An embedded coil assembly embodiment includes a ferrite ring having an annular axis. The ferrite ring is positioned on a conductive metal surface. A plurality of separate, spaced apart conductive structures extend over the ferrite ring and are attached to the conductive metal surface in a first region of the conductive surface positioned radially outwardly of the annular axis of the ferrite ring and in a second region of the conductive surface positioned radially inwardly of the annular axis of the ferrite ring. An encapsulation layer covers, the ferrite ring and at least a portion of the plurality of conductive structures.

An internal combustion engine ignition coil according to the present invention includes: a central iron core; a primary coil disposed on an outer circumference of the central iron core; a secondary coil disposed on an outer circumference of the primary coil; a side iron core disposed on an outer circumference of the secondary coil; and an insulating material sealing the central iron core, the primary coil, and the secondary coil on an inner side of the side iron core. A first layered silicate having a particle diameter less than a winding diameter of the secondary coil is present at a higher concentration in a vicinity of the secondary coil than that in a vicinity of the side iron core in the insulating material. A second layered silicate having a particle diameter greater than the winding diameter of the secondary coil is present at a higher concentration than that of the first layered silicate between the outer circumference side of the secondary coil and the side iron core. The second layered silicate has an aspect ratio of 50 or more, the aspect ratio being a ratio of a long side of a particle of the layered silicate to a thickness of the particle.

Disclosed herein are a power inductor in which aspect ratios of the innermost pattern and the outermost pattern are similar with those of the intermediate pattern and a manufacturing method thereof. The power inductor includes coil patterns formed on one surface or both surfaces of a core insulating layer; insulating patterns bonded to at least one of an innermost pattern and an outermost pattern of the coil patterns; metal layers plated on surfaces of the coil patterns; and an insulator covering the coil patterns including the metal layers.

A cylindrical superconducting coil assembly comprising a plurality of individual coil units stacked together and retained in place by retaining structures, each coil unit comprising a resin-impregnated annular superconducting coil bonded at its axial extremities to respective rings of non-ferromagnetic material.

A method for manufacturing an electromagnetic coil with an intentionally engineered heat flow path is provided. The method includes defining at least one preferential heat flow path for heat to flow from the electromagnetic coil. A plurality of different materials are selected, each having different heat flow properties. A determination is made as to which portions of the electromagnetic coil should be coated with each of the different materials that will result in the at least one preferential heat flow path. The determined portions of the electromagnetic coil are then coated with each of the different materials to make a coated electromagnetic coil, and the coated electromagnetic coil is encased in a coil cartridge.

A manufacturing method for an electronic component includes: a step of forming an insulating layer on an outer electrode body so as to cover the outer electrode body, the outer electrode body being formed on a chip element which forms the electronic component; and a step of removing the insulating layer in a predetermined region of the outer electrode body by applying laser light to the insulating layer in the predetermined region so as to expose the predetermined region. The insulating layer has a higher absorption coefficient for the laser light than a material forming a surface of the outer electrode body.

An electromagnetic coil assembly for a control rod driving mechanism, comprising coils and a yoke for embedding the coils, wherein damascene holes are disposed on the yoke, the coils are installed in the damascene holes, the yoke comprises first yokes and second yokes, and the damascene holes are disposed on the first yokes; the first yokes are connected with the second yokes, and a through hole for cooperating with a sealing shell assembly is disposed on the second yokes; and a thermal conductivity of the first yokes is stronger than a thermal conductivity of the second yokes. The method is the processing method of the assembly. The coil assembly provided in technical solution or the coil assembly obtained by the method can remarkably reduce the temperature inside the coil, thereby improving the reliability of the CRDM electromagnetic coil assembly and prolonging the service life of the CRDM electromagnetic coil assembly.

A transformer is described. The transformer includes a transformer core having a core leg having a longitudinal axis, a low voltage winding arranged around the core leg, the low voltage winding extending along a first length in the direction of the longitudinal axis, a high voltage winding arranged around the low voltage winding, the high voltage winding extending along a second length in the direction of the longitudinal axis, wherein the second length is shorter than the first length, and a casting embedding the low voltage winding and the high voltage winding. The casting has a recess. The recess is provided at a radial location of the high voltage winding and the recess extends in the direction of the longitudinal axis.

A coating layer is used to encapsulate winding turns of an insulated conductive wire of a coil that is encapsulated by a magnetic material containing magnetic particles so as to prevent the magnetic particles from damaging the insulated insulating layer of the insulated conductive wire of the coil when the magnetic material is pressed to form a magnetic body, thereby avoiding unwanted short circuits that are caused by the magnetic particles and damaged portions of the insulated conductive wire.

An electronic device including a core, at least a wire and a magnetic material is provided. The core includes a pillar, a top board and a bottom board. The pillar is disposed between the top board and the bottom board. A winding space is formed among the top board, the bottom board and the pillar. The wire is wound around the pillar and located in the winding space. The magnetic material fills the winding space to encapsulate the wire. The magnetic material includes a resin and a magnetic powder, wherein an average particle diameter of the magnetic powder is smaller than 20 μm.