Abstract: A transformer of dry design is disclosed having a core composed of amorphous material, which is sensitive to mechanical loads, having at least one winding former which surrounds the core and is in each case formed from at least one primary winding and secondary winding, and having at least one holding apparatus. A method for transformer production is also disclosed, wherein the holding apparatus is used to fix the at least one primary winding and secondary winding in each case and for this purpose it acts on each of the end faces of the at least one winding former.

Abstract: A cost effective solution for construction of high frequency, double ended, isolated, push pull, center tapped power transformers operating in continuous/discontinuous mode with minimized winding proximity losses comprises at least two identical sets of windings with identical coupling coefficients. Each set of windings consists of at least one primary winding and at least one secondary winding tightly coupled to each other. Both the sets of windings are loosely coupled to each other with a magnetic field isolating separator.

Abstract: In a high frequency transformer, when a current flows between input-output ports, a magnetic flux produced by first and third coil conductor patterns of a primary coil is interlinked with a second coil conductor pattern of a secondary coil. A magnetic flux produced by the second coil conductor pattern of the primary coil is interlinked with the first and third coil conductor patterns of the secondary coil. The coil conductor patterns are wound so that when a current flows through a transformer, the directions of magnetic fields occurring within the first and third coil conductor patterns of the primary coil and the second coil conductor pattern of the secondary coil are the same and the directions of magnetic fields occurring within the first and third coil conductor patterns of the secondary coil and the second coil conductor pattern of the primary coil are the same.

Abstract: A transformer comprises a circuit board, an iron core, a winding set and a plurality of magnetic conduction elements. The circuit board has a plurality of electric conduction holes connected via at least one power connection wire. The iron core is located on the circuit board and has a first winding section and a second winding section. The winding set is wound on the first winding section. Each magnetic conduction element has a connecting section located on the iron core and an input section and an output section inserted into the electric conduction holes. The output section of one magnetic conduction element is connected to the input section of another magnetic conduction element through the power connection wire, thereby the magnetic conduction elements and power connection wire form a magnetic conduction winding set which generates magnetic coupling with the winding set through the iron core.

Abstract: A common mode filter includes first and second wires wound around a winding core portion by the same number of turns. Each of the first and second wires is wound by a number m1 of turns in a first winding area and wound by a number m2 of turns in a second winding area. A distance D1 between an n1th turn (1?n1?m1?1) of the second wire and an n1+1th turn of the first wire is shorter than a distance D2 between an n1th turn of the first wire and an n1+1th turn of the second wire in the winding area. A distance D3 between an n2th (m1+1?n2?m1+m2?1) turn of the first wire and an n2+1th turn of the second wire is shorter than a distance D4 between an n2th turn of the second wire and an n2+1th turn of the first wire in the winding area.

Abstract: Methods and apparatus described herein are associated with integrated magnetic induction devices. A magnetic induction device can include a groove formed in a substrate, a magnetic core included in the groove and surrounded by a conductive winding that is adjacent to portion(s) of the substrate, and respective insulation layers included between the substrate and the conductive winding and between the magnetic core and the conductive winding. An inductor can further include conductive vias formed in the substrate and connected to respective portions of the conductive winding. Further, a transformer can include a groove formed in a substrate, a closed-loop/gapped magnetic core included in the groove and surrounded by first and second conductive windings that are adjacent to respective portions of the substrate, and respective insulation layers formed between the substrate and the first and second conductive windings, and between the closed-loop/gapped magnetic core and the first and second conductive windings.

Abstract: An embodiment apparatus comprises a magnetic core comprising a first side and a second side opposite the first side, a first winding comprising a first portion wound around the first side and a second portion wound around the second side, a second winding comprising a third portion wound around the first side and a fourth portion wound around the second side, wherein the second portion and the fourth portion are coupled to each other.

