Abstract: An electrical component is disclosed, wherein the electrical component comprises: a body; a conductive element, disposed in the body, wherein at least one portion of a first terminal part of the conductive element is exposed outside of the body; a conductive and adhesive layer, overlaying on the body and covering a first portion of the terminal part of the conductive element, wherein a second portion of the terminal part of the conductive element is not covered by the conductive and adhesive layer; and at least one metal layer, overlaying on the conductive and adhesive layer and covering the second portion of the terminal part of the conductive element, wherein the at least one metal layers is electrically connected to the second portion of the terminal part of the conductive element for electrically connecting with an external circuit.

Abstract: The present invention is one that uniformly and simultaneously heats a plurality of cup-shaped or annular metallic bodies to improve productivity, and has a plurality of divided core parts formed by dividing an annular core; configured such that a plurality of divided end parts of the divided core part are respectively attached with metallic bodies W made of non-magnetic metal; and inductively heats the metallic bodies W through input windings provided in outer or inner circumferential parts of the metallic bodies W.

Abstract: Disclosed herein is a multilayer inductor. The multilayer inductor according to an exemplary embodiment of the present invention includes a laminate on which a plurality of body sheets are multilayered; a coil part configured to have internal electrode patterns formed on the body sheet; a first gap made of a non-magnetic material located between the multilayered body sheets; a second gap made of a dielectric material located between the multilayered body sheets and located on a layer different from the first gap; and external electrodes formed on both surfaces of the laminate and electrically connected with both ends of the coil part. By this configuration, the exemplary embodiment of the present invention can remarkably improve DC biased characteristics without reducing breaking strength of the inductor.

Abstract: The present description relates to the field of fabricating microelectronic structures. The microelectronic structure may include a microelectronic substrate have an opening, wherein the opening may be formed through the microelectronic substrate or may be a recess formed in the microelectronic substrate. A microelectronic package may be attached to the microelectronic substrate, wherein the microelectronic package may include an interposer having a first surface and an opposing second surface. A microelectronic device may be attached to the interposer first surface and the interposer may be attached to the microelectronic substrate by the interposer first surface such that the microelectronic device extends into the opening. At least one secondary microelectronic device may be attached to the interposer second surface.

Abstract: An integrated inductor comprising a multi-winding inductor having a transformer winding (L1) and a resonant inductor (L2). Sections (I), (2) of the magnetic circuit of the transformer winding (L1) are incorporated into magnetic circuits of at least two parts (L2A), (L2B) of a resonant inductor (L2) so as to form common parts of magnetic circuit of the multi-winding inductor (L1) and at least two-part (L2A), (L2B) resonant inductor (L2), wherein the transformer winding (L1) of the multi-winding inductor is wound around a column (II), which has at least one air gap (G) having a width adapted so that the magnetic induction produced by the at least two-part (L2A), (L2B) resonant inductor (L2) does not exceed 25% of the magnetic induction produced by the transformer winding (L1) of the multi winding inductor.

Abstract: A magnetic core is provided for an integrated circuit, the magnetic core comprising: a plurality of layers of magnetically functional material; a plurality of layers of a first insulating material; and at least one layer of an secondary insulating material; wherein layers of the first insulating material are interposed between layers of the magnetically functional material to form subsections of the magnetic core, and the at least one layer of second insulating material is interposed between adjacent subsections.

Abstract: A coil component includes a magnetic core, a coil-wire portion wound on the magnetic core, and a case made of a resin covering the magnetic core and the coil-wire portion. The magnetic core is made of a pressed magnetic material powder and forms a closed magnetic circuit. The magnetic core has a lower surface configured to contact a mounting surface. The case has a lower surface configured to contact the mounting surface. The lower surface of the magnetic core includes an exposed-core portion exposed from the case. The exposed-core portion is flush with the lower surface of the case. This coil component enhances the efficiency of heat dissipation.

