Abstract: Disclosed are apparatus and methods for arrayed embedded magnetic components that include magnetic devices that have a core that is embedded between two or more substrates and a winding pattern surrounding the core that is implemented on and through the two or more substrates. The winding pattern is operable to induce a magnetic flux within the core when energized by a time varying voltage potential. The winding pattern may be implemented by printed circuit layers, plated vias, other electrically conductive elements, and combinations thereof. Arrayed embedded magnetic components include two or more electrically interconnected magnetic devices positioned side-by-side in a horizontal integration, positioned top-to-bottom in a vertical integration, or combinations thereof. The magnetic devices may have a magnetic functionality such as, but not limited to, a transformer, inductor, and filter.

Abstract: A coil unit for contactless power transmission includes a non-circular flat coil; a core member made of a magnetic material; and a thermal conductor that has a higher thermal conductivity than the core member. The coil has a corner section and a non-corner section in a coil axial direction view, and the core member and the thermal conductor are disposed to face the non-corner section and the corner section, respectively in a coil axial direction.

Abstract: A coil assembly includes a coil unit in which a coil obtained by winding a winding wire is disposed around a magnetic core, a coil case that accommodates the coil unit, and a potting material with which an inside of the coil case is filled, and the coil case has an elastic fixing portion that is attachable to a resin member to which the coil case is to be fixed. The above-described configuration makes it possible to provide a coil assembly that is unlikely to crack and generate abnormal noises.

Abstract: A common mode filter includes a body portion including an external electrode disposed outwardly of the body portion, a plurality of coil electrode layers disposed within the body portion and electrically connected to the external electrode, and a shunt electrode layer disposed between portions of the plurality of coil electrode layers and having a coil shape.

Abstract: A structure includes a first encapsulating layer, and a first coil in the first encapsulating layer. A top surface of the first encapsulating layer is coplanar with a top surface of the first coil, and a bottom surface of the first encapsulating layer is coplanar with a bottom surface of the first coil. A second encapsulating layer is over the first encapsulating layer. A conductive via is in the second encapsulating layer, and the first conductive via is electrically coupled to the first coil. A third encapsulating layer is over the second encapsulating layer. A second coil is in the third encapsulating layer. A top surface of the third encapsulating layer is coplanar with a top surface of the second coil, and a bottom surface of the third encapsulating layer is coplanar with a bottom surface of the second coil.

Abstract: Method and device for adapting a series constant power system to operate constant voltage lighting.

Abstract: An ignition coil includes a magnetically-permeable core; a primary winding disposed outward of the core; a secondary winding disposed outward of the primary winding, inductively coupled to the primary winding, and terminating at one end thereof in a low-voltage end and terminates at another end thereof in a high-voltage which is electrically connected directly to a terminal through an electrically conductive polymer; and a case defining an interior having an interior surface such that the core, the primary winding, and the secondary winding are received within the interior of the case such that the at least one of the low-voltage end and the high-voltage end, the terminal, and the electrically conductive polymer are disposed within the recess and such that the electrically conductive polymer is in direct contact with the interior surface within the recess.

Abstract: A common mode choke coil according to one embodiment of the present invention includes a first coil conductor, a second coil conductor, and a third coil conductor. In the embodiment, the second coil conductor has a different shape than the first coil conductor and the third coil conductor. In the embodiment, the first coil conductor, the second coil conductor, and the third coil conductor extend parallel with each other in a first region in plan view as seen from an axial direction along the coil axis. In the embodiment, in the first region, when seen in a cross section cut along a plane including the coil axis, in an n-th turn, an arranging order of the first coil conductor, the second coil conductor, and the third coil conductor from an inner side in a radial direction thereof is inverted from that in an n+1th turn.

Abstract: An isolator device is provided comprising a body of first dielectric material between the first and second conductors, such as primary and secondary coils of a micro-transformer. A region of second dielectric material is provided between the body of first dielectric material and at least one of the first and second electrodes, wherein the second dielectric material has a higher relative permittivity than the first dielectric material. This provides enhances ability to withstand the Electric fields generated at the edge of a conductor. The body of the first dielectric can be tapered to provide stress relief to prevent the second dielectric material developing stress cracks.

