Abstract: In one embodiment, the inductor includes: a substrate, arranged with multiple lower conducting layers, a magnetic core, disposed on the substrate, and an insulating cover, covering the substrate and wrapping the magnetic core. Multiple upper conducting layers are arranged on a surface of the insulating cover. The upper conducting layers and the lower conducting layers are alternately connected to form at least one coil winding around the magnetic core. Two ends of the coil are respectively used to conduct external electrical signals.

Abstract: In accordance with embodiments of the present disclosure, a multi-tap integrated transformer may include one or more windings, wherein each of the one or more windings include at least one pair of primary taps for receiving at least one differential input signal, a first pair of secondary taps for outputting a first output signal, and a second pair of secondary taps for outputting a second output signal. The first and second output signals may be based on the at least one differential input signal and a mutual inductance between portions of the one or more windings associated with the at least one pair of primary taps, the first pair of secondary taps, and the second pair of secondary taps.

Abstract: A high voltage transformer includes an elongate core of a ferromagnetic material. A plastic transformer frame has segment walls arranged perpendicular to the core. A secondary-winding is wound around the core in winding segments divided by the segment walls. A primary winding is formed of conductor segments to provide a loop around the core. At least one of the conductor segments is a connection pin molded in one of the segment walls.

Abstract: The invention relates to a method and an arrangement for winding a winding wire onto a winding body, and to an associated magnet assembly. The start of the winding wire is threaded into a first wire-receiving slot of a first electrical connection dome. By a winding operation a predefinable number of turns are then wound onto the winding body, and one end of the winding wire is threaded into a second wire-receiving slot of a second electrical connection dome and cut off. According to the invention, the start of the winding wire which has been threaded into the first wire-receiving slot is placed on a first wire support which is arranged downstream of the first wire-receiving slot.

Abstract: A sheet type transformer includes a primary winding 1 formed in the shape of a flat plate; and a secondary winding 6 wound around an axis perpendicular to the face of the primary winding 1, wherein the end 6a of the secondary winding 6 on the radially central side thereof is drawn out in the direction perpendicular to the face of the primary winding 1.

Abstract: A transformer has primary coils and secondary coils that are arranged in a laminated manner in a direction of a winding axis and are mutually insulated. The secondary coils are composed of conducting plates in a plurality of layers arranged in the laminated manner in the direction of the winding axis, and the conducting plates are electrically connected in series. Connecting portions between the each conducting plates are arranged in an inner space of the primary coils.

Abstract: An improved choke assembly for a power electronics device is provided. More specifically, a choke assembly with improved protection from environmental conditions such as dirt and water is provided. An improved choke assembly may include an insulative housing for an inductor coil that seals the inductor coil from the environment.

Abstract: A high-voltage transformer has a plurality of elementary transformers. Each elementary transformer comprises an elementary primary circuit configured to be powered by an elementary primary voltage, an elementary secondary circuit comprising at least one secondary winding and at least one capacitor that is connected to the terminals of a secondary winding, and an elementary magnetic circuit configured to couple the elementary primary circuit and the elementary secondary circuit. The output voltage of the transformer is equal to the sum of the elementary balanced secondary voltages, and the elementary primary circuits are connected to one another so as to form a common circuit with the elementary transformers. The common circuit is configured to be supplied by a primary voltage, which is equal to the sum of the elementary primary voltages.

Abstract: A method is provided that utilizes silicon through via technology, to build a Toroid into the chip with the addition of a layer of magnetic material such as Nickel above and below the T-coil stacked multi-ring structure. This allows the connection between the inner via and an array of outer vias. This material is added on a BEOL metal layer or as an external coating on the finished silicon. Depending on the configuration and material used for the via, the inductance will increase approximately two orders of magnitude (e.g., by utilizing a nickel via core). Moreover, a ferrite material with proper thermal conduction properties is used in one embodiment.

Abstract: An electrical device is produced by winding wires around a core. The device may be used as a transformer. Wires are inserted into, through and around a first hole and a first side of a core a desired number of times. Thereafter, the wires are extended along either a top or a bottom of the core and then passed through and around a second hole of the core. After the wires are wound around the second hole of the core and a second side of the core, the production of the device is complete.