Abstract: A rolled-up transformer structure comprises a multilayer sheet having a rolled configuration comprising multiple turns about a longitudinal axis. The multilayer sheet comprises more than one conductive pattern layer on a strain-relieved layer, including a first conductive film and a second conductive film separated from the first conductive film in a thickness direction. The first conductive film comprises an even number of primary conductive strips, where each primary conductive strip has a length extending in the rolling direction, and the second conductive film comprises an even number of secondary conductive strips, where each secondary conductive strip has a length extending in the rolling direction. In the rolled configuration, turns of the primary conductive strips and turns of the secondary conductive strips wrap around the longitudinal axis. The primary conductive strips serve as a primary winding and the secondary conductive strips serve as a secondary winding of the rolled-up transformer structure.

Abstract: There is provided a thin transformer capable of being used in a thin display device such as a liquid crystal display (LCD) device and a light emitting diode (LED) display device. The transformer includes: a bobbin part including a plurality of bobbins, each including a pipe shaped body part having a though-hole formed in an inner portion thereof, a flange part vertically protruding outwardly from both ends of the body part, and a terminal connection part protruding from one side of a lower flange part formed at a lower end of the body part and having external connection terminals connected thereto; a core inserted into the through-hole of the bobbin to thereby form a magnetic path; and a coil part including coils each wound around the plurality of bobbins, wherein the bobbin part includes an outer bobbin and an inner bobbin inserted into the through-hole of the outer bobbin to thereby be coupled thereto, and the terminal connection part of the inner bobbin protrudes in an outer diameter direction thereof.

Abstract: This magnetic ring is formed by an upper U-shaped part and a lower U-shaped part, each upper and lower part comprising two vertical arms each introduced into a respective hole of the printed circuit board, each arm of the upper part being superimposed, within the respective hole and in a horizontal direction, on the corresponding arm of the lower part to set up magnetic continuity between these two parts of the magnetic ring.

Abstract: An exemplary transformer winding including at least two hollow-cylindrical, axially adjacent winding modules, which are arranged about a common winding axis and have an electrical conductor wound in layers, and a common electrical insulting layer, through which the winding modules are enveloped. The insulating layer has at least one annular, radial depression or annular, radial elevation, which is salient transversely to the winding axis on the radial outer face of said insulating layer.

Abstract: A surge blocking inductor. In one embodiment, the surge blocking inductor comprises a core; a first winding wound about the core in a first direction; and a second winding wound about the core in a second direction, wherein the first winding and the second winding are magnetically independent when the core is in a non-saturated state, and wherein the first winding and the second winding are coupled magnetically when the core is in a saturated state.

Abstract: A composite isolating transformer includes a main winding rack and a support rack. The main winding rack includes two winding portions coaxially formed to hold respectively a primary coil and a secondary coil, and a separating portion between the two winding portions. The support rack includes a first support half member and a second support half member coupling together to encase at least one winding portion. The first and second support half members have respectively a first cover and a second cover to cover two lateral sides of the winding portion, respectively a first insulating portion and a second insulating portion corresponding to the separating portion and extending towards the separating section to couple together, and respectively a first isolating portion and a second isolating portion extended from the first and second insulating portions towards the winding portion to cover another two lateral sides of the winding portion.

Abstract: A transformer includes a first loops and second loops. The first loops include a first set of input terminals. The first loops include at least three loops that are conductively coupled to each other in series by first crossovers. The second loops include a first set of output terminals. The second loops include at least three loops that are conductively coupled to each other in series by second crossovers. Each of the second conductive loops is inductively coupled to and nested within a respective one of the first conductive loops.

Abstract: A method for manufacturing a spiral coil, the method including: forming a solenoid having a diameter larger than a length by spirally winding an insulated electric wire; forming a spiral coil having folded corners by folding four corners in a circumference direction with respect to the solenoid; fixing the folded corners of the spiral coil; and fixing two terminal portions corresponding to start and end points of the spiral coil to a fixing module. According to the method, a thin and long spiral coil having folded corners is easily manufactured by using a general insulated electric wire. In addition, the spiral coil manufactured by using such a method is applicable to a surface radio frequency (RF) coil optimized for various applications of an electro-magnetic acoustic transducer (EMAT) and enables easy access to an optimized transducer.

