Abstract: A reactor-use component which provides improved workability in assembling into a reactor, and a reactor using the component are provided. The reactor-use component is for structuring a reactor including a coil 10 formed with a pair of paralleled coil elements 10A and 10B made of a spirally wound wire and a core 20 fitted into the coil elements 10A and 10B to form an annular shape. The reactor-use component includes an internal resin portion 30 that retains a shape of the coil 10, and hollow bores 30h formed by a part of the internal resin portion 30 for fitting the core 20 to inner circumferences of the coil elements 10A and 10B. By inserting internal core portions 22 into the hollow bores 30h and joining opposite ends of the internal core portions 22 to exposed core portions 24, the reactor 1 can be obtained. Because the internal resin portion 30 retains the coil 10 in a state incapable of expanding or compressing, the workability in assembling into the reactor 1 can be improved.

Abstract: A transformer includes a zigzag transformer comprising first, second and third magnetic cores. The transformer further includes an auxiliary winding set comprising respective pairs of series-connected windings on respective pairs of the first, second and third magnetic cores, the pairs of series-connected windings having respective first terminals connected to respective AC phases of the zigzag autotransformer and respective second terminals configured to provide respective AC output phases.

Abstract: Provided is an inductor capable of adjusting an inductance in dozens of nH increments without requiring a large number of components. The inductor includes: a conductor; a first core body and a second core body each having an opposed surface, the opposed surface of the first core body and the opposed surface of the second core body facing each other so as to enclose the conductor; and a holding part provided with a slide surface for varying an opposed area of the opposed surfaces of the first core body and the second core body, for holding at least one of the first core body and the second core body at a desired position.

Abstract: Generally, a low-profile planar core structure for use in magnetic components and related processes are presented herein. More specifically, the planar core structure provides a relatively large winding area that reduces heat dissipation, reduces leakage inductance, and allows for a low-profile design. The planar core structure has a center core that is elongated along a horizontal axis. Furthermore, conductors may enter and exit the planar core structure without increasing its height.

Abstract: Provided is an annular reactor core formed of a U-shaped core and core legs. Core joints including end portions and two protrusions form the U-shaped core. Between the protrusions of these core joints, a plurality of (two) core legs 6 formed of core blocks are arranged so as to have gaps and the protrusions. The ratio A/B, which is a ratio of the length A of the protrusions of the core joint to the average length B of the core blocks constituting the core legs in a magnetic path direction, is optimized so as to be not less than 0.3 but not more than 8.0, whereby an increase in copper loss due to leak magnetic fluxes of the gap portions is suppressed.

Abstract: Primary (4, 8) and secondary (10) windings are subjected to a significant heat stress during operation of a high voltage transformer. The present invention describes a high voltage transformer which is believed to have good temperature properties. This transformer may have a planar primary winding and a Litz secondary winding. The planar primary winding may abut against a planar face of the core (2) therefore allowing for a good heat exchange between these two elements. The Litz secondary winding and the planar primary winding may be cooled by means of a cooling medium.

Abstract: An electronic circuit has an inductor. The inductor comprises a first number of electrically conductive tracks (108, . . . ) in, or on, a substrate (105). The tracks are separated from one another. The inductor comprises a second number of electrically conductive wires (120, . . . ). The ends of each wire contacts two different ones of the tracks. Among the first number of tracks there is at least a specific track that is electrically isolated from the wires upon the wires having been connected. Such an inductor can be made using a standardized track configuration on a substrate, and selectively skipping one or more tracks in order to determine the inductance.

Abstract: A composite magnetic core assembly includes an inner magnetic core and an outer magnetic core. The inner magnetic core is made of a high saturation flux density and low permeability material. The outer magnetic core is made of a low saturation flux density and high permeability material. The outer magnetic core includes a ring-shaped wall and a receptacle. The inner magnetic core is accommodated within the receptacle.

Abstract: Core structures that may be used in transformers to improve the number of turns-ratios available. The core structures may include at least three outer legs and a center leg. In operation windings of the transformer may be wrapped around the center leg (e.g., using a bobbin) a fractional number of times, such that the turns-ratio of the transformer may be more finely selected without increasing the number of turns required. Additionally, the outer legs may have different cross-sectional areas, such that even more fractional turns-ratios are available.