Abstract: A transformer includes: a bobbin on which a coil is wound; a core coupled with the bobbin to provide a magnetic flux and installed on the PCB in a penetrating manner; and a base plate electrically connected to the coil and having a lead frame connected to the PCB, wherein the lead frame is formed such that the base plate is separated from an upper surface of the PCB.

Abstract: A transformer for reducing the electromagnetic interference (EMI) effect is disclosed. The transformer includes a bobbin; a magnetic core assembly partially sleeved by the bobbin; a first primary winding coiled around the bobbin; a secondary winding coiled on the first primary winding; and a first shielded element disposed between the first primary winding and the secondary winding for disconnecting the EMI transmission from the first primary winding to the secondary winding. The first primary winding includes a first winding portion and a second winding portion, and the first winding portion has larger EMI comparing to the second winding portion. The first winding portion of the first primary winding is adjacently disposed to the magnetic core assembly for shielding the EMI of the first primary winding by using the magnetic core assembly.

Abstract: A communication interface unit of a facsimile and a transformer for preventing a power source noise. The communication interface unit includes the transformer between a line unit and a MODEM for electrically separating the circuit boards of the line unit and the MODEM for preventing the power source noise causing data transmission error from flowing into the line unit. Also, a method for bonding the ferrite core and the housing in order to prevent damage to the transformer caused by an external force and minimizing generation of capacitance component by bonding. The bonding method can be more effectively implemented when an integrated circuit type data access arrangement circuit is used for accessing the PSTN. The present invention can prevent distortion of data generated by power source noise such as EFT and also prevent the ferrite core slipping off from the housing.

Abstract: A winding assembly for a transformer includes a wire winding and a sheet winding. The wire winding includes a spirally wound insulated wire and the sheet winding includes a metallic winding sheet that forms a single turn winding. Instead of winding the wire winding on a bobbin, sleeve or the like, the wire winding is attached directly to a surface of the winding sheet by means of a self-bonding technique.

Abstract: A transformer 10 has a first core CR1, a second core CR2, a first transformer primary winding W1, a coil 45, a coil 46 and a coil 47. The second core CR2 is integrally formed with the first core CR1. The first transformer primary winding W1 is wound onto the first core CR1. The coil 45 is wound onto the first core CR1 and forms a transformer T1 together with the first transformer primary winding W1. The coil 46 is wound around the first core CR1 and forms a transformer T2 together with the first transformer primary winding W1. The coil 47 is connected to the coil 45 and coil 46 and forms an output coil using the second core CR2 as a magnetic core.

Abstract: A wire-wound coil has a characteristic impedance that can be flexibly adjusted and can be prevented from varying undesirably. In the coil of the present invention, a primary wire part 18A and a secondary wire part 18B are wound around the surface of a core portion 14 so as to be separated from each other by a fixed distance. At the same time, at least one portion the secondary wire part 18B in a prior turn section 19X and at least one portion of the primary wire part 18A in a subsequent turn section 19Y are in close contact with each other, wherein the wire parts 18A and 18B are wound in different turns and are adjacent to each other on the same surface of the core portion 14. A method for manufacturing the wire-wound coil is also disclosed.

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

Abstract: An apparatus and method for reducing stray magnetic fields include a decoupling circuit includes a balun that comprises a transmission line. The transmission line includes a first spiral positioned substantially parallel to a first plane, the first spiral emanating from a inner portion of the first spiral in a first spiral direction. The transmission line also includes a second spiral positioned substantially parallel to the first plane, the second spiral emanating from a inner portion of the second spiral in the first spiral direction, wherein the inner portion of the first spiral is electrically coupled to the inner portion of the second spiral, and wherein the transmission line comprises a signal line and a ground line. The balun further comprises a first capacitor electrically coupled to the transmission line.

Abstract: A communications transformer in which the primary and secondary windings are each divided into equal halves is disclosed. One primary and one secondary half winding is disposed about one section of a magnetic core, while the other halves are disposed about a second, parallel section. Voltages in the primary half windings and secondary half windings caused by stray magnetic fields are subtracted.

