Abstract: A pulse transformer includes a core unit and a coil unit. The core unit includes an annular core part, and an annular choke part that is disposed in contact with the annular core part. The coil unit includes a plurality of coils, each of which is wound around both of the annular core part and the annular choke part.

Abstract: The invention provides a system for monitoring an operational parameter of a gas turbine, including a magnetic coupling between a signal source and a data output terminal. The magnetic coupling comprises a primary coil electrically connected to the signal source and wound around a first magnetic core section, and a secondary coil electrically connected to the output terminal but electrically isolated from the primary coil and wound around a second magnetic core section, wherein the first and second magnetic core sections are physically separated from one another.

Abstract: A transformer is disclosed. The transformer includes a first pin, a second pin, a first side winding, a second side winding, and a jump pin. The second side winding is coupled to the first pin and the second pin. The first pin is between the jump pin and the second pin. The jump pin is coupled to the second pin inside the transformer.

Abstract: In a transformer including a coil part having a first bobbin to which a coil is mounted, a second bobbin to be fitted to the first bobbin combined to each other, the coil part being sandwiched between magnetic cores from above and below, the first bobbin includes at least one lead drawing through holes on a periphery on the inner peripheral side of a coil mounting surface, and at least one of coil-drawn-leads of the coil is drawn through the lead drawing through hole. With this transformer, coming out of the coil-drawn-lead, displacement, and erroneous wiring are prevented, and hence the inserting capability of the coil is improved. Therefore, the workability is remarkably improved, and hence a product which is low in price can be provided.

Abstract: A transformer with adjustable leakage inductance includes a first bobbin, a first winding, and a second winding. The first bobbin includes a first region and a second region. The second winding includes a first coil portion and a second coil portion. One of the first winding and the first coil portion of the second winding is wound around the first region of the first bobbin, and the other of the first winding and the first coil portion of the second winding is wound outside of the one wound around the first region of the first bobbin. The second coil portion of the second winding is wound around the second region of the first bobbin.

Abstract: An inductor design having a detection winding which is magnetically coupled to the existing winding and its induction voltage is used to cancel that of the existing winding. Having the induction voltage cancelled, the voltage across the existing winding represents a resistive voltage drop of the existing winding current. The detection winding is furthermore built with a non-inductive portion having a significantly higher DC resistance in proportion to that of the existing winding. This resistance proportion is insensitive against temperature variations when both the existing and the detection windings are built with the same material and subjected to the same environment. A reference current is fed through the detection winding to produce a reference resistive voltage drop which is used to cancel the resistive voltage drop across the existing winding. When a precise cancellation occurs, the existing winding current is known to be in exact proportion to the reference current.

Abstract: The present invention relates to a connector system that provides the transfer of electrical power and/or data communications signals between two systems. The connector has no conductive electrical connection and can operate independently of angular orientation.

Abstract: In order to additionally furnish the transformer with the reactor capability easily without having to change the structure of the transformer, a transformer is formed by winding an input-side coil 1b and output-side coils 1a and 1c around a shell-type iron core 2 so that voltages are induced in the output-side coils 1a and 1c by magnetic fluxes generated by a voltage applied on the input-side coil 1b, and two reactor coils 3a and 3b having the same winding number in the opposite winding directions and making a pair are wound around the shell-type iron core 2. A shared reactor transformer as a whole is thus formed.

Abstract: A bobbin includes a first winding frame to wrap primary winding coils thereon, a first winding chassis defining a first opening to receiving the first winding frame therein, a pair of second winding chassis positioned at two opposite ends of the bobbin and each defining a second opening, a pair of second winding frames received in the second openings of the second winding chassis to wrap secondary winding coils thereon, and a receiving hole extending through the second winding chassis and the first winding frame. The first winding frame is positioned between the second winding chassis. Each of the second winding frames defines a through hole communicating with the receiving hole. The first opening of the first winding chassis faces to a first direction, and each of the second openings of the second winding chassis faces to a second direction different from the first direction.