Abstract: A magnetic connector has a plug core disposed around a plug contact set and a receptacle core disposed around a receptacle contact set. The plug core defines a generally elongated circular plug core edge. The receptacle core defines a generally elongated concentric-circular receptacle core edge. The receptacle core edge defines an air gap and the plug core defines an anchor configured to insert into the air gap. A coil is disposed around the receptacle core, and the coil, the plug core and the air gap define a magnetic circuit. The coil is electrically energized so as to form a magnetic field within an air gap, lock the anchor within the air gap and lock the plug contact set to the receptacle contact set accordingly.

Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.

Abstract: Magnetic components including pre-formed clips are described that are more amenable to production on a miniaturized scale. Discrete core pieces can be assembled with pre-formed coils and physically gapped from one another with more efficient manufacturing techniques.

Abstract: Provided are a multi-phase transformer having an easier-producible structure, and a transformation system wherein a plurality of such transformers are serially connected. Disclosed is a three-phase transformer (Tra) provided with three coils (1u, 1v, 1w) and a pair of magnetic members (21, 22) respectively provided on opposite ends in the axial direction of the coils (1u, 1v, 1w), wherein the coils (1u, 1v, 1w) are respectively provided with first and second sub-coils (11u, 12u; 11v, 12v; 11w, 12w).

Abstract: An inductor element has a support layer, a first conductive layer formed on the support layer and having a first inductor pattern and a first pad at one end of the first inductor pattern, a first insulation layer formed on the support layer and first conductive layer and including a magnetic material layer and a resin layer, a second conductive layer formed on the first insulation layer and having a second inductor pattern and a second pad at one end of the second inductor pattern, and a via conductor formed through the first insulation layer and connecting the first and second conductive layers. The magnetic material layer is covering at least part of the first inductor pattern, the resin layer is covering the first pad and has opening exposing at least part of the first pad, and the via conductor is formed in the opening of the first insulation layer.

Abstract: An inductor includes soft magnetic alloy powder-containing resin that contains amorphous soft magnetic alloy powder, which resin is used as a sealing material that seals a coil wound around a winding core of the core. This soft magnetic alloy powder-containing resin contains two groups of large and small particles having a first peak and second peak in their particle size distribution, where the particle size corresponding to the second peak is equal to or smaller than one-half the particle size corresponding to the first peak, and the magnitude ratio (abundance ratio) of the second peak and first peak is 0.2 or more but 0.6 or less. The inductor demonstrates improved DC superimposition characteristics and does not cause sealing irregularities.

Abstract: A magnetic element is provided, including a magnetic core set, a bobbin, at least a wire, and an insulating base. The bobbin has a channel and a plurality of conductive pins, wherein the channel penetrates through the bobbin, and the magnetic core set is coupled with the channel. The wire is wound around the bobbin and connected to the conductive pins. The insulating base is connected to a bottom surface of the magnetic core set after the wire is wound around the bobbin and connected to the conductive pins, wherein the insulating base includes a plurality of protrusions adjacent to the conductive pins, respectively.

Abstract: A variable coupled inductor includes a first core, two conducting wires, a second core and a magnetic structure. The first core includes two first protruding portions, a second protruding portion and two grooves, wherein the second protruding portion is located between the two first protruding portions and each of the grooves is located between one of the first protruding portions and the second protruding portion. Each of the conducting wires is disposed in one of the grooves. The second core is disposed on the first core. A first gap is formed between each of the first protruding portions and the second core and a second gap is formed between the second protruding portion and the second core. The magnetic structure is disposed between the second protruding portion and the second core and distributed symmetrically with respect to a centerline of the second protruding portion.