Abstract: A magnetic component unit in the present disclosure includes: a coil component; a heat dissipator which has an engagement fixing portion and a press fixing portion; and a magnetic core fixing portion. The magnetic core fixing portion includes: a holding portion that presses against the coil component; an engaging portion that extends from a first end part of the holding portion toward the heat dissipator and has a turned-back end part; and a pressing portion that extends from a second end part of the holding portion toward the heat dissipator and has an end part bent into an L-shape. The engagement fixing portion has a U-shape, and one end and the other end of the engagement fixing portion are connected to a peripheral edge portion of the heat dissipator. The press fixing portion has a columnar shape and is provided vertically protruding from the heat dissipator.

Abstract: In accordance with one embodiment, a High-Density, Folded Electromagnetic Coil comprises a plurality of wire spirals that are folded into substantially semicircles, stacked against each other, and have a common centerline to form a substantially high-density, electromagnetic coil. The wire spirals are electrically connected such that electric current flows through each wire spiral in series and in the same direction through each wire spiral.

Abstract: Provided is a reactor in which an accessory member that is attached to the reactor is integrated with an assembly. The reactor includes an assembly of a coil having a winding portion and a magnetic core and an accessory member that is attached to the assembly. In this reactor, an outer core portion of the magnetic core is made of a composite material obtained by dispersing soft magnetic powder in a resin, the outer core portion protruding from the winding portion, and the accessory member includes an embedded portion that is embedded in the outer core portion and a functional portion that protrudes outward from the outer core portion.

Abstract: A coil device, in which an air-core coil of a cylindrical shape is buried in a core including a magnetic powder and a resin, showing, CV value of the below described cross sectional areas, SA1 to SA5, 0.55 or less, when an outer diameter of the air-core coil is “a1”, an inner diameter of the same is “a2”, and a distance between a surface of the core perpendicular to a direction of winding axis and an end of the air-core coil in the direction of winding axis is “h”, is provided. The coil device is superior in DC superimposing characteristic while suppressing the magnetic saturation.

Abstract: Mixed magnetic powders for making a magnetic core or body is disclosed, wherein the mixed magnetic powders comprises a first magnetic powder and a second magnetic powder, each of the first magnetic powder and the second magnetic powder being made of a soft magnetic material, wherein the average particle diameter of the first magnetic powder is greater than that of the second magnetic powder, and each of the first magnetic powder and the second magnetic powder has a pre-configured particle size distribution for increasing the density of the magnetic body.

Abstract: Systems and methods for creating an inductive element are disclosed. Multiple partial windings may be created relative to a core, where each of the partial windings is initially discontinuous. Multiple printed conductors may be created on a substrate, where the multiple printed conductors are arranged to electrically connect the multiple partial windings. The multiple partial windings may be electrically connected to the multiple printed conductors to create a complete winding around the core.

Abstract: A dry transformer load switch, and transformer having such switch, has a hollow insulation cylinder extending longitudinally about a virtual center axis and has a plurality of connection contacts arranged along the inner circumference thereof, and a radially oriented main contact arranged in the interior of the hollow insulation cylinder so as to be rotatable about the center axis and which, with a corresponding rotary movement, can be optionally electrically connected by the radially outer end thereof to one of the connection contacts. In a hollow-cylindrical space about the center axis that is defined by the radially inner and outer end of the main contact, there is a barrier shield, which can be rotated together with the main contact about the axis.

Abstract: One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The three or more magnetic alloy particles have an average particle diameter of 4 ?m or smaller. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.

Abstract: A device for reducing a magnetic unidirectional flux component in the core of a transformer includes at least one compensation winding, which is magnetically coupled to the core of the transformer, at least one switching unit in series with the compensation winding to feed a current into the compensation winding, and at least one current-limiting reactor in series with the compensation winding, wherein two switching units are connected in parallel with each other per current-limiting reactor and the current-limiting reactor comprises two windings, which can be connected either in series or in parallel with each other, in order to reduce the number of current-limiting reactors in comparison with conventional cascaded circuits.