Abstract: A magnetic element includes a pair of coil sets. Each of the coil sets includes a first coil having a plurality of first metallic lines, a second coil having a plurality of second metallic lines, and at least one conductive column electrically connected between the first coil and the second coil. The magnetic element further includes a package body for enclosing the pair of coil sets therein.

Abstract: An ignition transformer for a discharge lamp is provided having a transformer core whose material and dimensions are selected in such a manner that the Curie temperature of the material after the ignition which is achieved by means of the ignition transformer can be achieved by a voltage drop across a secondary winding of the ignition transformer.

Abstract: A transformer includes a core having a first leg, a second leg and a third leg, a split primary winding including first turns about the first leg electrically coupled with second turns about the third leg, and a secondary winding about the second leg. Magnetic flux linking the first turns of the split primary winding and magnetic flux linking the second turns of the primary winding link the secondary winding.

Abstract: A high voltage transformer employed in an inverter includes a first core and a second core. The second core is coupled to the first core. One end of the second core is wrapped by a primary winding, and the other end thereof is wrapped by a secondary winding. A conductive coefficient of the first core is at least 100 times of that of the second core.

Abstract: A double-tuned circuit includes a primary side tuned circuit having a first air-cored coil and a secondary side tuned circuit having a second air-cored coil. The first air-cored coil and the second air-cored coil are opposed to each other so that one opening end of the first air-cored coil and one opening end of the second air-cored coil are capable of being coupled to each other on a coil mounting surface. The coil mounting surface is provided with a first conductive pattern formed adjacent to the first air-cored coil in a direction perpendicular to an arrangement direction of the first and second air-cored coils, and both ends of first conductive pattern are connected to a ground.

Abstract: The invention discloses a transformer for a backlight apparatus including a lamp and a detecting unit. The transformer includes a bobbin, a first winding and a second winding. The bobbin has a low-voltage winding region and a high-voltage winding region. The first winding is wound on the high-voltage winding region and is coupled to the lamp. The low-voltage winding region has a first pin, a second pin and a third pin. Firstly, the second winding is wound on the first pin and then wound on the low-voltage winding region for M turns. Next, the second winding is drawn out from the low-voltage winding region, then wound on the second pin, and then drawn back to be wound on the low-voltage winding region for N turns again. Afterwards, the second winding is drawn out again and wound on the third pin, where each of M and N is a nature number. In addition, the third pin is coupled to the detecting unit.

Abstract: A transformer, particularly a seat transformer, for a sitting device, comprising at least one transformation unit, which has at least one input and at least one output. According to the invention, the transformation unit is provided for transforming a low voltage present at the input.

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: A transformer includes: —a plurality of windings (P, S1, S2) wound on a coil former (100), preferably in the form of a one-piece coil former, —a pair of first insulating flanges (106) separating a first winding (P) from a pair of second windings (S1, S2), —a pair of second insulating flanges (104) defining together with the first insulating flanges (106) two winding spaces for the second windings (S1, S2). The ends (P1, P2) of the wire of the first winding (P) extend across the winding spaces for the second windings (S1, S2). Insulating walls (208) are provided extending between the ends (P1, P2) of the wire of the first winding (P) and the second windings (S1, S2) to provide insulation therebetween.

Abstract: A magnetic induction device (MID) is described. The MID comprises at least one primary electrical winding, at least one secondary electrical winding, and an electrically-conductive cover (BCC) which is electrically connected to a local ground and at least partially surrounds, without forming a closed conductive loop, a core via which the at least one primary electrical winding and the at least one secondary electrical winding are magnetically coupled. Related apparatus and methods are also described.

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: An inductor device is provided. The inductor includes: a first inductor; a second inductor, wherein the first inductor and the second inductor are arranged such that a magnetic field generated by the first inductor and passing through the inside of a loop formed from the second inductor comprises a first magnetic field and a second magnetic field, the first magnetic field passing from the topside of the loop to the downside of the loop, the second magnetic field passing from the downside of the loop to the topside of the loop.

