A high-voltage transformer is disclosed. The high-voltage transformer includes a transformer core; at least one primary winding wound once or less than once around the transformer core; a secondary winding wound around the transformer core a plurality of times; an input electrically coupled with the primary windings; and an output electrically coupled with the secondary windings that provides a voltage greater than 1,1200 volts. In some embodiments, the high-voltage transformer has a stray inductance of less than 30 nH as measured on the primary side and the transformer has a stray capacitance of less than 100 pF as measured on the secondary side.

A transformer structure comprising a winding stand, a first coil, two second coils, and an iron core set. The first coil winds on the winding portion of the winding stand, and the first coil connects to the first pins electrically. The second coils are two metal sheets having electrical conductivity, the two second coils are provided with a ring body and two second pins respectively, the two second coils being arranged on the side edge of the winding portion of the winding stand. The iron core set is arranged on the winding stand, and the iron core set passes internally through the first coil and the two second coils. As a result, the DC resistance is decreased and the power consumption is reduced accordingly, improving the temperature rising problem.

A negative feedback inductor and a gate inductor are formed in different wiring layers of a substrate so as to be at least partially overlapped with each other in a plan view. When the lower wiring layer is thinner and the upper wiring layer is thicker, the negative feedback inductor Lc is formed in the lower wiring layer that is thinner.

An exemplary magnetic field measurement system includes a wearable sensor unit that includes a magnetometer and a twisted pair cable interface assembly electrically connected to the magnetometer.

A power transformer includes at least two first windings, at least two second windings interleaved with the at least two first windings, and a magnetic core. The at least two first windings and the at least two second windings are positioned adjacent the magnetic core. Each first winding includes a wire and a plurality of turns. One or more windings of the at least two first windings include a bonding material and at least two adjacent turns of said plurality of turns adhered to each other via the bonding material. Other example power transformers, methods of manufacturing power transformers, and methods of manufacturing windings are also disclosed.

Provided are a power supply member in a wireless power supply system, and applications of the power supply member. The power supply member includes: a first magnetic sheet that includes a first metal magnetic powder and a first resin, the first metal magnetic powder having a ratio of a length of a long side to a length of a short side is more than 1.0; a coil that is wound around and arranged on one surface of the first magnetic sheet; and a second magnetic sheet that is arranged on the same surface of the first magnetic sheet as the surface where the coil is arranged, is arranged on at least one of a side inside of an inner peripheral end of the coil or a side outside of an outer peripheral end of the coil, and includes a second metal magnetic powder and a second resin.

A magnetic component includes two covers, two magnetic columns between the two covers, a winding frame and windings. Each of the magnetic columns includes at least three magnetic blocks. Spacers are arranged between two adjacent magnetic blocks and/or between the magnetic block and the cover. The spacers form air gaps of a magnetic circuit of the magnetic component. The winding frame includes two extension parts and base arranged at ends of the two extension parts. A limiting part is provided on the base. The windings are arranged around the extension parts, each of the windings includes a winding wire and at least one lead terminal at an end of the winding wire. The winding wire of the winding is a flat wire, and a winding mode of the flat wire around the extension part is a vertical winding; the at least one lead terminal is limited by the limiting part.

A power conversion module includes a circuit board and a transformer mounted on the circuit board. The transformer includes a primary winding, a plurality of secondary windings, and a magnetic core assembly. The secondary winding includes a plurality of conductive plates each has a main body, two pins and two intermediate segments. The two pins extends along a first direction and couples to the main body via intermediate segments extending along a second direction; the transformer is electrically connected to the circuit board through the pins; wherein the main body has an opening, and the intermediate segments are positioned at two sides of the opening. The magnetic core assembly includes a middle post, and a coil section of the primary winding and the main bodies of the conductive plates are arranged in a staggered configuration and surround the middle post.

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.

An inductor includes a wire including a conducting line, and an insulating film disposed on an entire circumferential surface of the conducting line, and a magnetic layer embedding the wire. The magnetic layer contains a magnetic particle. The magnetic layer includes a first layer in contact with a first surface of an outer peripheral surface of the wire, and a second layer in contact with a second surface of the outer peripheral surface of the wire and the surface of the first layer. The relative magnetic permeability of the first layer is higher than the relative magnetic permeability of the second layer.