Abstract: A method of manufacturing a laminated coil device includes conductors for forming coils and insulation stacking for forming laminated bodies, and further includes the steps of: (A) manufacturing ceramic insulating thin sheets; (B) forming ceramic insulating thin sheets with conductive through-holes; (C) manufacturing coil thin sheets with coil conductors so as to embed the coil conductors inside the ceramic insulating thin sheets; (D) orderly stacking and cutting ceramic insulating thin sheets and coil thin sheets with coil conductors into unit sizes in order to obtain laminated bodies; (E) heating the laminated bodies in order to remove the binder, and then sintering the laminated bodies; (F) coating the conductive paste on the two ends of the laminated bodies so as to form external electrodes. Thus, the present invention is to provide a manufacturing method of producing a laminated coil power device with low direct current resistance, no delamination, no air space, and no lamination cracking.

Abstract: Disclosed herein are an inductor and a manufacturing method thereof. The manufacturing method of an inductor includes: positioning a printed circuit board (PCB) including a predetermined pattern formed thereon and an insertion part formed at one side thereof; fixing a protrusion part formed at a lower portion of a core so as to be inserted into the insertion part; electrically connecting both ends of a coil wound around the core to a lower PCB terminal disposed at a lower portion of the PCB, respectively; and forming an appearance so that the core, the coil, and an upper exposed surface of the PCB are received therein.

Abstract: A magnetic device includes a T-shaped magnetic core, a wire coil and a magnetic body. The T-shaped magnetic core includes a base and a pillar, and is made of an annealed soft magnetic metal material, a core loss PCL (mW/cm3) of the T-shaped magnetic core satisfying: 0.64×f0.95×Bm2.20?PCL?7.26×f1.41×Bm1.08, where f (kHz) represents a frequency of a magnetic field applied to the T-shaped magnetic core, and Bm (kGauss) represents the operating magnetic flux density of the magnetic field at the frequency. The magnetic body fully covers the pillar, any part of the base that is located above the bottom surface of the base, and any part of the wire coil that is located directly above the top surface of the base.

Abstract: A choke includes a single-piece core entirely made of a same material, the single-piece core having two boards and a pillar located between the two boards, a winding space being located among the two boards and the pillar, wherein the pillar has a non-circular and non-rectangular cross section along a direction substantially perpendicular to an axial direction of the pillar, the cross section of the pillar has a first axis and a second axis intersecting with each other at a center of the cross section of the pillar and are substantially perpendicular with each other, the first axis is longer than the second axis, and the cross section of the pillar is substantially symmetrical to both of the first axis and the second axis.

Abstract: In a coil component, a shortest distance from a longitudinal wall of a flange portion of a drum core to a wire fixing portion is smaller than a shortest distance of the longitudinal wall to an electrode wire connecting portion by a convex portion formed at the longitudinal wall of the flange portion. That is, since a gap between the flange portion of the drum core and the wire fixing portion is small (or there is no gap), the wire fixing portion can be sufficiently bent. Accordingly, the wire can be securely fixed by a wire fixing portion of a metal terminal.

Abstract: [Problem] Provided is an injection-molded reactor which has excellent heat dissipation properties and in which the internal temperature of the core can be satisfactorily inhibited from rising due to heat generation when the reactor is in operation. [Solution Means] A material for a core obtained by mixing a soft magnetic powder, a resin binder, and a thermally conductive fibrous filler having a higher thermal conductivity than the soft magnetic powder in accordance with X·(soft magnetic powder)+Y·(thermally conductive filler)+(100-X-Y)·(resin binder), wherein X, indicating the proportion of the soft magnetic powder, is 83 to 96% by mass and Y, indicating the proportion of the thermally conductive filler, is 0.2 to 6.8% by mass, is used to mold a core 16 so that a coil 10 obtained by winding an electric wire is embedded therein without an interval, thereby configuring a reactor 15.

Abstract: The present invention relates to a chip inductor including: a metal-polymer composite in which metal particles and polymer are mixed; a wiring pattern provided inside the metal-polymer composite to form a coil; an external electrode provided in a portion of an outer peripheral surface of the metal-polymer composite; and an insulating portion provided between the metal-polymer composite and the wiring pattern and between the metal-polymer composite and the external electrode, and a method for manufacturing the same.