Abstract: An information transmission system is provided with a transmission coil and a reception coil respectively provided along a first surface and a second surface that face each other proximal to each other. The transmission coil and reception coil are provided proximally to be electromagnetically coupled to each other. The winding wire of the transmission coil is wound on the first surface, and the winding wire of the reception coil is wound on the second surface. The information transmission system is provided with a magnetic body provided proximately so as to be electromagnetically coupled to the transmission coil and the reception coil to cover at least one part of a region in which at least the winding wires of the transmission coil and reception coil are present between the first surface and the second surface.

Abstract: A voltage transforming apparatus includes a primary winding receiving an AC voltage, a plurality of secondary windings that are different in number of turns, and a voltage conversion circuit for converting an AC voltage induced in each of the plurality of secondary windings. Each of the plurality of secondary windings includes the first terminal and the second terminal each having a potential that is not fixed. The first terminal and the second terminal are separately provided in each of the secondary windings. The voltage transforming apparatus further includes a switching circuit for selectively connecting the first terminal and the second terminal of each of the plurality of secondary windings to the voltage conversion circuit.

Abstract: A non-contact transformer assembly comprises an iron core having a pole with a length longer than the total height of the transmitting coil and the receiving coil to improve the induced voltage and magnetic field of the receiving coil and achieve the high effect of flux conversion.

Abstract: In one embodiment, a current transducer is provided. The current transducer includes a magnetic core configured to at least partially encircle a magnetic flux generated by a conductor. At least one coil is coupled to the magnetic core and the magnetic core comprises a superm-alloy material.

Abstract: A magnetic device and power converter employing the same. In one embodiment, the magnetic device includes a first L-core segment including a first leg and a second leg extending therefrom, and an opposing second L-core segment including a first leg and a second leg extending therefrom. The magnetic device also includes a winding formed around at least one of the first leg and the second leg of the first L-core segment or the second L-core segment.

Abstract: The present invention provides a transformer having assembled bobbins and a voltage transformation module having the transformer. The transformer includes a base, bobbins, secondary windings and two magnetic cores. The base is provided with a penetration hole. The bobbins are disposed in the base and each has an annular groove, a hollow portion corresponding to the penetration hole, and protrusions formed on a surface of the bobbin. The protrusions form a gap between the two adjacent bobbins when the two adjacent bobbins are assembled with each other. The secondary windings are disposed between the bobbins and each has a through-hole corresponding to the hollow portion. The two magnetic cores penetrate the penetration hole of the base, the hollow portions of the bobbins, and the through-holes of the secondary windings to assemble them together.

Abstract: A three phase fault current limiter (FCL 6) has three spaced apart input terminals (7) for electrically connecting to respective terminals (5) of a transformer (2). Three output terminals (8) electrically connect FCL (6) with a load circuit (9) which draws load current ILOAD. FCL (6) includes a multi-post magnetically saturable core (11) and three AC coils (12, 13 and 14) for electrically connecting terminals (7) to respective terminals (8). Coils (12, 13 and 14) allow ILOAD to flow from a power station (4) to circuit (9). Coils (12, 13 and 14) include respective pairs of series connected high voltage cables (15a and 15b, 16a and 16b and 17a and 17b) wound about core (11). Two generally triangular spaced apart DC coils (19, 20) induce a magnetic field in at least that portion of core (11) about which the cables are wound. The field magnetically biases core (11) such that coils (12, 13 and 14) individually move from a low impedance state to a high impedance state in response to ILOAD approaching IMAX.