Abstract: A coil component has a first core with a winding core portion, a second core with a winding core portion, a first coil wound on the winding core portion of the first core, and a second coil wound on the winding core portion of the second core. A part of the first coil is wound on the winding core portion of the second core. The first core and the second core are arranged as magnetically separated from each other.

Abstract: A three-phase, multi-winding includes a core, the core including a hub and an outer shell around a perimeter of the hub. wherein the hub and the outer shell are in a fixed position with respect to each other. The core also includes multiple slots. In addition to the core, the multi-winding device includes a primary winding positioned in at least two of the slots; and multiple spatially distributed secondary windings, wherein at least one of the secondary windings is positioned proximate the primary winding in at least one of the two slots.

Abstract: A magnetic coupler having higher response is provided. The magnetic coupler includes a thin film coil wound in a first layer; a first MR element being disposed in a second layer, and detecting an induced magnetic field generated by a signal current flowing through the thin film coil; and yokes being disposed close to the first MR element, and including a soft magnetic material. The first MR element is disposed in a position corresponding to a linear region of the thin film coil in a stacking direction. The yokes are disposed at both of an inner turn side and an outer turn side of the thin film coil in a manner of interposing the first MR element in the second layer. Thus, reduction in intensity of the induced magnetic field is suppressed, and intensity distribution of the induced magnetic field becomes flatter.

Abstract: A magnetic core is disclosed. The magnetic core comprises a first side post with a first inner wall, a second side post opposite to the first side post with a second inner wall, an annular space enclosed by the first inner wall and the second inner wall, a central post with a second axis, and a core base connected with the first post, the second post, and the central post. The annular space comprises a first axis, a first opening, and a second opening. The first opening and the second opening are oppositely and respectively formed between the first side post and the second side post. The second axis of the central post in the annular space is disposed between the first axis and one of the first opening and the second opening.

Abstract: The present invention provides an inductor having high DC bias characteristics using a Fe alloy core and provides a method for manufacturing the same. The present invention relates to a wire-wound inductor which includes: a wire-wound inductor core obtained by grinding a compression molded mixed magnetic material powder including magnetic substance powder mixed with binder; and a metal conductive wire wound around a groove section of the wire-wound inductor core. For example, the magnetic substance powder has content ratio of 4 to 13 wt % of Si; 4 to 7 wt % of Al; the balance Fe; and unavoidable impurity. The magnetic substance powder has particle diameter distribution in which equal to or greater than 90% of the magnetic substance powder has particle diameter equal to or lower than 75 ?m.

Abstract: Saturation of nonlinear ferromagnetic core material for on-chip inductors for high current applications is significantly reduced by providing a core design wherein magnetic flux does not form a closed loop, but rather splits into multiple sub-fluxes that are directed to cancel each other. The design enables high on-chip inductance for high current power applications.

Abstract: In a converter arrangement (1) for generating an electrical voltage for an electrical and/or electronic circuit from the field of a primary conductor (6) through which current flows, comprising a first winding (2) around a first magnetic circuit (3), wherein the first magnetic circuit (3) has a first bushing (31) for the primary conductor (6), it is proposed, in order to prevent voltage spikes at output terminals (11) of the converter arrangement (1), that a second winding (4) around a second magnetic circuit (5) is connected in series with the first winding (2), wherein the second magnetic circuit (5) has a second bushing (51) for the primary conductor (6), that the first magnetic circuit (3) does not have an air gap, and that the second magnetic circuit (5) comprises at least one air gap (52).

Abstract: A common-mode choke coil includes a magnetic core, external electrodes, first and second wires, and a magnetic top. The magnetic core includes a winding core section and first and second flange sections. The external electrodes are provided on the first and second flange sections. The first wire is directly wound around the winding core section. The second wire is wound around the outside of the first wire. The first turn of the second wire is wound while being in contact with the first turn of the first wire and the first flange section.

Abstract: A vehicular power converter includes switches and first and second inductive components. The first and second inductive components have substantially adjacent portions and are coupled to the plurality of switches such that when current flows from the plurality of switches and through the first and second inductive components, flux generated by the current flowing through the adjacent portions of the first and second inductive components and located between the adjacent portions is oriented in substantially opposite directions.