Abstract: Energy transfer elements having a shield to reduce EMI while maintaining a low profile are disclosed. In one example, the transformer may include a transverse shield wire that may be utilized to keep displacement current within the energy transfer element. While windings of the energy transfer element are generally wound axially around the axis of a bobbin in a direction generally perpendicular to the axis of the bobbin, the transverse shield wire may be placed on the bobbin extending over multiple power windings of the energy transfer element in a transverse direction. The transverse shield wire may be situated outside all other windings wound around the bobbin. In some examples, one end of the transverse shield wire may be coupled to a switching node of the energy transfer element while the other end of the transverse shield wire may be coupled to a winding of the energy transfer element.

Abstract: A magnetic device is provided. The magnetic device includes a magnetic core and a conductive winding inductively coupled to the magnetic core. The conductive winding includes a first terminal segment, a second terminal segment, and an inductive segment electrically coupled in series therebetween. The first terminal segment includes a current sensing element.

Abstract: A method of producing a surface-mount inductor by encapsulating a coil with an encapsulation material containing a resin and a filler using a mold die assembly is provided. In the method, a tablet and a coil are used. The tablet is prepared by preforming the encapsulation material into a shape having a flat plate-shaped portion and a pillar-shaped convex portion on a peripheral thereof. The coil is a wound conductive wire having a cross-section of rectangular-shape. The coil is placed on the tablet to allow both ends of the coil to extend along an outer side surface of the pillar-shaped convex portion of the tablet. The coil and the encapsulation material are integrated together while clamping the both ends of the coil between an inner wall surface of the mold die assembly and the outer side surface of the pillar-shaped convex portion of the tablet, to form a molded body.

Abstract: A core for a wire-wound electronic component. The core has a winding base to be wound with a wire, and flanges located at both ends of the winding base in an extending direction of the winding base. The flanges protrude from the winding base in a first direction perpendicular to the extending direction. Each of the flanges has a plurality of protrusions on a first surface at a side of the flange in the first direction. An inclined surface is provided to extend from the first surface of each of the flanges to a second surface of the winding base at a side of the winding base in the first direction.

Abstract: A linear electromagnetic device, such as an inductor, transformer or the similar device, may include a core in which a magnetic flux is generable. The device may also include an opening through the core. The device may additionally include a primary conductor received in the opening and extending through the core. The primary conductor may include a substantially square or rectangular cross-section. An electrical current flowing through the primary conductor generates a magnetic field about the primary conductor, wherein substantially the entire magnetic field is absorbed by the core to generate the magnetic flux in the core.

Abstract: An inductor includes a stacked structure. The stacked structure includes a substrate, a first structural body stacked on a lower surface of the substrate, and second structural bodies sequentially stacked on an upper surface of the substrate. A through hole extends through the stacked structure in a thickness direction. An insulation film covers the stacked structure. The first structural body includes a first insulating layer stacked on the lower surface of the substrate, and a first wiring stacked on a lower surface of the first insulating layer. The second structural bodies include second insulating layers and second wirings. The first wiring and the second wirings are connected in series to one another to form a helical coil. The substrate has a thickness greater than that of the first insulating layer and the second insulating layers.

Abstract: An electronic component having a laminate having a plurality of insulator layers. A coil is provided consisting of a plurality of coil conductors that are connected by via-conductors piercing through the insulator layers, the coil winding helically about an axis along a direction of lamination. External electrodes are provided on surfaces of the laminate, in which at least some pairs of the coil conductors that neighbor each other with one of the insulator layers provided therebetween have parallel sections that overlap each other when viewed in the direction of lamination. The parallel sections are connected in parallel by the via-conductors or the external electrodes, and each pair of the coil conductors that neighbor each other with one of the insulator layers provided therebetween do not overlap each other when viewed in the direction of lamination, except for the parallel sections, and connections between the coil conductors and the via-conductors.