Abstract: An exemplary transformer winding including at least two hollow-cylindrical, axially adjacent winding modules, which are arranged about a common winding axis and have an electrical conductor wound in layers, and a common electrical insulting layer, through which the winding modules are enveloped. The insulating layer has at least one annular, radial depression or annular, radial elevation, which is salient transversely to the winding axis on the radial outer face of said insulating layer.

Abstract: A current transformer supplying a power for an electronic controller comprises two independent core magnetic circuits, wherein a first core magnetic circuit is a closed loop formed by connecting a U-shaped core and a linear core, a primary conductor extends through the closed loop, and a secondary winding for power supply is wound on the linear core; a second core magnetic circuit having an opening shape is disposed in parallel to the linear core of the first core magnetic circuit, and the open end of the second core magnetic circuit is coupled to the first core magnetic circuit through air gaps. The area of the cross section of the linear core is less than that of the cross section of the U-shaped core, so that the linear core can be magnetically saturated earlier than the U-shaped core. The centerline length of the U-shaped core is 1.5 to 4 times of that of the linear core.

Abstract: A magnetic flux pad (BPP) is provided for receiving magnetic flux. The pad may be used with an inductive power transfer system, and comprises a magnetically permeable core (4) and two substantially flat overlapping coils (2, 3) magnetically associated with the core (4).

Abstract: A laminar transformer having double-face secondary winding includes a primary winding part and a secondary winding part. The primary winding part further includes an isolating body seat and a plurality of coil sets. The secondary winding part further includes two plate-body set, each being positioned in the containing channel has a plurality of plate bodies and a plurality of insulating bodies. Each of the plate bodies has an opening for containing the central column and a guided channel that being positioned on a side of the opening has on both side thereof a pole lead respectively. The insulating bodies being a ring-shaped structure and being positioned in-between the plate bodies has a through hole for containing the central column. The plurality of plate bodies are laminated alternately and positioned in the central column making each of the plate-body sets form the one with four pole leads.

Abstract: A super high power transformer includes a base, a plurality of plate bodies, and a plurality of isolating bodies. The base further includes a main core part, a plurality of opening slots, and a plurality of side wing parts. The main core part has a penetrating hole at the center thereof. Each of the plate bodies has an open hole for slipping on the main core part and a guided slot that has a pole lead on both sides thereof. Each of the isolating bodies has a through hole for slipping on the main core part and a guided slot. There is also a pole lead positioned on both sides of the guided slot. To be slipped on the main core part, the plurality of plate bodies and the insulating bodies are alternately stacked up with the plate bodies staggering in turning a 90-degree angle apart sequentially.

Abstract: A composite electrical insulation material is comprised of first, second and third layers. The first and third layers are glass fiber mat and the second layer is a thin film material. The first and third layers are bonded to the second layer using a thin resin solution. The insulation is used in electrical machines such as transformers, generators, and motors. The insulation serves as a high/low barrier, high voltage conductor wrap, and low voltage sheet insulation in transformers. In generators and motors, the insulation serves as wrap for conductor windings and wedge insulation for stator and rotor assemblies.

Abstract: A network transformer module includes a first magnetic element, a second magnetic element, and a connection board. The first magnetic element includes a first winding set and a first core, and the first winding set is wound around the first core. The second magnetic element includes a second winding set and a second core, and the second winding set is wound around the second core. The first winding set of the first magnetic element is independent from the second winding set of the second magnetic element, and the first winding set is not wound around the second core. The connection board electrically couples the first winding set with the second winding set. A magnetic element is also disclosed herein.

Abstract: A magnetic device including a first magnetic core is disclosed. The first magnetic core includes a base having a first edge; a first contacting structure disposed on the base; and a second contacting structure disposed on the base, wherein a distance between an inner surface of the first contacting structure and the first edge is larger than a distance between an inner surface of the second contacting structure and the first edge.