Abstract: In manufacturing an embedded magnetic component, a cavity is formed in an insulating substrate with one or more channels connecting the cavity to an exterior of the component. The channels include one or more obstruction sections that define a sealed base area of the cavity into which adhesive is dispensed to secure the magnetic core in the cavity. The obstruction sections prevent egress of the adhesive before it hardens. The cavity and the magnetic core are then covered with a first insulating layer. Through holes are formed through the first insulating layer and the insulating substrate, and plated up to form conductive vias. Metallic traces are added to the exterior surfaces of the first insulating layer and the insulating substrate to form upper and lower winding layers. The metallic traces and the conductive vias form the windings for an embedded magnetic component, such as a transformer or an inductor.

Abstract: A molding inductor may include a bus-bar having a core hole thereon, and formed of copper material, a bobbin covering the bus-bar to insulate the bus-bar from an exterior, a cylinder core comprising a soft magnetic material, and inserted into the core hole, and an inductor case receiving the bobbin at an exterior of the bobbin.

Abstract: A coil substrate includes a stacked structure in which a plurality of structures are stacked, each of the structures including a first insulating layer and a wiring formed on the first insulating layer, which becomes a part of a spiral-shaped coil; and an insulating film that covers a surface of the stacked structure, the spiral-shaped coil being formed by connecting the wirings of the adjacent structures in series.

Abstract: In one embodiment, an inductor has a substrate, a conductor disposed above the substrate and a seamless ferromagnetic material surrounding at least a first portion of the conductor.

Abstract: A soft magnetic powder has a composition represented by Fe100-a-b-c-d-e-fCuaSibBcMdM?eXf (at %) (wherein M is Nb, W, Ta, Zr, Hf, Ti, or Mo, M? is V, Cr, Mn, Al, a platinum group element, Sc, Y, Au, Zn, Sn, or Re, X is C, P, Ge, Ga, Sb, In, Be, or As, and a, b, c, d, e, and f are numbers that satisfy the following formulae: 0.1?a?3, 0<b?30, 0<c?25, 5?b+c?30, 0.1?d?30, 0?e?10, and 0?f?10), wherein a crystalline structure having a particle diameter of 1 nm or more and 30 nm or less is contained in an amount of 40 vol % or more, and the Vickers hardness of the particles is 1000 or more and 3000 or less.

Abstract: A primary coil can be inside the recess, where the primary coil is wound around the center of the recess. A secondary magnetic core can include a protruding center portion that is configured for insertion into the center of the recess so that the protruding center portion overlaps the primary magnetic core side wall and is configured to provide separation between the primary magnetic core and the secondary magnetic core. A secondary coil can be wound around the protruding center portion of the secondary magnetic core.

Abstract: A choke coil including a coil (6) and a core (1) including a first core part (5) inserted into a central hole of the coil (6) and a plurality of second core parts (4) disposed along the outer periphery of the coil. The first core part (5) and the second core part (4) form a closed magnetic path. The second core parts (4) are shaped so that the total sum of the areas of cross sections thereof perpendicular to the axis of the coil is greater than the area of a cross section of the first core part (5). A gap part (G) is formed in the second core parts (4), and a ferrite magnet (7) that applies a magnetic bias is disposed in the gap part (G).

Abstract: Provided is a reactor having high joining strength between an end surface connecting member and an outer resin-molded portion and excellent reliability. A reactor includes a coil having a winding portion, a magnetic core having an inner core portion disposed inside the winding portion and an outer core portion disposed outside the winding portion, an end surface connecting member that is fixed to an end portion of the inner core portion and disposed between an end surface of the winding portion and the outer core portion, and an outer resin-molded portion that integrates the outer core portion and the end surface connecting member, wherein a detachment preventing portion is formed in the end surface connecting member, the detachment preventing portion being embedded in the outer resin-molded portion and having a detachment preventing shape that suppresses detachment of the outer resin-molded portion.

Abstract: In a power supply apparatus, one of a transformer and a first semiconductor device is stacked on the other thereof to constitute a stack assembly. The stack assembly, a second semiconductor device, and a choke coil are located on the major surface. A primary direct-current wire, which connects the first semiconductor device to a direct-current power source, is drawn out from a first predetermined portion of the stack assembly. A primary alternating-current wire, which connects the first semiconductor device and the transformer, is drawn out from a second predetermined portion of the stack assembly. The primary direct-current wire and the primary alternating-current wire are located to be separated from each other via at least a part of the stack assembly.

