Abstract: Provided is a coil including first and second lead parts, and a winding part. The winding part includes first to n-th turns. The winding part includes first and second coil ends. The first lead part extends from the first turn to the n-th turn along an upper surface of the first coil end. The second lead part extends from the n-th turn. The first and second lead parts include respective ends that are equal in height from the upper surface of the first coil end when viewed from a radial direction, and are equidistant from the n-th turn when viewed from an axial direction.

Abstract: An inductive component comprises a magnetic core, a winding, and a coil body. The coil body comprises a contact element attached to a contact strip of the coil body for electrical connection to the winding, a magnetic core receptacle in which the magnetic core is received in part, and an elongate recess formed in the contact strip and extending only in part below the magnetic core and above the contact element and extending in a longitudinally direction of the contact strip. A cover cap is attached to the contact strip and covers at least in part a side surface of the magnetic core facing the contact element. The cover cap comprises a first wall section covering at least in part the side surface of the magnetic core facing the contact element. A second wall section of the cover cap extending perpendicular to the first side surface of the magnetic core is inserted into the recess formed in the coil body, where the second wall section extends between the magnetic core and the contact element in the coil body.

Abstract: A reactor is provided with a coil including a pair of winding portions arranged in parallel, a magnetic core to be arranged inside and outside the winding portions, a case for accommodating an assembly including the coil and the magnetic core, and a sealing resin portion to be filled into the case. The case includes a bottom plate portion on which the assembly is placed, a side wall portion for surrounding the assembly, and an opening facing the bottom plate portion and having a rectangular planar shape. The pair of winding portions are so arranged that a parallel direction is orthogonal to the bottom plate portion. The reactor includes a supporting member to be arranged along a short side direction of the opening. The supporting member includes end portions to be stopped in contact with facing inner surfaces of the side wall portion.

Abstract: A resonant transformer structure includes a secondary wire bracket having a secondary wire groove, and a primary wire bracket having a primary wire groove. The secondary wire bracket is provided with two third wire holders each having multiple auxiliary legs. The primary wire bracket has a fourth wire holder having multiple connecting legs. The primary wire bracket has multiple jump wire gaps. A secondary winding is wound in the secondary wire groove. A primary winding is wound in the primary wire groove. The primary wire bracket extends into the secondary wire bracket. The wire end of the secondary winding does not pass the primary winding. The wire end of the primary winding extends through the jump wire gaps, and is connected to the connecting legs to increase a distance between the wire end of the secondary winding and the primary winding.

Abstract: Various examples are provided related to transformer designs that offer very high isolation while maintaining high coupling between the windings. In one example, an isolation transformer includes a first excitation coil wound around a first core and a second excitation coil wound about a second core. The second core is electrically separated from the first core by a high resistivity magnetic material or a non-conductive material. The first and second cores can include corresponding core segments arranged in a trident geometry or a quindent geometry. The core segments can align when the first excitation coil is inserted into a void of the second excitation coil. The isolation transformer designs are mechanically separable which can result in safe, energized, plug operations.

Abstract: A power converter includes a power transformer having a body housing two secondary windings, the body having first and second opposing and substantially parallel planar faces, each of the secondary windings having respective first coils and second coils having respective terminals. The terminals of the first coils extend through the first face of the transformer body, and the terminals of the second coils extend through the second face of the transformer body. The converter further includes two printed circuit boards (PCBs) each disposed at a corresponding face of the transformer body, each PCB carrying switches and capacitors of a respective rectifier circuit connected to the terminals of the coils of the respective secondary winding, each PCB including external connections for connecting the rectifier circuits in parallel to form an output of the power converter.

Abstract: Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires include first and second layer winding portions each including a plurality of blocks axially alternately arranged. A first block belonging to the first layer winding portion is disposed closest to the first flange part. A second block belonging to the second layer winding portion is disposed closest to the second flange part. The first and second wires cross each other in a region between axially adjacent blocks.

