includes a first end disposed on an outer edge of the spiral pattern, and a second end disposed on an inner edge of the spiral pattern, and wherein an electric path extending from the second end to the first end is disposed on the FPCB.

A variable coupled inductor comprises a first core having a first protrusion, a second protrusion, a third protrusion, a first conducting-wire groove and a second conducting-wire groove on the top surface of the first core, wherein the second protrusion is disposed between the first protrusion and the third protrusion, wherein a first conducting wire is disposed in the first conducting-wire groove, and a second conducting wire is disposed in the second conducting-wire groove, wherein a second core, disposed over the first core, wherein a magnetic structure is integrally formed with the second core and protruded on the bottom surface of the second core, wherein the bottom surface of the magnetic structure is located over the top surface of the second protrusion.

Magnetic component assemblies for circuit boards include magnetic cores formed with a gap and preformed conductive windings sliding assembled to the cores via the gaps. The gaps in the cores are filled with a magnetic material to enhance the magnetic performance. The magnetic component assemblies may define power inductors.

An inverter having a first busbar for connection to a positive pole of a battery and a second busbar for connection to a negative pole of the battery and a filter element that includes an annular core surrounding the first and the second busbar and made from a ferromagnetic material. It is proposed that a core made from a further ferromagnetic material to be provided in an intermediate space surrounded by the annular core and formed between the two busbars.

A reactor includes a coil having a winding portion, a magnetic core, and a holding member holding an end surface of the winding portion and the outer core portion of the magnetic core, the holding member having a through hole into which an end portion of the inner core portion of the magnetic core is inserted. One of the inner core portion and the outer core portion is a hybrid core composed of a powder compact and a resin core molded on an outer periphery of the powder compact, and the other of the inner core portion and the outer core portion is a hybrid core or a resin core. The resin core of the inner core portion and the resin core of the outer core portion are continuous with each other via the through hole of the holding member so as to form a seamless single body.

An inductive charging arrangement for a vehicle battery having a counter coil arrangement which comprises at least one primary coil arrangement located outside the vehicle and at least one secondary coil arrangement located inside the vehicle, wherein primary coil arrangement and secondary coil arrangement each comprise a coil and a magnetic core and, with appropriate positioning of the vehicle and energizing of the primary coil arrangement, electric energy is transmitted by inductive coupling from the primary coil arrangement to the secondary coil arrangement wherein the air gap is part of the transmission region and means are provided to minimize the air gap between the primary coil arrangement and the secondary coil arrangement.