Abstract: A magnetic device comprises a lead frame, a first core body and a coil. The lead frame has a first portion and a second portion spaced apart from the first portion. A first core body is disposed on the lead frame, wherein the first core body comprises a first through opening and a second through opening. A coil is disposed on the first core body, wherein the coil has a first terminal and a second terminal, wherein the first portion is electrically connected with the first terminal via the first through opening, and the second portion is electrically connected with the second terminal via the second through opening, respectively.

Abstract: A high-frequency module includes a mount board, a wave splitter chip mounted on one principal surface of the mount board and including a transmission filter and a reception filter, a first inductor chip mounted on one principal surface of the mount board and including an inductor, and a second inductor chip mounted on one principal surface of the mount board and including an inductor. The first and second inductor chips are disposed adjacent to each other and each has a polarity. The first and second inductor chips are disposed such that the polarities thereof are opposite to each other, as viewed from the reception filter.

Abstract: A coil component includes a coil element, a body having a square pole shape which accommodates the coil component therein, and a pair of terminals. The first ends of the terminals are respectively fixed to the side surfaces, opposite to each other, of the body. The terminals are bent from the side surfaces toward the bottom surface of the body. The second end of each of the terminals includes corner parts at the both side portions thereof. The bottom surface of the body is provided with recesses at locations not overlapping with the coil component, viewed from the bottom surface. The recesses are recessed from the bottom surface of the body and penetrating to one of the side surfaces. The corner parts of the terminals are locked on the bottom surface of the body, by being bent along inner walls of the recesses.

Abstract: A system for closed-circuit power line communication includes at least a first and second power line connected to at least one electrical device configured to receive a data signal. An auxiliary line is connected to the electrical devices to provide a ground connection, and at least one transmitter generates a first data signal for transmission over the first and second power lines, respectively, to the electrical device. A low-pass common-mode filter is connected to the first and second power lines to provide closed-circuit data communication between the transmitter and the electrical device, the filter comprising at least one coupling capacitor between said first and second power lines such that at least the polarities with respect to ground of said first data signals transmitted over the first and second power lines, respectively, are substantially similar.

Abstract: A magnetic core including a winding core portion; and a flange portion provided on the axial end side of at least one of the winding core portion, wherein the flange portion is formed such that contour line OL1 of cross-section P, of the flange portion, which becomes perpendicular with respect to the axis line of the winding core portion forms a shape of a first irregular convex polygon which is substantially a non-regular polygon and also a convex polygon, and the contour line OL1 contacts with respect to all of sides Sb1, Sb2, Sb3 and Sb4 which are the four sides of a first circumscribed rectangle which becomes minimum within imaginary rectangles circumscribed with the contour line OL1 and also, the contour line OL1 includes side Sa1 and side Sat which respectively overlap with portions of respective ones of the side Sb1 and the side Sb2.

Abstract: A coil component includes a coil section, an outer package, and a pair of outer electrodes. The outer package is made of magnetic material, embeds the coil section therein, and has a bottom face, a top face provided with cut-out sections, a first lateral face, and a second lateral face. Each of the pair of outer electrodes extends from both ends of the coil section, and is pulled out from the first lateral face, and then is bent toward the bottom face, and yet is bent along the bottom face and the second lateral face, and finally is bent toward the cut-out section of the top face. Recesses are formed on the bottom face at places overlapped with the pair of outer electrodes, and each of the outer electrodes is bent to form a projection protruding inside the corresponding recess.

Abstract: A transformer includes a magnetic core, a first coil unit and a second coil unit. The first coil unit is disposed within the magnetic core and includes a laminated board having layers laminated therein and conductive patterns. Respective ones of the conductive patterns are disposed on the laminated layers. The second coil unit includes a conductive wire spaced apart from the conductive patterns of the laminated board by an insulating distance. The conductive wire includes a triple-insulated wire surrounded by three sheets of insulating paper to maintain the insulating distance from the conductive patterns.