Abstract: An inductor including common mode and differential mode flux paths. The inductor comprises a first core having a first connecting portion. A first segment extends from a first end of the connecting portion. A second segment extends from a second end of the connecting portion and first bridge segment extends from a middle of the connecting portion. A first wiring arrangement is at least partially disposed around the first segment. A second core has a second connecting portion. A third segment extends from a first end of the connecting portion. A fourth segment extends from a second end of the connecting portion and a second bridge segment extends from a middle of the connecting portion. A second wiring arrangement is at least partially disposed around the third segment. A first suspension connects the first segment to the fourth segment. A second suspension connects the second segment to the third segment.

Abstract: A transformer in this invention comprises substrates constructing a primary winding, substrates constructing the secondary winding, and a core member disposed around the substrates. The substrates defining the primary winding are provided with insertion holes for passing a middle leg portion of the core member, and patterned conductors having one turn. The transformer further comprises an interlayer connection member. The interlayer connection member is located inwardly of the patterned conductors of the substrates defining the primary winding. The interlayer connection member is located on the same side of the patterned conductors defining the primary winding. The interlayer connection member is configured to establish the electrical connection of the patterned conductors defining the primary winding.

Abstract: Apparatus and method for measuring current drain and reporting power consumption using current transformer with primary windings made of low ohmic alloy, enabling the use of the secondary coil to power the sensing and reporting circuits eliminating the power wasted by AC-DC power adaptors used for the current sensors. The saving is substantial as the current sensors will not drain a current when the AC outlets are disconnected from a load or when the load is switched off. The apparatus using low ohmic alloy is extended to the structuring of terminals, including power pins, power sockets and combinations to provide a low ohmic sensing elements in AC plugs, outlets, adaptors and extension cables with multi outlets, dissipating the heat from the sensing elements by the plugs and the larger metal heat dissipation.

Abstract: Provided is a one-input and two-output type insulating transformer which can secure a desired insulation distance between the primary and secondary sides with a simple structure without causing an increase in the size of the product as a whole. The insulating transformer includes a first tube-shaped bobbin 1 around which a primary coil is wound, a second tube-shaped bobbin 2 in which a housing section 16 of the first bobbin 1 is formed between two winding sections 10 around each of which a secondary coil 9 is wound, and a core member 20 which forms a closed magnetic circuit by an inner core 7a inserted into hole sections 8 and 11 of the first and second bobbins 1 and 2, and by an outer core 7b arranged along the outer periphery of the second bobbin 2.

Abstract: An electromagnetic connector is disclosed that is configured to form a first magnetic circuit portion comprising a first core member and a first coil disposed of the first core member. The electromagnetic connector is configured to mate with a second electromagnetic connector, where the second electromagnetic connector is configured to form a second magnetic circuit portion comprising a second core member and a second coil disposed of the second core member. The first core member and the second core member are configured to couple the first coil to the second coil with a magnetic circuit formed from the first magnetic circuit portion and the second magnetic circuit portion when the electromagnetic connector is mated with the second electromagnetic connector. The magnetic circuit is configured to induce a signal in the first coil when the second coil is energized.

Abstract: A coil device 10 comprises a first bobbin 40 having a first bobbin plate 42 provided with a first hollow cylinder 44 on which a primary coil 20 is wound at the outer periphery, and a second bobbin 50 mounted on the first bobbin 40 and having a second bobbin plate 52 provided with a second hollow cylinder 54 on which a secondary coil 30 is wound at the outer periphery. A winding center C1 of the primary coil 20 and a winding center C2 of the secondary coil 30 displace with a predetermined displacement (Lx) along a predetermined reference direction X.

Abstract: Disclosed herein are coil parts including: a lower magnetic substance; a primary coil pattern disposed on the lower magnetic substance; a first complex layer for covering the primary coil pattern; a secondary coil pattern correspondingly disposed on an upper side of the primary coil pattern; a second complex layer for covering the secondary coil pattern; and an insulation layer disposed between the primary coil pattern and the secondary coil pattern and blocking an electrical connection between the primary coil pattern and the secondary coil pattern. The coil parts according to the present invention can have a simple structure and processing capable of increasing magnetic permeability and accordingly improving an impedance characteristic of the coil parts, thereby implementing excellent performance and characteristic.