Abstract: A reactor includes: a coil; a magnetic core arranged inside of the wound portion and an outer core portion arranged outside of the wound portion; and a resin molded portion. An interval between the wound portion and the inner core portion differs in a peripheral direction of the wound portion. The reactor includes an electrically insulating material that is interposed in a location at which the interval is the narrowest, and a thick portion that is interposed in a location at which the interval is the widest and forms a portion of the inner resin portion. The proportion of the interval of the narrowest location with respect to the thermal conductivity is less than the proportion of the interval with respect to the thermal conductivity.

Abstract: A position sensor used in medical devices for use with medical positioning systems. The position sensor includes a core (80) having a body and one or more projections (841,842) extending from the body, wherein the core comprises a high-permeability material. The position sensor further includes a coil (74) surrounding the body, wherein the coil is configured to generate a voltage when subject to a magnetic field. The one or more projections extending from the body of the core are configured to concentrate the magnetic field into the coil and increase the voltage. Thus, various core designs are described which have projections which may increase the electrical and/or mechanical integrity of the position sensor and/or which may also induce magnetic flux flow within the position sensor thereby increasing the signals generated by the position sensor.

Abstract: Obtain an electric power converter by which a downsizing and a low cost can be realized in such a way that main components are standardized. A transformer and rectifier elements of a rectifier circuit are configured by using a single module, and a center tap is configured by laminating one pullout portion of a first secondary winding and one pullout portion of a second secondary winding, and a central connecting component is connected to a center tap and a terminal of a smoothing coil which composes a smoothing reactor.

Abstract: A combined transformer/inductor device includes a core having a central core leg and an outer core leg spaced apart from the central core leg, an inner bobbin disposed around the central core leg, an outer bobbin disposed around the inner bobbin and the central core leg and having an upper portion having a first oblong portion disposed around the outer core leg, a lower portion having a second oblong portion disposed around the outer core leg, and a central portion disposed around the inner bobbin and the central core leg, a first winding wound around the inner bobbin, and a second winding wound around the outer bobbin, the second winding having a first portion wound around the first oblong portion, a second portion wound around the central portion, and a third portion wound around the second oblong portion.

Abstract: A coil device includes a bobbin including a hollow cylindrical portion and first and second flanges disposed at ends of the hollow cylindrical portion, and having a first partition located between the first and second flange and a second partition located between the first partition and second flange; the first winding wound around the outer periphery of the hollow cylindrical portion between first partition and the first flange; the second winding wound around the outer peripheral surface of the hollow cylindrical portion between the first partition and the second flange, and wound around both sides of the second partition according to a predetermined position. The coil device can wind the winding wire of the second winding at a predetermined position, thereby reinforcing the secondary side magnetic coupling while controlling or reducing the leakage inductance manufacturing error between the primary and secondary side due to difference in the secondary side winding.

Abstract: Provided is a reactor including: a coil having wound portions; and a magnetic core including core pieces having inner core portions arranged inside of the wound portions. The core pieces are molded bodies of a composite material including a magnetic powder and a resin, and the reactor includes: projections that are integrally molded with and protrude from outer peripheral surfaces of the inner core portions, and that position the wound portions in radial directions by coming into contact with inner peripheral surfaces of the wound portions; and inner resin portions that fill spaces between the inner peripheral surfaces of the wound portions and the outer peripheral surfaces of the inner core portions excluding the projections.

Abstract: A multilayer coil component includes a body including laminated ferrite layers, a coil conductor including conductive layers laminated in the body, and a pair of outer electrodes disposed on the lower surface of the body. Each of the pair of outer electrodes is electrically connected to a corresponding one of the end portions of the coil conductor. The lower surface of the multilayer coil component includes a recessed section between the pair of outer electrodes.

