Abstract: An auxiliary core portion and a main core portion, including a magnet if the magnet is attached, are covered by a resin film or an elastomer film and fixed as a single assembly. In this state, a coil is attached to the assembly and a side core portion is assembled to the assembly. The auxiliary core portion and the main core portion, including the magnet if it is attached, can be supplied, as the single assembly, to an automated assembly line for ignition coils. It is not necessary to position such components on the assembly line. Thus, the workability of the automated assembly can be enhanced.

Abstract: A method of forming an encapsulated coupled coil arrangement. The method includes coupling a first lead of a first coil to a second lead of an electrical circuit device, by soldering or infusion, using a superconductive jointing alloy; and encapsulating the first coil, the electrical circuit device and the jointed leads of the first coil and the electrical circuit device in an encapsulation material. The jointing alloy has a melting point higher than a highest temperature experienced by the encapsulation material having the encapsulation process.

Abstract: A multilayer inductor includes a bottom magnetic layer having an external conductive pattern formed on a bottom surface thereof for connection to a substrate such as a printed circuit board. The bottom external conductive pattern includes signal/power contacts and first and second inductor electrodes. A top magnetic layer includes a top external conductive pattern having signal/power contacts and inductor electrode contacts. An inductor conductive pattern formed on the top surfaces of intermediate magnetic layers disposed between the top and bottom magnetic layers are electrically coupled to each other by means of through holes to form a spiral inductor element.

Abstract: An inverter and an electronic apparatus using the inverter are disclosed. The electronic apparatus has a circuit board and an inverter. The circuit board has an opening. The inverter has a wiring frame arranged in the opening. The wiring frame has a wiring portion for wiring coils. The wiring portion has two carrying portions at opposite sides, respectively. Each of the carrying portions has a side portion. A space for accommodating magnet is formed by the wiring portion and the carrying portion and the side portion. A conductive contact is arranged at one side of the side portion and a protrusion is arranged at another side of the side portion. The protrusion is used for being against the surface of the circuit board, and the height of the inverter with respect to the circuit board can thus be adjusted by the protrusion.

Abstract: This invention is directed to a device for energy storage and transformation that allows an increased level of energy storable in an ignition coil, using a coil that has a permanent magnet inside of a primary magnetic core, with a second magnetic core that closes the magnetic path of the primary magnetic core.

Abstract: A method of fabricating a reactor composed of a coil, a core, and a container, capable of suppressing the core to break when a current flows in the coil to generate magnetic flux. In the method, the coil is formed by spirally winding a conductive wire. The coil is immersed in an insulating film in liquid with electrical insulation. The coil is placed in a furnace. Annealing for the coil and thermosetting for the insulating film are performed at a temperature within 250 to 320° C. for a period of time within 30 minutes to one hour before forming the core in the container. The coil is then disposed in the container. Inside and outside areas of the coil in the container is filled with a resin mixture composed of magnetic powder and resin. The resin mixture in the container is hardened to form the core.

Abstract: A method of A production method including interdiffusion of a Ni component in a magnetic layer and a Zn component in a nonmagnetic sheet to form an interdiffusion layer in a region of the nonmagnetic sheet inside a conductive pattern. This method allows the interdiffusion layer to be formed without need for complicated processing of the nonmagnetic sheet. Furthermore, there is no boundary region between the magnetic layer and the nonmagnetic sheet around it. The nonmagnetic layer is located between turns of a coiled conductor to suppress degradation of dc bias characteristics and a magnetic body penetrates in a region inside the coiled conductor to suppress reduction in inductance due to provision of the nonmagnetic layer between turns of the coiled conductor.

Abstract: A damascene process is utilized to fabricate the segmented magnetic core elements of an integrated circuit inductor structure. The magnetic core is electroplated from a seed layer that is conformal with a permanent dielectric mold that results in sidewall plating defining an easy magnetic axis. The hard axis runs parallel to the longitudinal axis of the core and the inductor coils are orthogonal to the core's longitudinal axis. The magnetic field generated by the inductor coils is, therefore, parallel and self-aligned to the hard magnetic axis. The easy axis is enhanced by electroplating in an applied magnetic field parallel to the easy axis.

Abstract: An underwater power connection system (10) has at least two separable magnetic cores (40, 50) which are operable when coupled together to form a magnetic circuit, where the at least two cores (40, 50) are provided with respective one or more windings, and said cores (40, 50) include a transverse magnetic member arrangement (60, 80) supporting magnetic limbs (70, 90), where the limbs (70, 90) are elongate and are adapted to intermesh with their lateral sides mutually abutting for providing the magnetic circuit when the system (10) is in its assembled state (210), and where the limbs (70,90) are of tapered form towards their distal ends.