Abstract: A transformer includes a magnetic core, a first coil unit and a second coil unit. The first coil unit is disposed within the magnetic core and includes a laminated board having layers laminated therein and conductive patterns. Respective ones of the conductive patterns are disposed on the laminated layers. The second coil unit includes a conductive wire spaced apart from the conductive patterns of the laminated board by an insulating distance. The conductive wire includes a triple-insulated wire surrounded by three sheets of insulating paper to maintain the insulating distance from the conductive patterns.

Abstract: In a power converting transformer, an I-core has a pair of fixing grooves provided at centers on opposite side surfaces of the I-core in a y-direction in an xyz orthogonal coordinate system, the fixing grooves extending through the I-core in the z-direction, and an E-core has a pair of fixing recess portions provided at x-direction centers of the y-direction opposite end portions of the base portion on a surface opposite from a surface of the base portion facing the I-core. The I-core and the E-core are pressed and fixed to each other by a fixing spring wrapped around the I-core and the E-core through the fixing grooves and the fixing recess portions. An x-direction length of the E-core is shorter than an x-direction length of the I-core, and a y-direction length of the E-core is shorter than or equal to a y-direction distance between the fixing grooves of the I-core.

Abstract: A multi-phase coupled inductor includes a magnetic core formed of a powder magnetic material and first, second, third, and fourth terminals. The coupled inductor further includes a first winding forming at least one turn and at least partially embedded in the core and a second winding forming at least one turn and at least partially embedded in the core. The first winding is electrically coupled between the first and second terminals, and the second winding electrically is coupled between the third and fourth terminals. The second winding is at least partially physically separated from the first winding within the magnetic core. The multi-phase coupled inductor is, for example, used in a power supply.

Abstract: A coil component includes: a bar-like core; and a winding part formed of a conducting wire that is wound in a plurality of layers around the outer periphery of the core according to a solenoidal winding method. Winding collapse preventing shifts D1 to D4 each corresponding to a plurality of turns between an end part of a lower winding layer and an end part of an upper winding layer are respectively set to both end parts in the winding width direction of winding layers of the winding part. In transitioning from the lower winding layer to the upper winding layer, the conducting wire is turned back from the end part of the lower winding layer, and is obliquely wound in a small number of turns across each winding collapse preventing shift corresponding to the plurality of turns, and dense winding of the upper winding layer is started.

Abstract: A semiconductor component and methods for manufacturing the semiconductor component that includes a monolithically integrated common mode choke. In accordance with embodiments, a transient voltage suppression device may be coupled to the monolithically integrated common mode choke.

Abstract: A three piece transformer core includes a top having a pair of top lateral faces, namely a top left lateral face and a top right lateral face. The top left lateral face has a lower edge bounded at a top lower left face. The top right lateral face has a lower edge bounded at a top lower right face. A core left side section has a core left side section first leg and a core left side section second leg. The core left side section has a left lateral upper face configured to abut the top lower left face of the top. A core right side section has a core right side section first leg and a core right side section second leg. The core right side section has a right lateral upper face configured to abut the top lower right face of the top.

Abstract: A transformer that improves the DC superposition characteristic without incurring eddy-current losses. In the transformer, a part of a plate-like core opposing a top face of a flange of a drum core is formed with a first opposing portion opposing none of input and output terminals and a second opposing portion opposing the input and output terminals. A first gap is formed between the top face and the first opposing portion by a spacer. A second gap greater than the first gap is formed by a recess of the plate-like core provided so as to correspond to the second opposing portion. This allows magnetic fluxes to pass between the top face and the first opposing portion where the gap is formed and inhibits them from passing between the plate-like core and the input and output terminals where the second gap greater than the first gap is formed.