Abstract: A wire-wound magnetic component includes a magnetic core, a coil set, a bobbin, an insulating wrapper, a caulking member and an ingress-protective finishing film. The magnetic core has at least one leg. The coil set is aligned and interacts with the magnetic core for electromagnetic induction, wherein the coil set includes at least one coil. The bobbin includes: a main body having a hollow portion for accommodating the leg of the magnetic core, and winding therearound a conductive wire to form the coil set, wherein the conductive wire has an unwound free end extending from the coil set; a cover plate disposed at an end of the main body and configured as a flange so as to define a winding space for accommodating the coil set; and an ingress-protective structure disposed in the winding space and separating the coil set from the cover plate.

Abstract: An inventive ignition coil has a transformer that includes a primary coil, a secondary coil and a core formed from stacked metal sheets. A plastic frame holds the sheets. A housing surrounds an interior in which the transformer is arranged and the interior is sealed with an electrically insulating casting compound. The housing comprises an interior wall bounding bounds a compartment in which a part of the core is arranged, the part of the core being outside the primary coil and the secondary coil.

Abstract: An AC/DC converter comprising a set of two rectifying bridges, each rectifying bridge comprising a first output connected to an output terminal of the AC/DC converter by an interphase inductor. The interphase inductor may comprise a magnetic circuit comprising two branches that are substantially parallel and two windings, each winding being wound about one branch selected from the two branches. Each winding may be held away from the magnetic circuit, at every point of the winding, by means of a set of at least one holding block made of a material having an A-scale Shore hardness lower than or equal to 50 and being distant at every point from the branches.

Abstract: An electromagnetic device includes an outer peripheral iron core, and at least three iron core coils which are in contact with or coupled to the inner surface of the outer peripheral iron core. The at least three iron core coils each include an iron core, and at least one of a primary coil and a secondary coil, which are wound around the iron core. The at least three iron core coils are arranged in a circle, and the iron core of one of the at least three iron core coils is in contact with the iron cores of the other iron core coils adjacent to the one iron core coil.

Abstract: A galvanic isolation circuit comprising: a galvanic isolator having a first side and a second side; a first communication link connected to the first side of the galvanic isolator and connectable to a first transceiver a second communication link connected to the second side of the galvanic isolator and connectable to a second transceiver; a first reference terminal connectable to the first transceiver; a second reference terminal connectable to the second transceiver; and an AC short capacitor connected between the first reference terminal and the second reference terminal.

Abstract: An inductor includes a support member, a plurality of conductor patterns disposed on at least one surface of the support member and supported by the support member, and an insulating structure interposed between conductor patterns adjacent each other among the plurality of conductor patterns, the insulating structure including a first insulating layer and a second insulating layer disposed on the first insulating layer, the second insulating layer covering side and upper surfaces of the conductor patterns, the second insulating layer being continuously formed along the side and upper surfaces of the conductor pattern, depending on external shapes of the side and upper surfaces of the conductor pattern disposed below the second insulating layer.

Abstract: A magnetic assembly includes plural first magnetic cores, plural coil windings and a second magnetic core. Each of the plural first magnetic cores includes plural legs and a first connection part. The first connection part is connected with first terminals of the plural legs. The first connection part of the first magnetic core at an upper position is located adjacent to second terminals of the plural legs of the adjacent first magnetic core at a lower position. Each coil winding is wound around at least one leg of the plural legs of the corresponding first magnetic core so as to form a magnetic element of the corresponding converter. The second magnetic core is stacked over the plural first magnetic cores. The second magnetic core is located adjacent to the second terminals of the legs of the topmost first magnetic core.

Abstract: An inductor includes a coil having a plurality of coil patterns and external electrodes connected thereto. An innermost coil pattern and an outermost coil pattern in the coil grow using first and second insulating wall as growth guides and the inductor has a structure in which there is no deviation in thickness and shape between the coil patterns.