Abstract: An integrated inductor can be tunable via a control current which alters the magnetic flux density in a permeable magnetic material. The resulting inductor can be adjusted in-circuit, and may be suitable for applications such as dc-dc converters, RF circuits, or filters requiring operation at high frequencies and across wide bandwidths.

Abstract: A method of manufacturing a winding-type coil component, wherein at the time of manufacturing the winding-type coil component, the method can efficiently form an inclined external electrode, can change inclination of an external electrode, and can satisfy a demand for the manufacture of plural kinds of winding-type coil components provided with external electrodes having different inclination angles respectively.

Abstract: A wireless charging coil is provided herein. More specifically, provided herein is a wireless charging coil comprising a first stamped coil having a first spiral trace, the first spiral trace defining a first space between windings, and a second stamped coil having a second spiral trace, the second spiral trace defining a second space between windings, the first stamped coil and second stamped coil in co-planar relation, the first stamped coil positioned within the second space of the second stamped coil, and the second stamped coil positioned within the first space of the first stamped coil, the first and second coils electronically connected and an adhesive covering and surrounding the first stamped coil and the second stamped coil to bond the coils together and to insulate the coils.

Abstract: Provided are a coil component capable of preventing internal residence of air bubbles after encapsulated with a resin and an electronic circuit incorporating such coil component. The coil component (10) includes: a columnar core having a flange portion (210) which is formed to have a diameter larger than that of a shaft portion having a coil wound therearound; and an annular core having an opening (110) through which the columnar core is inserted, the perimeter of the inner flange face of the flange portion (210) being configured by externally disposed regions (211,212,213,214) which are positioned outside the inner face of the opening (110) in the radial direction, and internally disposed regions (215,216,217,218) which are positioned inside the inner face of the opening (110) in the radial direction.

Abstract: An integrated stacked transformer includes a primary inductor and a secondary inductor, and the primary inductor includes at least a first turn and a second turn, and is at least formed by a plurality of windings of a first metal layer and a second metal layer, wherein the first metal layer and the second metal layer are two adjacent metal layers, and the second turn of the primary inductor is disposed inside the first turn; the secondary inductor includes at least a first turn, and the secondary inductor is at least formed by at least one winding formed by the second metal layer, wherein the first turn of the secondary inductor substantially overlaps the first turn of the primary inductor; wherein the second turn of the primary inductor includes a segment of a parallel connection structure constructed by the first metal layer and the second metal layer.

Abstract: An optical module includes: a circuit board having a surface in which an electronic element is mounted; an optical waveguide array in which a plurality of optical waveguides are formed; an optical element in which an optical signal that is transmitted and received from and to the optical waveguide is input and that is mounted at a side surface of the circuit board; and a connection member that connects the optical element and the electronic element, wherein a connection portion of a side surface of the circuit board in which the connection member is received has a curved shape.

Abstract: An inductor array chip includes a magnetic laminated body and a plurality of inductors. The magnetic laminated body includes a plurality of stacked magnetic layers. The plurality of inductors are arranged inside the magnetic laminated body. The inductance of a first inductor differs from the inductance of a second inductor. The inductors include a plurality of coil-shaped conductors and via-hole conductors. The plurality of coil-shaped conductors are arranged between the magnetic layers. The via-hole conductors electrically connect the plurality of coil-shaped conductors. The inductors include a plurality of inductors in which the section sizes of the coil-shaped conductors differ from one another.

Abstract: A mobile terminal is provided with a housing, a circuit substrate, a secondary-side non-contact charging module, and a heat dissipating sheet. The circuit substrate comprises a substrate, an electronic component that is mounted to the substrate, and a shield case that covers the electronic component. The heat dissipation sheet is in contact with the shield case.

Abstract: An vertical PCB inductive device is adapted to be surface mount soldered to a substrate. The inductive device may comprise a transformer having a plurality of windings or one or more discrete inductive devices. The inductive device, being amenable to volume production, may also provide cost savings by reducing the number of layers and the PCB area otherwise required by planar magnetics in a power converter. A power converter may be fashioned to be vertically oriented and surface mount soldered to a substrate such as a customer PCB.