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

Abstract: An Inductive Power Transfer (IPT) pick-up apparatus includes a magnetically permeable core, a first coil, being wound about the core so as to be inductive coupled therewith such that a current induced in the first coil is most sensitive to a first directional component of magnetic flux and a second coil, being wound about the core so as to be inductively coupled therewith such that a current induced in the second coil is most sensitive to a second directional component of magnetic flux. The first directional component is substantially orthogonal to the second directional component.

Abstract: In accordance with the present invention, a multi-output transformer includes a primary bobbin provided with one primary winding unit with one input terminal and one ground terminal; a secondary bobbin provided with n(n: positive integer) number of secondary winding units with two output terminals respectively; a primary coil wound around the one primary winding unit; secondary coils wound around each of the n secondary winding units; and a pair of cores inserted into insertion holes formed inside the primary bobbin and the secondary bobbin respectively to separate the primary bobbin and the secondary bobbin.

Abstract: Double transformer balun for maximum PA (Power Amplifier) power. A novel approach is presented herein by which conversion from a differential signal to single-ended signal may be achieved using a double transformer balun design. The secondary coils of the double transformer balun also operate as a choke for the PA supply voltage. The secondary coils can operate as an RF (Radio Frequency) trap or choke to keep any AC (Alternating Current) signal components and to pass any DC (Direct Current) components. By using a double transformer balun design, relatively thinner tracks may be employed thereby ensuring a high degree of electromagnetic coupling efficiency and high performance. Also, these relatively thinner tracks consume a relatively small amount of space on the die. The double transformer balun design also includes a matching Z (impedance) block that is operable to match the Z of an antenna or line that the PA is driving.

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

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

Abstract: A multi-primary and distributed transformer is provided for one or more sets of parallel-connected or series-connected power amplifiers. The transformer may include a plurality of primary windings, including a first primary winding, a second primary winding, a third primary winding, and a fourth primary winding, where each of the plurality of primary windings is not directly connected to any other of the plurality of primary windings, where each primary winding includes a respective positive port and a negative port for receiving respective differential signals, where each primary winding include a respective first number of turns; and a single secondary winding having a plurality of segments, including a first segment and a second segment, where each segment includes a second number of turns, the second number of turns greater than or equal to the respective first number of turns, where the single secondary winding includes at least one output port.

Abstract: A transformer, adapted for being configured in a wiring substrate, is provided. The transformer includes a first plane coil and a second plane coil. The first plane coil includes a plurality of first loops. The second plane coil includes a plurality of second loops. A first bundle constituted by at least two adjacent first loops and a second bundle constituted by at least two adjacent second loops are stridden one over another.

Abstract: A magnetic element includes a magnetic core assembly and multiple winding coils. The magnetic core assembly is used for proving a closed magnetic flux path and includes a first side plate, a second side plate, a first side pillar, a second side pillar and at least two middle pillars. The first and second side pillars are arranged between the first and second side plates and respectively disposed on bilateral edges of the first and second side plates. The at least two middle pillars are arranged between the first and second side pillars and includes a first middle pillar and a second middle pillar. The winding coils are wound around the at least two middle pillars.

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

Abstract: A secondary winding spool for an ignition coil has two segments, one residing within a spark plug well and the other having a larger diameter than the well and residing above the well, to maximize exploitation of coil space in an engine.

Abstract: A transformer apparatus and a transformer shielding method are provided for shielding external electronic noises and protecting against erosion. The transformer apparatus comprises a toroidal core, a primary winding, a secondary winding, a protection tape, a metal foil, and an UL tube. The primary winding and the secondary winding are wound around the toroidal core at opposite side to each other. The protection tape is wrapped around the primary winding and the secondary winding. The metal foil encloses the protection tape. The UL tube enfolds the metal foil. The transformer shielding method comprises wrapping a primary winding and a secondary winding of the transformer apparatus by a protection tape, enclosing the protection tape by a metal foil, and enfolding the metal foil by an UL tube.