Abstract: An isolation magnetic device produced by inserting a first end of a wire through a first hole of a core, wrapping the first end of the wire around a first side of the core and inserting the first end of the wire through a second hole of the core. The second hole of the core is spaced from the first hole and has a longitudinal axis extending parallel to a longitudinal axis of the first hole. The device is further produced by inserting a second end of the wire through the second hole of the core, wrapping the second end of the wire around the first side of the core and inserting the second end of the wire through the first hole of the core.

Abstract: The present invention provides a dust core including, as principal components, a pulverized powder of an Fe-based amorphous alloy ribbon; and a Cr-containing Fe-based amorphous alloy atomized spherical powder, and the pulverized powder is in the shape of a thin plate having two principal planes opposing each other, and assuming that a minimum dimension along a plane direction of the principal planes is a grain size, the pulverized powder includes a pulverized powder with a grain size more than twice and not more than six times as large as a thickness of the pulverized powder in a proportion of 80 mass % or more of the whole pulverized powder and includes a pulverized powder with a grain size not more than twice as large as the thickness of the pulverized powder in a portion of 20 mass % or less of the whole pulverized powder.

Abstract: An inductor includes a core substrate including minute column-like electrical conductors extending between a front surface and a back surface of the core substrate. Each column-like electrical conductor is insulated from adjacent column-like electrical conductors by being surrounded by an insulating material. Insulation layers are formed on the front surface and the back surface of the core substrate, respectively. At least two connection electrical conductors extend through each of the insulation layers. Each connection electrical conductor is electrically connected to a plurality of the column-like electrical conductors. Wirings are formed on each of the insulation layers to connect said connection electrical conductors to each other electrically. The wirings, the connection electrical conductors and the column-like electrical conductors are connected to form a coil in a three-dimensional manner.

Abstract: A coil assembly includes a coil form and a winding. The coil form includes a base defining a loop defined by a pair of opposed first sides and a pair of opposed second sides, a plurality of spaced apart support members extending from the base along the first sides, and a coil support structure extending from the base at each of the second sides. Each support member includes a first portion and a second portion, the first portion extending from the base and the second portion extending from the first portion, with a gap is defined between adjacent support members. The winding abuts the first portion of at least some of the spaced apart support members and is at least partially secured by the second portions of the support members. The winding abuts each of the coil support structures, and is curved in a saddle shape.

Abstract: The present invention relates to a field coil assembly of an electromagnetic clutch for a compressor. The present invention comprises a core 210, and a coil 240 installed to the core 210 and formed by winding a unit wire 250. At this time, the unit wire 250 wound on the coil 240 is made of aluminum, and an area ratio R of an inner sectional area M of the core 210 to a cross-sectional area of the unit wire 250 is 400 to 640. According to the present invention as above, since the unit wire 250 used for the coil 240 is made of aluminum with a small specific weight and low price rather than copper, the weight of the field coil assembly 200 is decreased to improve fuel efficiency of a vehicle and decrease a production cost of the field coil assembly 200.

Abstract: An apparatus for cost-effective and efficient cooling of an active element. The active element may be a magnetic element such as an inductor or a transformer having windings and a core. A thermally conductive vessel has a cavity that is adapted to conform to a surface of the active element, with a small gap remaining between the surface of the active element and the surface of the cavity. The winding is adapted to have a uniform surface, by utilizing an edge winding or a machined winding fabricated from an extruded tube. A thermally conductive encapsulant fills gaps in the apparatus to further improve cooling.

Abstract: A magnetic component, with a first and a second U/UR core (U1, U2) assembled to a first O-shaped core assembly, wherein an U/UR core has—according to its shape—a first post and a second post with free ends on one side and a leg connecting the first post and the second post on their other side, wherein the first and the second U/UR core (U1, U2) are assembled with their free ends abutting each other to form the first O-shaped core assembly. The free ends of a third U/UR core (U3) are abutting the outside of the first O-shaped core assembly on one side and that the free ends of a fourth U/UR core (U4) are abutting the outside of the first O-shaped core assembly on an opposite side. In another embodiment, the leg of a third U/UR core (U3) is abutting the outside of the first O-shaped core assembly, wherein the ends of a fourth U/UR core (U4) are abutting the ends of the third U/UR core (U3). In a further embodiment, the ends of a third U/UR core (U3) are abutting the outside of the first O-shaped core assembly.