Abstract: A transformer assembly. In some embodiments, the transformer assembly comprises a transformer, comprising a magnetic core; a primary winding wound around the magnetic core, wherein the primary winding comprises one or two turns of a first conductive material; and a secondary winding wound around the magnetic core, wherein the secondary winding comprises a plurality of turns of a second conductive material, and wherein a diameter of the magnetic core is sized such that the transformer achieves a first inductance with a core loss comparable to a winding loss.

Abstract: A second inductor is disposed opposite to a first inductor and rotated around the center axis by 180°. The first inductor includes a plurality of lines concentrically formed in a first wiring layer, and a first intersection that is formed in a first area and connects a first line with a second line. The first intersection includes a first connection line formed in a second wiring layer, and a first interlayer line connecting the first and second lines with the first connection line. The second inductor includes a plurality of lines concentrically formed in a third wiring layer, and a second intersection that is formed in a second area and connects a third line with a fourth line. The second intersection includes a second connection line formed in a fourth wiring layer, and a second interlayer line connecting the third and fourth lines with the second connection line.

Abstract: A transformer is provided having good workability during production and good connection of the secondary main coil and the primary supportive coil. The transformer has a bobbin with a base part and first hollow cylinder part with a first through hole and a core projecting in a first positive direction from said base part, and a case having an upper collar part formed with a primary main coil wound around said first hollow cylinder part, a second through hole leading to said first through hole, and a second hollow cylinder part formed at the outer peripheral face. Said primary main coil is housed and projects in a first negative direction from said upper collar part. A lower collar part opposes said base part by extending approximately parallel to said mounting face. The primary supportive coil and secondary main coil are wound around said first and second sections, respectively.

Abstract: An integrated magnetic element includes a conductive base, a bobbin, a winding coil, a first magnetic core assembly and a second magnetic core assembly. The conductive base includes a first conductive unit including a plurality of first conductive winding parts, a second conductive unit including at least one second conductive winding part, and a connecting part. The bobbin includes a bobbin body, a winding section, a channel and a plurality of insertion slots. The first conductive winding parts are inserted into corresponding insertion slots of the bobbin. The first magnetic core assembly is sheathed around the bobbin and partially embedded into the channel of the bobbin and the first holes of the first conductive winding parts. The second magnetic core assembly is sheathed around the second conductive unit of the conductive base and partially embedded into the second hole of the second conductive winding part.

Abstract: An integrated magnetic element includes a conductive base, a bobbin, a winding coil, a first magnetic core assembly and a second magnetic core assembly. The conductive base includes a first conductive unit including a plurality of first conductive winding parts, a second conductive unit including at least one second conductive winding part, and a connecting part. The bobbin includes a bobbin body, a winding section, a channel and a plurality of insertion slots. The first conductive winding parts are inserted into corresponding insertion slots of the bobbin. The first magnetic core assembly is sheathed around the bobbin and partially embedded into the channel of the bobbin and the first holes of the first conductive winding parts. The second magnetic core assembly is sheathed around the second conductive unit of the conductive base and partially embedded into the second hole of the second conductive winding part.

Abstract: A manufacturing method of a coil component comprises a forming step to form a first coil and a second coil connecting to each other, wherein the first coil is disposed at the inside of the second coil; a disposing step to dispose a part of a tail segment of the first coil on a last-loop segment of the second coil along a contour of the last-loop segment of the second coil; and a covering step to cover the first coil and the second coil.