Abstract: A switching power supply device includes a first series circuit of first and second switching elements connected in parallel with a DC power supply. An isolation transformer has primary and secondary windings and first and second auxiliary windings, a first layer including the primary windings between a second layer of the two auxiliary windings, and a third layer of the secondary windings. A capacitor in series with the primary windings defines a second series circuit in parallel with the second switching element. A rectifying and smoothing circuit includes a rectifying diode and a smoothing capacitor, connected to the secondary windings. First and second control circuits turn on and off the first and second switching elements based on voltages generated in the two auxiliary windings, to obtain a DC output from the rectifying and smoothing circuit, enabling an adequate auxiliary windings voltage and stable switching operation including stable zero-voltage turn-on.

Abstract: There is provided a transformer improved in leakage inductance including: a core having first, second and third legs electromagnetically coupled to one another; a primary winding formed of a conductor having one end and another end receiving power from the outside and dividedly wound around the first, second and third legs; and a secondary winding wound around at least one of the first, second and third legs and receiving induced power by electromagnetic induction with the primary winding.

Abstract: A transformer having high and low voltage coils mounted to legs of a core is provided. Each low voltage coil includes conductor sheeting having opposing first and second ends and opposing first and second side edges. A pair of coil bus bars is provided for each low voltage coil. Each coil bus bar has first and second portions, wherein the first portion has a width that is more than one and a half times greater than a width of the second portion. Each coil bus bar is secured to the conductor sheeting of its low voltage coil such that the first portion of the coil bus bar is disposed at the first side edge of the conductor sheeting and the second portion of the coil bus bar is disposed at the second side edge of the conductor sheeting.

Abstract: The present invention relates to a transformer assembly (1) and a process for manufacturing same. The transformer (1) comprises a primary winding (5) wound on a PCB (9) and a secondary winding (7) mounted adjacent to the primary winding. The primary winding comprises a spiral coil, for example of wire or insulated wire, wound on the PCB. Gate drive windings (31, 33) are incorporated in the PCB (9) and there is therefore very close coupling between the primary winding and the gate drive windings. Furthermore, the secondary winding (7) is a centre-tapped secondary having two halves. A flux balance winding (13) is provided to connect the two halves of the centre-tapped secondary winding (7) and minimise leakage inductance thereby reducing power loss and spiking effects and obviating the need for complex control arrangements.

Abstract: A method for winding a coil for a transformer comprising providing a cylindrical inner tube of insulating material including a radially outwardly projected first end wall section disposed at a first end of the cylindrical inner tube and a radially outwardly projecting second wall section disposed at a second end of the cylindrical inner tube; winding a first insulating layer onto the cylindrical inner tube so as to extend to the first end wall section and the second end wall section; and winding a first winding wire layer onto the first insulating layer so as to provide a first distance between a first end of the first winding wire layer and the first wall section and a second distance between a second end of the first winding layer and the second end wall section.

Abstract: In inductive devices and transformers, a periodic transformation system reduces or prevents heat or distortion, reduces resistance or impedance and improves output energy. In one embodiment, the Tru-Scale Reactance Transformation System provides an harmonic relationship among the core, winding, magnetic flux, and the current in order to maximize energy output of inductive devices, such as a transformer, by reducing EMF collisions in any type of power systems.

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

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

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

Abstract: An inductive component includes a coil former comprising connection pins, a first winding and a second winding on the coil former, and protective components comprising either a PTC element or a polyswitch. The protective components are connected directly to the coil former; and the protective components and the windings are electrically connected to the connection pins.

Abstract: A distribution transformer adapted for mounting to a utility pole. The distribution transformer includes a plurality of coil assemblies mounted to a ferromagnetic core. Each of the coil assemblies includes a low voltage coil and a high voltage coil. The low voltage coils are connected together and the high voltage coils are connected together. An encasement comprised of an insulating resin encapsulates the core and the coil assemblies. The encasement includes a substantially annular body and a pair of high voltage bushings extending outwardly from the body. Terminals extend from the high voltage bushings and are connected to the high voltage coils.

