Methods and systems for heating forming dies by an induction coil, including a pair of electromagnetic (EM) field stabilizers, each EM field stabilizer configured to be adjacent one end of the forming die while the forming die is within the induction heating coil.

An inductor device includes a conductive coil formed within a dielectric material and having a central core area within the coil. Particles are dispersed within the central core region to reduce eddy current loss and increase energy storage. The particles include magnetic properties.

A method for producing a magnet plate for a linear motor is provided. The magnet plate comprises a base plate and a plurality of magnets juxtaposed to one another on a surface of the base plate. The method comprises providing the plurality of magnets on a surface of the base plate at a certain interval, placing the base plate into a mold, supplying a resin material into the mold, so as to form a resin molding covering the plurality of magnets on the surface of the base plate by means of injection molding, and magnetizing the plurality of magnets.

There is provided a magnetic core having both high strength and high resistivity, a coil component produced with such a magnetic core, and a magnetic core manufacturing method capable of easily manufacturing a magnetic core with high strength and high resistivity. A method for manufacturing a magnetic core having a structure including dispersed Fe-based soft magnetic alloy particles includes: a first step including mixing a first Fe-based soft magnetic alloy powder containing Al and Cr, a second Fe-based soft magnetic alloy powder containing Cr and Si, and a binder; a second step including pressing the mixture obtained after the first step; and a third step including heat-treating the compact obtained after the second step, wherein the heat treatment forms an oxide layer on the surface of Fe-based soft magnetic alloy particles and bonds the Fe-based soft magnetic alloy particles together through the oxide layer.

A method of making an inductor device includes forming a first metal layer and an ILD on a substrate, patterning a trench perpendicular to the first metal layer in the ILD, and depositing a magnetic material. The method includes depositing another ILD and patterning a via adjacent to the trench that extends from the first metal layer to a surface of the ILD. The method includes patterning trenches in the ILD, with a first portion over and adjacent to and parallel to the first metal layer, and a second portion perpendicular to the first portion and extending from an end of the first portion to the via. The first metal layer and trenches are connected to through the via. The method includes depositing a metal in the via, and depositing a metal in the trenches to form a second metal layer connected to the first metal layer through the via.

A drum-type magnetic body includes: a pair of flange parts that are facing each other; and a shaft part connecting the pair of flange parts, wherein an outer periphery of a cross section of the shaft part in a direction orthogonal to an axis of the shaft part has an oval shape constituted by a pair of parallel straight parts and a pair of arc parts connecting end parts of the pair of parallel straight parts, and the flange parts each have an outer principal face running orthogonal to the axis of the shaft part, and the pair of parallel straight parts are running in parallel with a longitudinal direction of the principal face of the flange part.

Disclosed are apparatus and methods for embedded high voltage transformer components. Industrial applications require transformers that provide high voltage isolation. The laminate materials used for fabricating Printed Circuit Boards (PCB) are very good insulators and PCB transformers can provide higher voltage isolation than traditional wire wound devices. There are a variety of PCB laminate materials with different properties for voltage breakdown. FR-4 laminate is commonly used and has voltage breakdown properties exceeding 10 kV/mm. To produce PCB transformers with breakdown voltages exceeding 5 kV, it is beneficial to use laminate with much higher breakdown voltages. Generally, the materials with high breakdown voltage cost more. High voltage isolation can be achieved at a moderate cost by mixing low cost FR-4 laminate with high voltage dielectric materials.

A magnetic material is pressure-molded using dies into a compact having an H-shaped cross section, constituted by a pair of flange parts that are facing each other and a web part connecting the pair of flange parts. Next, a cured product of the compact is turned around a rotational shaft passing through the center parts of the principal faces of the flange parts, and the web part is ground, to form a drum-type ground product having a pair of flange parts on both ends of a shaft part in a manner facing each other. Then, the ground product is heat-treated to obtain a drum core of a magnetic body. On the drum core, terminal electrodes are provided and a conductive wire with sheath is wound around the shaft part, after which an exterior part is given, to obtain a coil component.

Disclosed are apparatus and methods for embedded high voltage transformer components. Industrial applications require transformers that provide high voltage isolation. The laminate materials used for fabricating Printed Circuit Boards (PCB) are very good insulators and PCB transformers can provide higher voltage isolation than traditional wire wound devices. There are a variety of PCB laminate materials with different properties for voltage breakdown. FR-4 laminate is commonly used and has voltage breakdown properties exceeding 10 kV/mm. To produce PCB transformers with breakdown voltages exceeding 5 kV, it is beneficial to use laminate with much higher breakdown voltages. Generally, the materials with high breakdown voltage cost more. High voltage isolation can be achieved at a moderate cost by mixing low cost FR-4 laminate with high voltage dielectric materials.

A punch processing method for electrical steel sheets to manufacture core segments includes: stacking a plurality of electrical steel sheets; and punching out the plurality of electrical steel sheets in a stacked state simultaneously to manufacture the core segments, wherein in a case where the core segments are applied to a stator core in which a maximum magnetic flux density at a tooth portion is to be higher than a maximum magnetic flux density at a back yoke portion, degrees of Vickers hardness of an electrical steel sheet located second from a bottom side and above in the stacked state are set to 180 HV or higher, and 10 HV or higher than a value of degree of Vickers hardness of an electrical steel sheet located on the bottom side in the stacked state.