Abstract: An amorphous core transformer is provided which is capable of effectively suppressing influences, fluctuation, displacement or the like of a coil caused by an electromagnetic mechanical force or the like. In an amorphous core transformer 100 including an amorphous core 101, a plurality of coils 102 in which the amorphous core 101 is inserted and a fixing metal frame 110 that assembles the coils 102 and the amorphous core 101, the inter-coil member 106 is interposed between the neighboring coils 102 and the inter-coil member 106 is positioned and held by a positioning member 107. Thus, it is possible to prevent the coils 102 from being deformed or displaced beyond the inter-coil member 106 and maintain the shape of the coils 102.

Abstract: A signal status diagnosing device of an external control unit, including an insulation transformer having a primary side, a secondary side and an intermediate tap at a midpoint of the primary winding, the secondary side is connected the external control unit. The device further includes a signal generating unit for generating a periodically vibrating voltage which is connected to the primary side of the insulation transformer, a switch circuit which is connected to the intermediate tap of the primary winding of the insulation transformer, the switch circuit has a switch and a resistance being connected to the intermediate tap in parallel with each other, and a current measuring unit connected to the switch circuit and configured to measure a first current which flows in the switch or the resistance to diagnose signal status of the external control unit.

Abstract: Provided are a reactor which can perform step-up/step-down operations and soft switching with a small size and a smaller leakage inductance, and a method of adjusting a leakage inductance of the reactor. A reactor 1A includes a magnetic core 10A having a pair of inner core portions and forming a closed magnetic path, a main coil 11A having main coil elements 11a and 11b, and a sub-coil 12A having sub-coil elements 12a and 12b. The coil elements 11a and 12a are concentrically layered over one of the inner coil portions, and the coil elements 11b and 12b are concentrically layered over the other inner coil portion. One end portion of a wire 11w of the main coil 11A and one end portion of a wire 12w of the sub-coil 12A are joined to each other. A spacing between adjacent turns constituting the sub-coil element 12a (12b) is wider than that between adjacent turns constituting the main coil element 11a (11b). Thus, the reactor 1A has a smaller leakage inductance.

Abstract: An apparatus includes a first conductive loop coupled to conduct a first current and a second conductive loop coupled in parallel with the first conductive loop and further coupled to conduct a second current. A first conductive portion forms a part of the first conductive loop and the second conductive loop. The first conductive portion is coupled to conduct the first current and the second current. In at least one embodiment of the apparatus, the first conductive loop and the second conductive loop are planar inductors formed in a conductive layer on a substrate of an integrated circuit.

Abstract: An inductor is formed on a wafer by attaching a first core structure to the wafer with a pick and place operation, forming a coil with one or more thick metal layers over the first core structure, and then attaching a second core structure to the first core structure with the pick and place operation after the coil has been formed. In addition, the pick and place operation can also be used to attach one or more integrated circuits to the wafer to form an integrated inductive device.

Abstract: A transformer includes: a core portion, which forms a magnetic circuit; a coil bobbin, which has a winding core portion to be wound by a winding wire, and which is attached on the core portion; a primary winding wire, which has a plurality of first divided winding wire portions divided in parallel; and a secondary winding wire, which has a plurality of second divided winding wire portions divided in parallel, wherein the plurality of first divided winding wire portions and the plurality of second divided winding wire portions are layered on the winding core portion, wherein at least one of the first divided winding wire portions becomes a first layer which is closest to the winding core portion, and at least one of the other of the first divided winding wire portions is interposed between two of the second divided winding wire portions.

Abstract: An embodiment integrated common mode choke comprises a magnetic core, a magnetic plate, a first winding coil and a second winding coil. The magnetic plate is inserted within an inner circumference of the magnetic core. The first winding coil and the second winding coil are wound are wound in the same direction through the magnetic core. The integrated common mode choke is equivalent to a common mode choke and a differential mode choke connected in series. The inductance value of the differential mode choke can be changed by adjusting either the gap between the magnetic plate and the magnetic core or the thickness of the magnetic plate.