Abstract: A common mode choke assembly includes a main core, a shunt core, and first and second two-piece bobbins. The main core has a generally rectangular main core body, and first and second core riser portions. The first and second core riser portions are connected to opposite ends of the main core body. The first core riser portion includes a first riser notch and the second core riser portion includes a second riser notch aligned with the first riser notch. The shunt core spans between and is positioned within the first and second riser notches. The first and second two-piece bobbins are positioned on opposite sides of the main core body adjacent to the first and second core riser portions. Each two-piece bobbin includes at least first and second end flanges, a passageway, and a mating surface. The assembly further includes a mounting header for receiving the main and shunt core.

Abstract: A winding layer pitch compensation for an air-core reactor which has at least two radially spaced apart concentric winding layers, includes a first set of strip-shaped star sheets, each of which is configured to be arranged radially below or above the winding layers and which are provided with at least one receiving slot along an edge extending from that edge, a second set of strip-shaped compensation sheets, each of which is provided with at least one insert slot along an extending from another edge, where a compensation sheet can be inserted into each receiving slot of a star sheet in a formfitting manner, where the star sheet engages into the insert slot of the compensation sheet in a formfitting manner, and where the slot depths of at least two receiving slots of the set of star sheets are different.

Abstract: An arrangement of coaxial windings is provided. The arrangement includes primary and secondary windings as air-core pulse transformers having insulation and winding arrangement for efficient energy transfer to the secondary winding. The secondary winding is wound with a central metallic core to include a coaxial transmission line with it and is configured to deliver a rectangular pulse across its terminals. The arrangement also includes a coaxial feeding arrangement for the primary winding with a central coaxial terminal connecting to one end of an adjustable primary closing switch electrode so as to have variable voltage feed input corresponding to its load requirement.

Abstract: A three-phase AC reactor according to an embodiment of the present invention includes an input and output terminal block; a peripheral iron core disposed under the input and output terminal block; and at least three iron-core coils each constituted of an iron core and a coil wound around the iron core, so as to contact an inner surface of the peripheral iron core or so as to be coupled to the inner surface. The at least three iron-core coils form gaps that can be magnetically coupled between two of the iron-core coils adjoining each other. The three-phase AC reactor includes a phase-based coil extending member unit that extends from coil end portions of the coils as base points to connection points of the input and output terminal block.

Abstract: An inductor includes a support member, a plurality of conductor patterns disposed on at least one surface of the support member and supported by the support member, and an insulating structure interposed between conductor patterns adjacent each other among the plurality of conductor patterns, the insulating structure including a first insulating layer and a second insulating layer disposed on the first insulating layer, the second insulating layer covering side and upper surfaces of the conductor patterns, the second insulating layer being continuously formed along the side and upper surfaces of the conductor pattern, depending on external shapes of the side and upper surfaces of the conductor pattern disposed below the second insulating layer.

Abstract: An inductor includes a coil having a plurality of coil patterns and external electrodes connected thereto. An innermost coil pattern and an outermost coil pattern in the coil grow using first and second insulating wall as growth guides and the inductor has a structure in which there is no deviation in thickness and shape between the coil patterns.

Abstract: An operator is prevented from touching terminals and the like. A reactor includes an outer peripheral iron core, and at least three core coils disposed inside the outer peripheral iron core. Each of the core coils includes a core and a coil wound onto the core. The reactor further includes a terminal base that has a plurality of terminals connected to leads extending from the coils and is disposed on one end of the outer peripheral iron core, and an electric shock prevention cover for covering the terminals of the terminal base.

Abstract: Provided is a low-weight, high-efficiency inductor design for use with or in electrical power equipment, such as inverters. A toroidal power inductor includes a support structure comprising an outer shell, an inner shell, and one or more coolant channels formed therebetween, a plurality of conductors wrapped around and supported by an exterior surface of the outer shell, and an interior cavity substantially enclosed by the inner shell of the toroidal support structure. The plurality of conductors are configured to provide an inductance for the toroidal power inductor, and the one or more coolant channels are distributed beneath the exterior surface of the outer shell to cool the plurality of conductors. An air-core power inductor may implement the conductors using high-temperature superconducting (HTS) tapes cooled by cryogenic fluid flowing within the coolant channels.