Abstract: A high-precision Rogowski current transformer, the Rogowski coil is realized in a single printed circuit board while maintaining both the outside field rejection of a traditional Rogowski coil, and the increased output voltage similar to the multiple printed circuit board Rogowski coil arrangements.

Abstract: A first current is supplied to a first primary winding of an ignition coil and a second current is supplied to a second primary winding of the ignition coil. A voltage is generated across a secondary winding of the ignition coil and an ignition spark current is generated at a spark plug coupled to the secondary winding. The ignition spark current is based upon the generated voltage and the sum of the first current and the second current.

Abstract: A signal isolating transformer may be arranged such that a first coil of the signal isolating transformer is located in a medium voltage compartment and a second coil of the signal isolating transformer is located external to the medium voltage compartment. The transformer spans an opening defined by a grounded wall to isolate faults in the medium voltage compartment.

Abstract: The invention provides a balance transformer and a backlight apparatus using the same. The balance transformer comprises a first main coil, a second main coil, a first induction coil, and a conductor. The first main coil has a first contact point and a second contact point, and the second main coil has a third contact point and a fourth contact point. The first induction coil is corresponding to the first main coil and the second main coil. The conductor is then series connected to the first contact point and the fourth contact point. Accordingly, the balance transformer drives the backlight apparatus to light and balances the currents of a plurality of light units of the backlight apparatus.

Abstract: A reduced cost energy transfer element for power converter circuits. In one embodiment, an energy transfer element according to an embodiment of the present invention includes a magnetic element having an external surface with at least a first winding and a second winding wound around the external surface of the magnetic element without a bobbin. As such, energy to be received from a power converter circuit input is to be transferred from the first winding to the second winding through a magnetic coupling provided by the magnetic element to a power converter circuit output.

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

Abstract: Disclosed is an apparatus for generating secondary electricity from an electromagnetic field around a wire. The apparatus includes a coil unit, a wire and a rectifier. The coil unit comprising a highly magnetically conductive ring and a coil provided wound around the highly magnetically conductive ring. The wire is wound around the highly magnetically conductive ring. The rectifier is connected to the coil.

Abstract: A complex inductor according to the present invention changes its magnetic coupling polarity according to currents flowing its two inductors. The complex inductor includes a first magnetic member, around which first and third windings are formed, and a second magnetic member, around which second and fourth windings are formed. A first inductor is formed by connecting the first winding to the second winding, and a second inductor is formed by connecting the third winding to the fourth winding. The two magnetic members are made of a magnetic material having a magnetic permeability that gradually decreases as its magnetic flux density is increased. When the two windings are interconnected in a direction in which induced voltages generated in these windings by the current flowing in the second inductor weaken each other, the magnetic coupling polarity between the first and second inductors changes according to the current flowing in the inductors.

Abstract: A multi-loop RF coil includes a plurality of channels and is formed of a plurality of coil elements. The coil includes a pair of coil elements that at least partially overlap with one another as part of a geometric decoupling scheme between the pair of coil elements.

Abstract: A switched mode power supply transformer for use in a modular switched mode power supply, the transformer comprising a primary winding, a magnetic core and at least one configurable secondary winding so as to provide a switched mode power supply transformer that is small in size, low in weight, is user configurable and has low power losses.

Abstract: A transformer is provided. The transformer includes at least a high voltage coil, at least a low voltage coil and a soft-magnetic colloid element. The soft-magnetic colloid element is disposed between the high voltage coil and the low voltage coil.

Abstract: An inductor with self-damping properties for use in multiple applications including for high power broadband frequency applications is provided by a coil having an input end and an output end and wound about a core of magnetically permeable material and an eddy current generator incorporated either at the time of manufacture or post manufacturing. The core can be air (e.g., a hollow coil of wire). Alternative core materials are iron, iron powder, steel laminations and other appropriate materials. The core may be incorporated into some form of frame whether I shaped, U shaped, E shaped or of an encapsulated shape arrangement. The inductor's Q value may be changed selectively by deliberately inducing eddy currents in preferred locations. The eddy currents are induced into the inductors and have the effect of introducing a back EMF which is designed and scaled appropriately to adjust the Q value at the desired frequency resulting is less phase distortion.