Abstract: A multilayer inductor providing improved DC superposition characteristics by a permanent magnet that emits a bias magnetic flux, and having a low-loss material as a magnetic body to improve converter conversion efficiency. The multilayer inductor has a plurality of laminated electrically insulating magnetic layers; and laminated conductive patterns, each of the conductive patterns being connected in sequence in the lamination direction forming a spiral coil inside the magnetic layer. An magnetized annular permanent magnet layer emits a magnetic flux whose direction is opposite that of a magnetic flux excited by the coil is between an outer peripheral edge of the inductor and an outer peripheral edge of the coil so as not to overlap an inner peripheral part of the magnet layer with the conductive patterns and so as to block a space between the conductive patterns and the magnet layer, in axial view of the coil.

Abstract: Embodiments of an electromagnetic coil assembly are provided, as are methods for the manufacture of an electromagnetic coil assembly. In one embodiment, the method includes joining a first end portion of a braided lead wire to a coiled magnet wire. A dielectric-containing material is applied in a wet-state over the coiled magnet wire and over the first end portion of the braided lead wire. The dielectric-containing material is cured to produce an electrically-insulative body in which the coiled magnet wire and the first end portion of the braided lead wire are at least partially embedded. Prior to application of the dielectric-containing material, the braided lead wire is at least partially impregnated with a masking material deterring wicking of the dielectric-containing material into an intermediate portion of the braided lead wire.

Abstract: Miniaturized magnetic components for electronic circuit board applications include enhanced magnetic composite sheets facilitating increased direct current capacity and higher inductance values. The components may be manufactured using relatively simple and straightforward lamination processes.

Abstract: An ignition coil for an internal combustion engine includes a wire-wound resistor. The wire-wound resistor includes a core material, a conductor winding, a pair of metal caps disposed at both ends of the core material, the pair of metal caps in contact with the conductor winding, and a resin coating material disposed so as to be in close contact with the core material and the conductor winding. The resin coating material is filled between the conductive winding and the resin coating material is formed to cover the conductor winding from an outer peripheral side of the conductor winding The metal cap includes a bottom portion and a cylindrical side portion. An inner peripheral side of the side portion is provide with ridges projecting internally formed along a direction crossing a winding direction of the conductor winding.

Abstract: U-shaped cores and fasteners are embedded in resin members, and brackets provided at respective ends of the fasteners protrude from the resin members. By fixing the brackets and a casing with screws, a reactor main body and the casing are fixed together. Openings formed by a partition wall that suppresses a direct application of a resin flowing from resin-filling portions to the fasteners are provided between the respective fasteners and the respective resin-filling portions. A protrusion extending in an opposite direction to a core and in parallel with the partition wall is provided between the resin-filling portions and the partition wall. The resin flowing from the resin-filling portion flows in between a core upper face and the fastener, and between a fastener surface located behind the partition wall and the internal surface of a die.

Abstract: An inductor includes an inductor body having a top surface and a first and second opposite end surfaces. There is a void through the inductor body between the first and second opposite end surfaces. A thermally stable resistive element positioned through the void and turned toward the top surface to forms surface mount terminals which can be used for Kelvin type sensing. Where the inductor body is formed of a ferrite, the inductor body includes a slot. The resistive element may be formed of a punched resistive strip and provide for a partial turn or multiple turns. The inductor may be formed of a distributed gap magnetic material formed around the resistive element. A method for manufacturing the inductor includes positioning an inductor body around a thermally stable resistive element such that terminals of the thermally stable resistive element extend from the inductor body.

Abstract: The present invention discloses a circuit board, including a substrate and a magnetic core, where the magnetic core is embedded into the substrate, at least one turn of a winding conductor wound around the magnetic core is arranged on the substrate, each turn of the winding conductor includes a first end-surface conductor and a second end-surface conductor that are separately arranged on two ends of the magnetic core, and each turn of the winding conductor further includes a first side-surface conductor that penetrates through the magnetic core from an inner side of the magnetic core and a second side-surface conductor that penetrates through the magnetic core from an outer side of the magnetic core. The circuit board and the power conversion apparatus having the circuit board provided by the present invention, achieve larger inductance, save materials, and reduce cost for fabricating a power conversion apparatus.