Abstract: A flux concentrator and method for manufacturing a flux concentrator is provided. The method can include combining powdered soft magnetic material, a binder, a solvent, a internal lubricant; mixing the materials to create a mixture, evaporating the solvent from the mixture, molding the mixture to form a flux concentrator, and curing the flux concentrator. The flux concentrator may be laminated and broken into multiple pieces, which makes the flux concentrator more flexible. Breaking the flux concentrator does not significantly affect the magnetic properties. Since the permeability of the binder is very similar to that of air, adding tiny air gaps between the fractions is not significantly different than adding more binder.

Abstract: An M-winding coupled inductor includes a first end magnetic element, a second end magnetic element, M connecting magnetic elements, and M windings. M is an integer greater than one. Each connecting magnetic element is disposed between and connects the first and second end magnetic elements. Each winding is wound at least partially around a respective one of the M connecting magnetic elements. The coupled inductor further includes at least one top magnetic element adjacent to and extending at least partially over at least two of the M connecting magnetic elements to provide a magnetic flux path between the first and second end magnetic elements. The inductor may be included in an M-phase power supply, and the power supply may at least partially power a computer processor.

Abstract: A magnetic element module includes a magnetic core assembly and at least one first winding structure. The magnetic core assembly includes a first magnetic core and a second magnetic core. The first magnetic core includes a first magnetic slab and a first magnetic post. The second magnetic core includes a second magnetic slab and a second magnetic post. The first winding structure is sheathed around the first magnetic post. The first magnetic post is placed on a second edge of the second magnetic slab. The second magnetic post is placed on a first edge of the first magnetic slab. The first magnetic core, the second magnetic core and the first winding structure are combined together, thereby producing the magnetic element module.

Abstract: An apparatus for effecting inductive coupling among a plurality of electrical elements includes: (a) an electrically non-conductive core member oriented about an axis; (b) at least one first electrical element of the plurality of electrical elements substantially nestingly surrounding the core member oriented about the axis; each respective first electrical element being in spaced relation vis-à-vis other first electrical elements in an installed orientation; and (c) at least one second electrical element of the plurality of electrical elements disposed in surrounding relation with respect to the core member about the axis sufficiently proximal with at least one selected said first electrical element in the installed orientation to establish the inductive coupling.

Abstract: A sintered ferrite material, which is obtained by adding Bi2O3 in a range from 0.5% by mass to 3% by mass against 100% by mass of a material having a composition formula of (1-x-y-z)(Li0.5Fe0.5)O.xZnO.yFe2O3.zCuO wherein x, y and z satisfy 0.14?x?0.19, 0.48?y<0.5 and 0?z?0.03 and satisfies resistivity equal to or higher than 106 ?m, initial permeability equal to or higher than 200 and saturation magnetic flux density equal to or higher than 430 mT at 23° C. and equal to or higher than 380 mT at 100° C.

Abstract: A technology for manufacturing a transformer core with laminated structure draws the magnetic sheet materials in parallel from plural winding bodies around which the magnetic sheet material is wound like hoop, cuts the materials at predetermined positions substantially simultaneously to form plural magnetic sheet materials each with a different length, forms a block-shaped laminate by laminating the plural magnetic sheet materials in the order of length, and further laminates the block-shaped laminates in the order of length.

Abstract: In an inductor including a coil, a drum type core constituted by a soft magnetic metal material and a resin material, and a filling member constituted by a soft magnetic metal material and a resin material in which a magnetic flux excited by aforesaid coil goes through aforesaid drum type core and aforesaid filling member serially, the present invention constitutes an inductor, wherein aforesaid drum type core is constituted by injection molding so as to include a receiving portion, aforesaid coil is arranged in aforesaid receiving portion, and aforesaid filling member is filled therein.

Abstract: An embodiment provides an inverter transformer comprising: a first bobbin around which a first coil is wound, the first bobbin comprising a first through hole; a second bobbin around which a second coil is wound, the second bobbin comprising a second through hole; a spacer between the first and the second bobbins; and a core inserted into the first and the second through holes.