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.

Abstract: An integrated circuit (IC) system provides a broadband impedance matching function in a minimal IC area for operation with an external high-speed differential communications channel. The IC system includes a first semi-conductive substrate with a first face and an oppositely disposed second face substantially parallel to the first face. A second non-conductive substrate having substantially parallel first and second faces is arranged upon the first substrate so that the first face of the first substrate contacts the second face of the second substrate. An integrated semiconductor circuit (IC) is disposed in the first substrate and intended for differential high-speed communications operation with the external high-speed differential communications channel. First and second planar conductors are disposed in the second substrate to be electrically isolated from each other and from the first substrate, and arranged for maximum mutual magnetic additive coupling between them.

Abstract: A contactless power transferring coil unit is provided. The contactless power transferring coil unit includes a flat coil, a magnetic film, and a leaking flux detecting coil. The flat coil is formed by winding a conductive wire into a spiral on a substantially flat plane. The magnetic film is disposed so as to cover one entire flat surface of the flat coil. The leaking flux detecting coil is disposed in a periphery outside an outer edge of the flat coil and the magnetic film and detects leaking magnetic flux from the flat coil.

Abstract: A transformer-type compact and thin coil device having a high coupling degree between a primary coil and a secondary coil, and a transformer device in which a plurality of sets of the transformer-type coil devices are incorporated. A coil device includes a first winding portion in which a primary and secondary coil wires are wound in bifilar form so as to arrange them alternately in a plane, a second winding portion in which a secondary coil wire is wound to arrange it in a plane parallel to the plane of the first winding portion, and a secondary coil connecting portion which connects an inner diameter portions of the secondary coil wires of the first and second winding portions. A transformer device is formed by incorporating a plurality of sets of the transformer-type coil devices each formed in above manner.

Abstract: A variable integrated inductor is described herein which has an inductance value that can be switched between two or more values. In the preferred embodiment, the variable integrated inductor includes a multi-loop primary inductor which is electromagnetically coupled to a pair of secondary inductors. The secondary inductors are connected to one another to form a closed circuit within which the secondary inductors have a changeable topology that can be switched between a series connection and a parallel connection in order to change an inductance value which is output by the multi-loop primary inductor. In one application, the variable integrated inductor is used in a voltage controlled oscillator (VCO) which is of the type that can be used in a multi-band RF radio transceiver (e.g., wireless communication device).

Abstract: Disclosed is a lamp transformer assembly, transformer winding arrangement and method of assembling a transformer assembly and lamp igniter transformer core. The lamp transformer assembly comprises a transformer core comprising two or more core members, wherein the core members ends are adapted to provide a transformer core with axially distributed air gaps. Furthermore, the transformer assembly comprises a primary and secondary winding, wherein one or more core members and the secondary winding are adapted to provide insertion of the one or more core members within the interior of the secondary winding. The transformer core members are attached to complete the core.

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: A noise filter includes a magnetic conduction housing and a pair of coils. The magnetic conduction housing has a main body and a magnetic conduction position. The main body is hollow. The magnetic conduction position is connected with the main body to divide the main body into two parts. The coils are wound around the main body. In addition, the manufacturing method of the noise filter is also provided.

Abstract: A current transformer core made of an alloy having a composition represented by the general formula: Fe100-x-a-y-cMxCuaM?yX?c (by atomic %), wherein M is Co and/or Ni, M? is at least one element selected from the group consisting of V, Ti, Zr, Nb, Mo, Hf, Ta and W, X? is Si and/or B, and x, a, y and c are numbers satisfying 10?x?50, 0.1?a?3, 1?y?10, 2?c?30, and 7?y+c?31, respectively; at least part or all of the alloy structure being composed of crystal grains having an average particle size of 50 nm or less.