Abstract: A filter component assembly kit includes a bobbin that is configured with first and second members and a core that is in a quadrangular frame shape. When the first member is assembled with the second member, a through hole is formed in the bobbin. The through hole extends in a first direction. The core is configured with first and second extension bars. The first and second extension bars extend in parallel in the first direction. When the first extension bar is disposed in the through hole of the bobbin, rotation of the core around the first extension bar is prevented. First allowance of the first extension bar in a second direction, which is perpendicular to the first direction, in the through hole is larger than second allowance of the first extension bar in a third direction, which is perpendicular to the first and second directions, in the through hole.

Abstract: An electromagnetic device includes an outer peripheral iron core, and at least three iron core coils which are in contact with or coupled to the inner surface of the outer peripheral iron core. The at least three iron core coils each include an iron core, and at least one of a primary coil and a secondary coil, which are wound around the iron core. The at least three iron core coils are arranged in a circle, and the iron core of one of the at least three iron core coils is in contact with the iron cores of the other iron core coils adjacent to the one iron core coil.

Abstract: A coupled inductor includes a ladder magnetic core including two opposing rails extending in a lengthwise direction and joined by a plurality of rungs. The coupled inductor further includes a respective winding wound around each of the plurality of rungs. The plurality of rungs are divided into at least two groups of rungs, and a lengthwise separation distance between adjacent rungs in each group of rungs is less than a lengthwise separation distance between adjacent rungs of different groups of rungs.

Abstract: A stator includes a stator core, an insulating body, a coil, and a resin-molded product. The stator core includes a circumferentially side surface and an axially upper surface. The insulating body includes a side wall and an upper wall. The side wall covers the circumferentially side surface of the stator core. The upper wall covers the axially upper surface of the stator core. A radially inner side end surface of the upper wall is positioned farther toward a radially outer side than a radially inner side end surface of the side wall. The resin-molded product covers the coil.

Abstract: A high voltage transformer (50) includes a magnetic core (5); a low voltage winding (10); a high voltage winding (20); at least one inner sleeve (30); and a coil bobbin (24) for carrying the high voltage winding (20). The coil bobbin (24) is configured to be arranged inside the at least one inner sleeve (30) and configured to be attached to the at least one inner sleeve (30) at an outer perimeter of the at least one inner sleeve (30). The coil bobbin (24) includes at least one field-control electrode (22), which is adapted to shape an electric field generated by the high voltage winding (20).

Abstract: An ignition transformer for use with a spark ignition system for an internal combustion engine includes a central core, a primary coil, a secondary coil, and a magnetic return. The central core defines a first end and a second end. The primary coil is used to vary magnetic energy into the central core in response to a primary current applied to the primary coil. The secondary coil is used to generate a secondary voltage in response to changes in the magnetic energy in the central core. The magnetic return defines a return-path to couple magnetic energy from the first end to the second end. A permeability value of the return-path is selected so the transformer has a secondary-current versus time-response characteristic that decays to fifty-percent (50%) of an initial secondary current when ten percent (10%) to twenty-five percent (25%) of a burn-time interval has passed.

Abstract: The present invention discloses a power inductor encapsulated through injection molding. The power inductor comprises a coil winding, a soft magnetic ferrite middle column inserted in a middle of the coil winding, and a magnetic powder glue for encapsulating the coil winding and the soft magnetic ferrite middle column through injection molding. The power inductor is square and meets L?W and 2rc>0.4×2W, wherein a section width of the soft magnetic ferrite middle column perpendicular to a height direction of the inductor is 2rc, a length of the power inductor is 2L, and a width of the power inductor is 2W. According to the present invention, a balanced direct-current resistance and a direct-current superposition saturation characteristic can be obtained, and the direct-current resistance is greatly decreased while an excellent direct-current superposition saturation characteristic is ensured.