Abstract: There is provided a transformer including cores combined with a bobbin wound with coils, and center leg parts extended from the cores and contacting each other by being inserted into both ends of the bobbin, wherein stress dispersion hole, dispersing stress occurring according to temperature variations around the cores, is formed at the edge of center leg connection parts of the cores from which the center leg parts are extended.

Abstract: A zigzag autotransformer includes a zigzag transformer including first, second and third magnetic cores and an auxiliary winding set including respective pairs of series-connected windings on respective pairs of the first, second and third magnetic cores, the pairs of series-connected windings having respective first terminals connected to respective AC input phase terminals of the zigzag autotransformer and respective second terminals configured to provide respective AC output phases.

Abstract: An ultra-wideband assembly is provided. The assembly includes a non-conductive tapered core having a conductive wire wound on an outer surface of the non-conductive tapered core, a low-frequency inductor coupled to the non-conductive tapered core via the distal end of the conductive wire and configured to allow mounting of the non-conductive tapered core at an angle with respect to the circuit board. The low frequency inductor is being disposed on a dielectric board configured to be coupled to the circuit board. The assembly includes an ultra-wideband capacitor coupled to the non-conductive tapered core via the proximate end of the conductive wire, the ultra-wideband capacitor being also coupled to the transmission line on the dielectric board.

Abstract: Low-loss ferrite comprising 100% by mass of main components comprising 47.1-49.3% by mol of Fe2O3, 20-26% by mol of ZnO, and 6-14% by mol of CuO, the balance being NiO, and 0.1-2% by mass (as SnO2) of Sn and 0.05-2% by mass (as Mn3O4) of Mn, and having an average crystal grain size of 0.5-3 ?m.

Abstract: A choke including a core and a hollow coil is provided. The core includes a first core body and a second core body. The first core body includes a pillar. The second core body is a flat plate and has an opening. An end of the pillar is suitable to be disposed in the opening and joined to the same. The hollow coil is fitted on the pillar.

Abstract: A subsea data and power transmission apparatus includes primary and secondary open magnetic circuits with coils for wireless data and power transfer between a drilling tool and a drilling rig. The primary magnetic circuit is U-shaped and the secondary is O-shaped. Both magnetic systems are electrically insulated. The electrical signal and power are transferred from one magnetic circuit to another through an air or water gap between the magnetic circuits. The U-shaped and O-shaped magnetic circuits allow communication and power transfer remotely with no mechanical or electrical connectors.

Abstract: A reactor apparatus for a railway vehicle includes a coil assembly, a side cover, through bolts inserted into the coil assembly, cover supporting members, a pair of frames, and ribs that reinforce the pair of frames. A support/fixation section of each frame is fixed to an under surface of a vehicle pedestal. The pair of the frames are disposed on both sides of the coil assembly, and support the through bolts and the cover supporting member. For each rib, leg members that extend from corresponding reinforcing body are penetrated into and welded to the corresponding frame. For each cover supporting member, a leg member that extends from corresponding cover supporting body is penetrated into and welded to the corresponding frame.

Abstract: A power generation system comprises a power source, a transformer module for converting a low voltage from the power source into a higher voltage, and a voltage-multiplier module for amplifying higher voltage from the transformer module. The transformer module comprises a number N of transformer units. Each transformer unit comprises at least one transformer, and each transformer comprises a magnetic core, a primary winding, and a secondary winding. Primary windings of the transformers in the transformer module are electrically coupled in parallel to the power source, secondary windings of the transformers of each transformer unit comprise a pair of output terminal, and N is equal to or greater than two. The voltage-multiplier module comprises the number N of multipliers. Each multiplier module comprises a positive and a negative input terminal, and a positive and a negative output terminal.

Abstract: A transformer core includes a stack of a plurality of planar core plates of a magnetically permeable material, which plates each consist of a first and a second sub-part that together enclose at least one opening. The sub-parts can be fitted together via contact faces that are located on either side of the opening and that extend obliquely with respect to the centerline of the core plate. The invention also relates to the use of the described transformer core in a Coriolis flowmeter with the Coriolis tube extending through the opening so as to induce a current in the tube.