Abstract: A variable transformer has an effective turns ratio that can be varied by electronic switching. By varying the effective turns ratio, the output voltage can be controlled precisely for a varying input voltage and load regulation. The variable transformer is a modular transformer in which one or more of the modules can be effectively removed from the variable transformer by turning on an ac switch so as to short-circuit the secondary winding of the module. When the ac switch is on, the rectifiers of the module must be turned off, if they are synchronous rectifiers. If they are diodes, they will be off by being back-biased when the ac switch is on. Improved transformer modules are shown having reduced leakage inductance.

Abstract: An inductor with self-damping properties for use in multiple applications including for high power broadband frequency applications is provided by a coil having an input end and an output end and wound about a core of magnetically permeable material and an eddy current generator incorporated either at the time of manufacture or post manufacturing. The core can be air (e.g., a hollow coil of wire). Alternative core materials are iron, iron powder, steel laminations and other appropriate materials. The core may be incorporated into some form of frame whether I shaped, U shaped, E shaped or of an encapsulated shape arrangement. The inductor's Q value may be changed selectively by deliberately inducing eddy currents in preferred locations. The eddy currents are induced into the inductors and have the effect of introducing a back EMF which is designed and scaled appropriately to adjust the Q value at the desired frequency resulting is less phase distortion.

Abstract: A PFC circuit comprises a first converter and a second converter and a multi-port electromagnetic device. The first converter has a first inductive element and the second converter has a second inductive element. The multi-port electromagnetic device comprises a first magnetic core having a first closed flux path and a second magnetic core having a second closed flux path, with the first closed flux path being independent of the second closed flux path. The first inductive element of the first boost circuit comprises a first winding that electromagnetically couples the first magnetic core to the second magnetic core and the second inductive element of the second boost circuit comprises a second winding that electromagnetically couples the first magnetic core to the second magnetic core independent of the electromagnetic coupling of the first winding such that current application in one windings does not induce a substantial voltage in the other.

Abstract: A controllable inductor, comprising first and second coaxial and concentric pipe elements, where said elements are connected to one another at both ends by means of magnetic end couplers, a first winding wound around both said elements, and a second winding wound around at least one of said elements, where the winding axis for the first element is perpendicular to the elements' axes and the winding axis of the second winding coincides with the elements' axes, characterized in that said first and second magnetic elements are made from anisotropic magnetic material such that the magnetic permeability in the direction of a magnetic field introduced by the first of said windings is significantly higher than the magnetic permeability in the direction of a magnetic field introduced by the second of said windings.

Abstract: A high density multi-layer microcoil includes a substrate, a multi-layer coil winding, a magnetic core and a dry film photoresist structure. The multi-layer coil winding and the magnetic core are supported by the dry film photoresist structure. The fabrication process is using photolithography process to form a dry film photoresist structure with a coil tunnel having coil elements perpendicular to the substrate and two outlets at ends of the tunnel; and injecting a conductive material with a low melting point into the tunnel and forming the coil winding.

Abstract: A multi-port electromagnetic device comprises a first magnetic core having a first closed flux path and a second magnetic core having a second closed flux path, with the first closed flux path being independent from the second closed flux path. At least one first winding electromagnetically couples the first magnetic core to the second magnetic core, and at least one second winding electromagnetically couples the first magnetic core to the second magnetic core independent of the electromagnetic coupling of the at least one first winding such that current application in one of the first or second windings does not induce a magnetic flux in the other one of the first or second windings.

Abstract: A controllable transformer device comprising a body of a magnetic material, a primary winding wound round the body about a first axis, a secondary winding wound round the body about a second axis at right angles to the first axis, and a control winding wound round the body about a third axis, coincident with the second axis. The device can be employed to provide a frequency controlled power supply.

Abstract: An amorphous metal core transformer is provided with a plurality of wound magnetic cores composed of amorphous metal strips, and a plurality of coils, each of the coils including a primary coil and a secondary coil, each of the coils further including a bobbin. The primary coil employs different material from that of the secondary coil, e.g., a copper conductor is employed in a primary coil, while an aluminum conductor is employed in a secondary coil. The bobbin has higher strength than that of the amorphous metal strips.