Abstract: A transformer has two magnetic cores, at least one primary winding unit mounted in the magnetic cores, at least one secondary winding unit mounted in the magnetic cores and two rectifying circuit boards externally mounted beside the magnetic cores. An AC voltage output from the secondary winding unit is transmitted to and rectified by the rectifying circuit board. Therefore, the size of the transformer is compact, and heat energy generated by electronic elements mounted on the rectifying circuit board is effectively dissipated to maintain normal operation of the transformer. Further, since the transmission path from the secondary winding unit to the rectifying circuit board is short, energy loss is reasonably reduced when the transformer is operated under a high frequency situation or a larger current mode.

Abstract: A multi-phase coupled inductor includes a powder core material magnetic core and first, second, third, and fourth terminals. The coupled inductor further includes a first winding at least partially embedded in the core and a second winding at least partially embedded in the core. The first winding is electrically coupled between the first and second terminals, and the second winding electrically is coupled between the third and fourth terminals. The second winding is at least partially physically separated from the first winding within the magnetic core. The multi-phase coupled inductor is, for example, used in a power supply.

Abstract: [Problem] Provided is an injection-molded reactor which has a further reduced loss when the reactor is in operation. [Solution Means] The injection-molded reactor is configured by injection-molding a core using a compound for a core so that a coil obtained by winding a electric wire is embedded in the core without leaving any space therein, the compound being a compound obtained by adding a low-melting-point resin B that has a melting point of 150° C. or lower to a base resin A that is a highly heat-resistant resin with a melting point of 150° C.

Abstract: A method of manufacturing a coil device includes inserting planar insulating sheets into a single conductor formed in a solenoidal coil shape from a direction intersecting with a winding axis direction.

Abstract: Provided is an electromagnetic pipe expanding inductor in which the formation of voids during resin impregnation is suppressed, and electromagnetic reaction forces acting on the conductor periphery and on the interface between the shaft portion and the center-side fiber layer is diminished, and thereby durability is improved and the life of the inductor is prolonged. A glass cloth tape (3) capable of being impregnated with resin is wound around the peripheral surface of a shaft portion of a bobbin (2) to a predetermined thickness, further, a conductor strand (4) coated with a glass cloth tape (6) is wound spirally in the axial direction of the bobbin (2) to form a coil. Further, a glass cloth (7) is wound around the outside of the glass cloth tape (6) to a predetermined thickness and thereafter the glass cloth tapes (3, 6) and the glass cloth (7) are impregnated with resin to unite them.

Abstract: A reactor 1? includes one coil 2, a magnetic core 3 to which the coil 2 is arranged, and a case 4 containing an assembly 10 of the coil 2 and the magnetic core 3. The magnetic core 3 includes an inner core portion 31 inserted into the coil 2, and a coupling core portion 32 disposed around the coil 2. The coupling core portion 32 is made of a mixture of magnetic powder and resin. The coil 2 is covered with the coupling core portion 32 and is enclosed within the case 4 in a sealed state. The reactor 1? includes, in an outermost surface region exposed at an opening of the case 4, a magnetic shield layer 5 made of non-magnetic powder, having smaller specific gravity than the magnetic powder and having electrical conductivity, and the resin. A small reactor capable of reducing magnetic flux leaked to the outside is thereby provided.

Abstract: Disclosed herein are embodiments of devices for measuring electrical current and related systems and methods for forming and using such devices. According to certain embodiments, devices according to the present disclosure may comprise Rogowski coils. Also disclosed are systems and methods for forming a current measuring device using a bobbin that may allow for the use of a continuous length of wire for all windings associated with the current measuring device. Automated manufacturing techniques may be utilized to facilitate the manufacture of devices for measuring electrical current and/or may reduce the cost of such devices. Various embodiments disclosed herein include the use of a bobbin that may be selectively configured between a linear configuration and a closed configuration. One or more current sensors disclosed herein may be utilized in connection with a motor management relay or other type of intelligent electronic device.