Abstract: Disclosed is a wireless charging device for charging electronic devices placed in a docking area of the wireless charging device. The wireless charging device includes an inductive coupler, a reflected power detector, a power source and a power control system. The inductive coupler is configured to charge at least one electronic device present in the docking area. The inductive coupler takes power form the power source. The inductive coupler is also configured to communicate with the electronic device to exchange a set of information. The reflected power detector is operably coupled to the inductive coupler and identifies the set of information exchanged by the inductive coupler. The power control system is operably coupled to the reflected power detector and the power source. The power control system controls the charging of the electronic device by the power source based on the set of information identified by the reflected power detector.

Abstract: There is disclosed a voltage summer including a transformer having a primary side and a secondary side, wherein a first voltage to be summed is connected to the primary side and a second voltage to be summed is connected to the secondary side. There is further disclosed a transformer comprising a primary winding and a secondary winding and having a turns ratio of primary winding to secondary winding of x:y, providing x turns in series in the primary winding and providing y turns in series in the secondary winding; providing an equal number of turns in the primary and secondary windings; and closely coupling each primary winding turn with a secondary winding turn.

Abstract: A magnetic element includes a first wire, a second wire, a third wire, a fourth wire and a first single-strand wire. The first wire is disposed at a first side of the magnetic element, and has a first end and a second end. The second wire is disposed at the first side of the magnetic element, and has a third end and a fourth end. The third wire is disposed at a second side of the magnetic element, and has a fifth end and a sixth end. The fourth wire is disposed at the second side of the magnetic element, and has a seventh end an eighth end. The first single-strand wire has one terminal simultaneously connected to the second end and the fourth end.

Abstract: Combined type transformer includes: a transformer core; first and second coils provided with respect to the transformer core; first and second inductor cores provided around the first coil; and third and fourth inductor cores provided around the second coil. The transformer core and the first and second coils constitute a transformer, the first coil and the first and second inductor cores constitute a first inductor, and the second coil and the third and fourth inductor cores constitute a second inductor.

Abstract: An electrosurgical system is disclosed. The electrosurgical system includes a multiple-secondary transformer configured for sensing voltage. The multiple-secondary transformer includes a primary winding coupled to an active terminal and a return terminal of the electrosurgical system and a plurality of secondary windings. Each of the secondary windings is configured to transform the radio frequency voltage into a sensed voltage. Each of the secondary windings includes an output coupled to a sensor circuit and configured to transmit the sensed voltage to the sensor circuit.

Abstract: A reactor part includes at least a winding and a magnetic substance core, in which the core includes a pair of winding portions around each the winding is wound, and a non-winding portion around which no winding is wound, wherein a cross-sectional area in a direction orthogonal to a magnetic path of the non-winding portion of the core is made smaller than a cross-sectional area in a direction orthogonal to a magnetic path of the each of winding portions.

Abstract: A transformer includes a bobbin, a primary winding coil, a secondary winding coil, a case and a magnetic core assembly. The bobbin includes a winding member, a first channel, and multiple ground pins. The ground pins have first terminal parts protruded from a surface of the winding member. The primary winding coil and the secondary winding coil wound around the winding member. The case includes a receiving portion for partially accommodating the winding member therein, a second channel communicated with the receiving portion, and multiple perforations corresponding to the ground pins. The first terminal parts are penetrated through the perforations and protruded from a surface of the case when the winding member is accommodated in the receiving portion. The magnetic core assembly is partially embedded into the first channel and the second channel, so that the magnetic core assembly is contacted with the first terminal parts of the ground pins.

Abstract: The invention is directed to a transformer and a method of manufacturing the same. The transformer has high and low voltage coils mounted to legs of a core. Each low voltage coil includes conductor sheeting having opposing first and second ends and opposing first and second side edges. A pair of coil bus bars is provided for each low voltage coil. Each coil bus bar has first and second portions, wherein the first portion has a width that is more than one and a half times greater than a width of the second portion. Each coil bus bar is secured to the conductor sheeting of its low voltage coil such that the first portion of the coil bus bar is disposed at the first side edge of the conductor sheeting and the second portion of the coil bus bar is disposed at the second side edge of the conductor sheeting.