Abstract: The present invention provides a power transmission transformer of which workability in implementing and reliability of connection are considered in a noncontact power transfer device using individual self-oscillation circuits. The power transmission transformer for a noncontact power transfer device including a transmitting coil L1 and a drive coil L2 for self-oscillation on a power transmission device side includes a bobbin in which the transmitting coil and the drive coil L2 are disposed, in which the transmitting coil and the drive coil L2 are configured by an air-core coil using self-bonding wire, and the bobbin 1 includes a winder spindle 1a, 1b on both surfaces opposed to each other across a collar 2 formed of a flat plate, and a mating portion 3 for mating with an external portion in an end portion of the winder spindle 1b, and the drive coil L2 is mounted on the winder spindle 1b and the transmitting coil L1 is mounted on the other, opposed winder spindle 1a across the collar.

Abstract: A high-voltage isolation transformer utilizing balun cores for transferring an alternating current signal from a first circuit to an output circuit, and a high voltage generator, such as a Cockcroft-Walton multiplier to apply a high direct current voltage bias with a high degree of voltage isolation between the first circuit and the output circuit. Multiple balun core transformers can be used in order to reduce the voltage rise between each individual transformer.

Abstract: A composite transformer, having first and second inductors and a transformer, includes a transformer core that has a core leg around which portions of first and second windings are wound, and a base fixing the core leg, a first inductor core that has a core leg around which a portion of the first winding is wound and a base fixing the core leg, and a second inductor core that has a core leg around which a portion of the second winding is wound and a base fixing the core leg. The first and second windings are wound in a manner that flux are cancelled with each other, and are wound around the core leg of the transformer core in a manner alternately overlapping with each other, and are wound around respective core legs of the first and second inductor cores so as to be apart from each other to suppress any interference of magnetic fluxes.

Abstract: Three-phase AC or two-phase DC choke arrangement of a frequency converter, in which is a magnetic core, in which are the phase-specific pillars of the AC choke arrangement or the branch-specific pillars of the DC choke arrangement (1a, 1b), around which are arranged the phase-specific windings of the AC choke arrangement or the branch-specific windings of the DC choke arrangement (Ldc1+, Ldc1?) to filter difference-mode currents, and in which an additional pillar (3) for damping common-mode currents is arranged in the magnetic core of the choke. The additional pillar (3) is arranged without the phase-specific or branch-specific windings fitted around it, in which case damping of the common-mode currents is achieved by means of the common-mode impedance formed by the windings arranged around the additional pillar and around the phase-specific or the branch-specific pillars.

Abstract: The present invention provides a splitter including a seat, a first inner core, a second inner core, a first coil, an outer core and a second coil. The seat has a bobbin, and the first coil is wound on the bobbin. The first inner core and the second inner core, disposed on the bobbin, are assembled with each other to cover the bobbin. The outer core and the first inner core are assembled with each other. The second coil is disposed between the outer core and the first inner core.

Abstract: An electronic device including a magnetic body and a wire is provided. The magnetic body has a first magnetic powder and a second magnetic powder mixed with the first magnetic powder. The Vicker's Hardness of the first magnetic powder is greater than that of the second magnetic powder and the mean particle diameter of the first magnetic powder is greater than that of the second magnetic powder.

Abstract: A flux sharing magnetic circuit has a parallel arrangement of secondary electromagnetic circuits with independent loads. An AC driven primary delivers current to the secondary circuits to maintain charge in their batteries. The batteries deliver DC current to the loads while secondary coils provide battery charging currents to maintain charge in the batteries. When current is not drawn by the battery or the load, flux is delivered to a flux pool in the magnetic circuit so that input AC power drain is reduced.

Abstract: A transformer includes an iron core having a shaft around which a plurality of coil modules is mounted. Each coil module includes spiral, upper and lower coil sections each having an outer loop and a plurality of inner loops received in and coplanar with the outer loop. The inner loops of the spiral upper coil section and the inner loops of the spiral lower coil section include a common innermost loop through which the shaft extends. Upper and lower ends of each coil module are respectively interconnected to the outer loops of the upper and lower coil sections. The spiral upper section is superimposed on the spiral lower section to form a two-layer structure. The lower end of an upper one of two adjacent coil modules interconnected to the upper end of a lower one of the two adjacent coil modules.