Abstract: A method for manufacturing a magnetic grain compact, includes: providing multiple metal grains constituted by soft magnetic alloy containing Fe, Si, and a metal element M that oxidizes more easily than Fe; compacting the metal grains; and forming oxide film formed on a surface of the metal grains, and forming first bonding parts where adjacent metal grains are directly contacted and bonded together, and second bonding parts where adjacent metal grains are bonded together via the oxide film formed around the entire surface of said adjacent metal grains other than the first bonding parts, by applying heat treatment to the compacted metal grains, thereby obtaining a magnetic grain compact.

Abstract: A method of producing an inductor with high inductance includes forming a removable polymer layer on a temporary carrier; forming a structure including a first coil, a second coil, and a dielectric layer on the removable polymer layer; forming a first magnetic glue layer on the removable polymer layer and the structure; removing the temporary carrier; and forming a second magnetic glue layer below the structure and the first magnetic glue layer.

Abstract: A support frame for an electrical transformer assembly, comprising two loop-shaped parts, each loop-shaped part having a plurality of limbs, each limb having a peripheral recessed portion in which a primary electrical coil is mountable, and at least one secondary coil is mountable in piggyback on the primary electrical coil, one limb of each loop-shaped part having a straight section. The frame also includes an adjustable attaching means for attaching one of the loop-shaped parts with respect to the other loop-shaped part and adjusting a distance therebetween, so that only the straight sections are adjacent and form a central leg, the central leg being for receiving a magnetic core distinct from the attaching means. The frame provides a means and a method to efficiently secure adjacent windings in a circular core transformer kernel.

Abstract: The present invention provides a voltage conversion device and a method for adjusting common mode noise impedance, which relates to the circuit field, and enables a common mode impedance value of a noise source and an impedance value of an EMI filter to enter a mismatch state, so as to reduce a restriction on design of the EMI filter, so that a size of the EMI filter is smaller and utilization efficiency of the EMI filter is higher. The method is: adjusting a common mode impedance value of a noise source by adjusting a balanced impedance value in a balanced winding on a voltage conversion device, so as to enable the common mode impedance value of the noise source and an impedance value of an EMI filter to enter a mismatch state.

Abstract: An inductor includes a stacked body having a first through hole, and an insulation film covering the stacked body. The stacked body includes a first wiring, a first insulation layer stacked on the first wiring and including a second through hole exposing the first wiring, a first adhesive layer stacked on the first insulation layer and including a third through hole communicating with the second through hole, a second wiring stacked on the first adhesive layer and including a fourth through hole communicating with the third through hole, a second insulation layer stacked on the second wiring and including a fifth through hole communicating with the fourth through hole, and a first through electrode with which the second to fifth through holes are filled. The first and second wirings are connected to form a helical coil. The fifth through hole has a larger planar shape than the fourth through hole.

Abstract: Disclosed is a planar transformer including a first planar core which is formed of a magnetic substance, a lower secondary winding which is disposed to enclose a first left sill of the first planar core between a first rear sill and a first front sill of the first planar core; a primary winding which is disposed on the lower secondary winding so as to enclose first left and right sills of the first planar core; an upper secondary winding which is disposed on the primary winding to enclose the first left sill of the first planar core; and a second planar core disposed on the upper secondary winding.

Abstract: The present invention is directed to a reactor 1 including a combined product 10 made up of a coil member 2 and a magnetic core 3, and a case 4 storing the combined product 10. The case 4 is formed by a combination of a side wall portion 41 surrounding the combined product 10 and a bottom plate portion 40 being a member separate from the side wall portion 41. Between the bottom plate portion 40 of the case 4 and the coil member 2 (coils 2a and 2b), an insulating sheet 42 is interposed. In order to fabricate the reactor 1, the insulating sheet 42 is disposed on the bottom plate portion 40, and the combined product 10 is disposed on the insulating sheet 42. Then, the side wall portion 41 is disposed from above the combined product 10, and the side wall portion 41 and the bottom plate portion 40 are engaged with each other.