Abstract: A magnetic assembly includes a bobbin having at least first and second end flanges. The bobbin includes a channel wall displaced from the first end flange to from a channel therebetween. The channel receives and frictionally engages an I-core to retain the I-core in the channel. The bobbin includes a passageway that receives a middle leg of an E-core. The passageway includes a plurality of longitudinal ribs that extend from the first end flange toward the second end flange. The ribs are tapered with respect to the inner wall of the passageway. The middle leg of the E-core crushes the ribs. The frictional engagement of the crushed ribs with the middle leg retains the middle leg in the passageway. No taping, gluing or other additional step is required to assemble the bobbin and the two cores.

Abstract: A magnetic device for an electronic circuit includes a printed circuit board. A first and second magnetic component assembly can be electrically connected to the printed circuit. The second magnetic component assembly can be stacked on the first magnetic component assembly. The first magnetic component assembly can be positioned between the second magnetic component assembly and the printed circuit board. Each magnetic component assembly can include a bobbin, a winding disposed on the bobbin, and a core extending through the bobbin. A second bobbin on the second magnetic component can be positioned on either a first core or a first bobbin of the first magnetic component assembly. The stacked magnetic component configuration can help reduce the board space required to electrically connect both the first and second magnetic component assemblies to the printed circuit board, which can help increase the power density of the magnetic device.

Abstract: A resonant high current density transformer including two cores that are abut against each other with their first and second side posts on two sides thereof. A first bobbin envelops the first side posts on the same side of the two cores. A side plate is provided on either end of the first bobbin. The space between the two side plates is divided into two coil slots with a spacer, and at least a wire is wound in each coil slot to form a primary winding. A further second bobbin envelops the second side posts on the same side of the two cores. The outer periphery of the second bobbin is divided into two winding regions by another spacer, and a metal plate envelops each of the winding regions to form a secondary winding. A bobbin mount is disposed at the external flank of the second bobbin with a barrier plate at a side thereof for separating the first and the second bobbins.

Abstract: An ignition coil for delivering a spark-generating current to a spark plug includes a magnetically-permeable core; a primary winding disposed outward of the core; and a secondary winding disposed outward of the primary winding and inductively coupled to the primary winding. The secondary winding terminates at one end thereof in a low-voltage end and terminates at another end thereof in a high-voltage end. At least one of the low-voltage end of the secondary winding and the high-voltage end of the secondary winding is electrically connected directly to a terminal through an electrically conductive polymer.

Abstract: A coil device includes a bobbin, a first winding part, and a second winding part. A partition portion is formed on an outer peripheral surface of the bobbin. The first winding part is wound around the outer peripheral surface at one side of the partition portion. The second winding part is wound around the outer peripheral surface at the other side of the partition portion and has an inner winding layer and an outer winding layer located farther to the outer peripheral surface at the other side than the inner winding layer.

Abstract: According to one embodiment, contactless power transfer transformer includes power transmission coil and power reception coil. At least one of the power transmission coil and the power reception coil is configured by coupled and both-sides wound coil. The coupled and both-sides wound coil is configured by both-sides wound coils. One of magnetic poles of one of the both-sides wound coils is connected to one of the magnetic poles of adjacent one of the both-sides wound coils. Directions of magnetic fluxes toward corresponding coil from each of the magnetic poles connected to each other are identical. The both-sides wound coils are selected so that leakage magnetic flux around moving body does not exceed predetermined value. Number of the both-sides wound coils is set so that value obtained by multiplying power transfer capacity of one of the both-sides wound coils by the number satisfies capacity of the transformer.

