An exemplary magnetic field measurement system includes a wearable sensor unit and a single controller. The wearable sensor unit includes a plurality of magnetometers and a magnetic field generator configured to generate a compensation magnetic field configured to actively shield the magnetometers from ambient background magnetic fields. The single controller is configured to interface with the magnetometers and the magnetic field generator.

An exemplary magnetic field measurement system includes a wearable sensor unit that includes a magnetometer, a magnetic field generator configured to generate a compensation magnetic field configured to actively shield the magnetometer from ambient background magnetic fields, a twisted pair cable interface assembly electrically connected to the magnetometer, and a coaxial cable interface assembly electrically connected to the magnetic field generator.

A magnetic field generator includes a plurality of conductive windings comprising a first conductive winding arranged in a first plane and a second conductive winding arranged in a second plane that is substantially parallel to the first plane. The plurality of conductive windings are configured to generate, when supplied with a drive current, a first component of a compensation magnetic field. The first component of the compensation magnetic field is configured to actively shield a magnetic field sensing region located between the first conductive winding and the second conductive winding from ambient background magnetic fields along a first axis that is substantially orthogonal to the first plane and the second plane.

A magnetic field generator includes a first planar substrate, a second planar substrate positioned opposite to the first planar substrate and separated from the first planar substrate by a gap, a first wiring set on the first planar substrate, a second wiring set on the second planar substrate, and one or more interconnects between the first planar substrate and the second planar substrate. The one or more interconnects electrically connect the first wiring set with the second wiring set to form a continuous electrical path. The continuous electrical path forms a conductive winding configured to generate, when supplied with a drive current, a first component of a compensation magnetic field configured to actively shield a magnetic field sensing region located in the gap from ambient background magnetic fields along a first axis that is substantially parallel to the first planar substrate and the second planar substrate.

A coil component includes a first coil and a second coil that magnetically couples with the coil and causes a negative inductance to be generated. The coil component further includes an electrode that is provided at a position adjacent to or in the vicinity of a port of each of the first and second coils.

This application provides a planar transformer and a switching power adapter. The planar transformer includes a PCB winding and two magnetic cores. The two magnetic cores wrap two sides of a winding body of the PCB winding to form a closed magnetic loop. A first group of welding points is disposed on a primary-side wire side of the PCB winding, and a second group of welding points is disposed on a secondary-side wire side of the PCB winding. The planar transformer is directly welded to an external circuit board by using the first group of welding points and the second group of welding points. In this way, no pin needs to be welded on the PCB winding board. In addition, the planar transformer can be vertically installed on the external circuit board by using the first group of welding points and the second group of welding points.

An inductor includes a wire having a width W, and a first electrode and a second electrode continuous to each of both ends of the wire. The wire, the first electrode, and the second electrode are present on the same plane. The plane area S1 of the first electrode and the plane area S2 of the second electrode are a square value (W.sup.2) or more of the width W. An area in which the wire is disposed is positioned between the first electrode and the second electrode. The area has a length X in a longitudinal direction equal to a length L between the first electrode and the second electrode along a facing direction of the first electrode and the second electrode, and a length Y in a short-length direction in a direction perpendicular to the longitudinal direction. The length X in the longitudinal direction is 1.5 times or more of the length Y in the short-length direction.

An integrated transformer device is provided with both inductive and transformer elements. The inductive and transformer elements are combined within the same device, sharing at least a part of the same magnetic and electrical paths. The integrated transformer device comprises a top core, a bottom core, and a shunt core. A high voltage winding is wound around the bottom core. A low voltage winding is wound around the bottom core and the shunt core. Power semiconductor devices, connected in parallel, form a portion of the low voltage winding and are disposed at a location proximate to the high voltage winding.

A valve is provided having a circuit that includes an electrical conductor with a temperature-dependent electrical resistance. The electrical conductor is connected in series to an electrical series resistor, which includes a parallel circuit of a non-reactive wire and an NTC resistor. The electrical conductor includes a coil wire wound into a magnetic coil that is operable to move an armature to open or close the valve. The effect of the operation of the valve itself on the magnetic force of the coil is minimized by arranging the NTC resistor to be thermally coupled with the coil wire.

The present disclosure discloses a transformer. The transformer includes a magnetic core, at least one winding assembly and at least one conductive plate assembly. The magnetic core includes a magnetic core pillar. The at least one winding assembly is disposed around the magnetic core pillar to receive an input power. The at least one conductive plate assembly is disposed around the magnetic core pillar and electromagnetic coupled with the winding assembly via the magnetic core. The conductive plate assembly includes at least two conductive plates. Each of the conductive plates includes a main body and a pin extending outwardly from the corresponding main body. The extension directions of the pins of the at least two conductive plates extending outwardly from the corresponding main bodies are different from each other. The pins are connected to different circuit boards. Each of the circuit boards includes at least one rectifier.