Abstract: A method of forming an encapsulated coupled coil arrangement. The method includes coupling a first lead of a first coil to a second lead of an electrical circuit device, by soldering or infusion, using a superconductive jointing alloy; and encapsulating the first coil, the electrical circuit device and the jointed leads of the first coil and the electrical circuit device in an encapsulation material. The jointing alloy has a melting point higher than a highest temperature experienced by the encapsulation material during the encapsulation process.

Abstract: Methods of manufacture of integrated circuit inductors having slotted magnetic material will be described. The methods may employ electro- or electroless plating techniques to form a layer or layers of magnetic material within the slotted magnetic material structure, and in particular those magnetic material layers adjacent to insulator layers.

Abstract: A current source and method of producing the current source are provided. The current source includes a metal source, a buffer layer, a filter and a collector. An electrical connection is provided to the metal layer and semiconductor layer and a magnetic field applier may be also provided. The source metal has localized states at a bottom of the conduction band and probability amplification. The interaction of the various layers produces a spontaneous current. The movement of charge across the current source produces a voltage, which rises until a balancing reverse current appears. If a load is connected to the current source, current flows through the load and power is dissipated. The energy for this comes from the thermal energy in the current source, and the device gets cooler.

Abstract: A biased gap inductor includes a first ferromagnetic plate, a second ferromagnetic plate, a conductor sandwiched between the first ferromagnetic plate and the second ferromagnetic plate, and an adhesive between the first ferromagnetic plate and the second ferromagnetic plate, the adhesive comprising magnet powder to thereby form at least one magnetic gap. A method of forming an inductor includes providing a first ferromagnetic plate and a second ferromagnetic plate and a conductor, placing the conductor between the first ferromagnetic plate and the second ferromagnetic plate, adhering the first ferromagnetic plate to the second ferromagnetic plate with a composition comprising an adhesive and a magnet powder to form magnetic gaps, and magnetizing the inductor.

Abstract: This invention discloses a monolithic inductor including a body made by compressing a magnetic powder, a coil positioned in the body, and a permanent magnet positioned in the body and in a magnetic circuit formed by applying current to the coil. The monolithic inductor of this invention includes the magnetic body containing the permanent magnet and the coil. The permanent magnet in the magnetic circuit (path of magnetic flux lines) formed by applying current to the coil generates a reverse-bias magnetic field, thereby increasing the operating range of the magnetic body, the saturation current of the magnetic body, and the rated current of the inductor.

Abstract: A DC inductor comprising a core structure (11) comprising one or more magnetic gaps (12), a coil (14) inserted on the core structure (11), at least one permanent magnet (15) positioned in the core structure, the magnetization of the permanent magnet (15) opposing the magnetization producible by the coil (14). The core structure is adapted to form a main flux path and an auxiliary flux path, where the main flux path is adapted to carry the main magnetic flux producible by the coil, wherein the auxiliary flux path comprises a magnetic gap and is adapted to lead magnetic flux past the at least one permanent magnet (15).

Abstract: A biased gap inductor includes a first ferromagnetic plate, a second ferromagnetic plate, a conductor sandwiched between the first ferromagnetic plate and the second ferromagnetic plate, and an adhesive between the first ferromagnetic plate and the second ferromagnetic plate, the adhesive comprising magnet powder to thereby form at least one magnetic gap. A method of forming an inductor includes providing a first ferromagnetic plate and a second ferromagnetic plate and a conductor, placing the conductor between the first ferromagnetic plate and the second ferromagnetic plate, adhering the first ferromagnetic plate to the second ferromagnetic plate with a composition comprising an adhesive and a magnet powder to form magnetic gaps, and magnetizing the inductor.

Abstract: The radio frequency (RF) inductor includes a core being electrically non-conductive and ferrimagnetic, and having a toroidal shape, and a wire coil thereupon. At least one permanent magnet body is at a fixed position within the interior of the core, and an electrically conductive RF shielding layer is on the at least one permanent magnet body. The core may be ferrite for example. The electrically conductive RF shielding layer may be a conductive plating layer or a metal foil surrounding the permanent magnet body, for example. A magnetic field from the permanent magnet is applied to the inductor core to reduce losses, and the permanent magnet may be enclosed within the conductive shield to keep RF fields out. The inductor may be made small and have increased Q and resulting efficiency. The RF inductor may be applicable to RF communication circuits, for example, as an antenna coupler.

Abstract: A DC inductor comprising a core structure (11) comprising one or more magnetic gaps (12, 13), a coil (14) wound on the core structure (11), at least one permanent magnet (15) positioned in the core structure, the magnetization of the permanent magnet (15) opposing the magnetization producible by the coil (14). The DC inductor further comprises at least one magnetic slab (16) inserted to the core structure which forms the one or more magnetic gaps (12, 13), at least one supporting member (17) made of magnetic material extending from the core structure inside the core structure and supporting the at least one permanent magnet (15), and that the at least one supporting member (17) is arranged to form a magnetic path for the at least one permanent magnet.