Abstract: A magnetic device for an electronic circuit includes a printed circuit board. A first and second magnetic component assembly can be electrically connected to the printed circuit. The second magnetic component assembly can be stacked on the first magnetic component assembly. The first magnetic component assembly can be positioned between the second magnetic component assembly and the printed circuit board. Each magnetic component assembly can include a bobbin, a winding disposed on the bobbin, and a core extending through the bobbin. A second bobbin on the second magnetic component can be positioned on either a first core or a first bobbin of the first magnetic component assembly. The stacked magnetic component configuration can help reduce the board space required to electrically connect both the first and second magnetic component assemblies to the printed circuit board, which can help increase the power density of the magnetic device.

Abstract: A choke includes a single-piece core made of a same material, the single-piece core having a first board, a second board, and a pillar located between the first and second boards, a winding space located among the first board, the second board and the pillar, wherein the pillar has a non-circular and non-rectangular cross section having a first axis and a second axis substantially perpendicularly intersecting with each other at a center of the cross section of the pillar, and wherein a circumference of the cross section of the pillar includes two arc edges, four first substantially straight edges substantially parallel to the first axis, and two second substantially straight edges substantially parallel to the second axis, each of the first substantially straight edges being a joint of and in direct contact with one of the arc edges and one of the second substantially straight edges.

Abstract: A coupled inductor includes a ladder magnetic core including two opposing rails extending in a lengthwise direction and joined by a plurality of rungs. The coupled inductor further includes a respective winding wound around each of the plurality of rungs. The plurality of rungs are divided into at least two groups of rungs, and a lengthwise separation distance between adjacent rungs in each group of rungs is less than a lengthwise separation distance between adjacent rungs of different groups of rungs.

Abstract: A high-gradient internal-circulating oil-cooled Magnetic Separator, includes magnetic system coils, an internal-circulating oil path system, an external-cooling system and an oil conservator. The magnetic system coils are used for generating excitation magnetic field to achieve the iron-absorption function, the magnetic paths of the magnetic system coils being an open magnetic path structure. The internal-circulating oil path system is used for allocation and collection circulation of transformer oil. The external-cooling system is used for heat dissipation of transformer oil to achieve internal heat dissipation balance. The oil conservator is used as a supplementary container for the transformer oil expansion during the apparatus's operation. An internal-circulating structure is employed, and external-circulating pipes are simplified, circulating resistance in oil paths being reduced, problems including complex interference in oil paths arrangement, low circulation efficiency, leakage at welding spots, etc.

Abstract: Provided is a wireless charging system having different wireless modes, the system comprising: a method of providing a coil having different charging modes in one set, which is performed by providing separate coils or providing a lead wire in the middle of one coil, when the coil having at least two different charging modes is provided in the one set in a receiver for the wireless charging system using non-contact magnetic induction, wherein when one charging mode is selected for one coil set, a status value of the coil for transmitting and receiving wireless power energy is detected, thereby enabling the one charging mode to be selected, and different charging modes is mounted in one wireless charging system so that a charging mode appropriate for optimum conditions can be selected according to states and charging conditions wireless power transmitting and receiving devices.

Abstract: A bobbin apparatus for a magnetic component includes a core passage having one or more core passage steps located therein. The core passage steps provide one or more gaps between a core disposed in the core passage and the bobbin body. A potting material may be disposed in the gap or gaps in some applications to enhance heat transfer and/or to improve magnetic component performance by reducing effects of fringing flux on inner windings. A method of assembling a magnetic component to include one or more gaps between the core and bobbin core passage is also provided.

Abstract: A magnet assembly, having a disk-shaped magnet, which is made predominantly of metal material and has a through-hole and, by the through-hole, can be placed onto a region of a shaft made of plastic by a press fit. In the region of the magnet placed onto the shaft, the shaft has a diameter that is smaller than the diameter of the through-hole. The shaft has a plurality of radially protruding projections in the region of the magnet placed onto the shaft. The projections are distributed evenly on the circumference of the shaft and, with respect to the longitudinal axis of the shaft, having a radius, the double of which is oversized relative to the diameter of the through-hole before the magnet is placed onto the projections of the shaft.