Abstract: A method of manufacturing a transformer is disclosed. A first bobbin piece, having a first channel and a primary winding section is provided. A second bobbin comprising first and second secondary side plates, plural partition plates, a wall portion, a secondary base having a first pin arranged on a bottom surface of the secondary base, plural secondary winding sections, and a second channel is provided. A second pin is inserted into the second bobbin piece to form a wire-arranging part protruded from the second secondary side plate and an insertion part protruded from the bottom surface of the secondary base. A primary winding coil is wound on the primary winding section, and the first and second terminals of a secondary winding coil are respectively fixed on the first pin and the wire-arranging part. A magnetic core assembly is partially disposed within the first channel and the second channel.

Abstract: A method for making a power inductor comprises providing a first magnetic core comprising a ferrite bead core material, cutting a first cavity and a first air gap in said first magnetic core, and attaching a second magnetic core to said first magnetic core at least one of in and adjacent to said air gap.

Abstract: DC choke arrangement of a power transformer, especially of a frequency converter, provided with a DC circuit and connected to an AC electricity network, to limit the harmonics of the network current taken by an appliance from the AC network, in which DC choke arrangement is at least one choke (Ldc+, Ldc?), which is arranged in the magnetic core, which contains pillar parts and yoke parts (1a?, 1b?, 2a?, 2b?), in which one or more permanent magnets (51) are arranged in the magnetic core of the choke, and in which the permanent magnet is positioned at an angle with respect to the longitudinal direction of the part or parts of the magnetic core such that the cross-sectional area of the permanent magnet is greater than the cross-sectional area of the part of the magnetic core in question or the parts of the magnetic core in question.

Abstract: A planar transformer or balun device, having small trace spacing and high mutual coupling coefficient, and a method of fabricating the same is disclosed. The method may comprise providing a first and a second inductor on a primary and a second substrate respectively, interleaving at least partially the first inductor with the second inductor, coupling the primary and the secondary substrates to form a unitary structure, and providing electrical contacts to couple the first and second inductors with another device or circuit.

Abstract: The present invention provides a bond magnet for direct current reactor which is to be disposed in a gap formed in a magnetic core of a direct current rector, the bond magnet containing a magnet powder containing a rapidly quenched powder of a rare earth magnet alloy. The present invention also provides a direct current reactor including a magnetic core having a gap and a winding area wound around the magnetic core, in which the bond magnet is disposed in the gap of the magnetic core.

Abstract: An electromagnetic generator comprising two magnets and a coil disposed therebetween, the two magnets being configured to define therebetween a region of magnetic flux in which the coil is disposed whereby relative movement between the coil and the magnets generates an electrical current in the coil, and a vibratable first mount for each of the magnets and a vibratable second mount for the coil whereby each of the at least two magnets and the coil are respectively vibratable about a respective central position.

Abstract: A high-strength ignition coil that can prevent distortion arising from pin marks formed on a surface of a core and makes it less likely for insulating resin to be cracked. The coil assembly is housed in a coil case. A casting material is filled into a gap between the coil case and the coil assembly and gaps which the coil assembly has. The coil assembly is comprised of a coil pair including a cylindrical primary coil and a secondary coil disposed concentrically with the primary coil, and a core. The core is fitted into a central space of the coil pair and forms a magnetic path. The core is coated with mold resin. Concave portions of pin marks formed on a mold resin coating by removal of core fixing pins when the mold resin coating is formed are filled with mold resin.

Abstract: A permanent magnet DC inductor is disclosed which includes at least two separate and individual magnetic inductors, each having its own core structure and forming closed individual magnetic paths having at least one magnetic gap. Windings are provided on the magnetic cores, and at least one permanent magnet piece is provided with each inductor. The separate magnetic cores having the at least one magnetic gap are arranged against each other to form external magnetic gaps with the permanent magnet pieces arranged inside the external magnetic gaps on both sides of the at least one magnetic gap.

Abstract: An inductance device comprises a magnetic core, a coil a conductor and a dielectric member. The coil is made of turns of insulated conductive wire. The conductor is distinct from the coil and is insulated from the magnetic core. The dielectric member is disposed between the conductor and the coil. The dielectric member, the conductor and the coil constitute a capacitor. The inductance device is used in, for example, a filter device or a noise filter.

Abstract: A manufacturing method of an embedded inductor includes the steps of providing a magnetic plastic material, disposing at least one coil into a mold, and injecting or pressing the magnetic plastic material into the mold to form a magnetic body encapsulating the coil. An embedded inductor includes at least one magnetic body encapsulating the coil by injecting molding or pressing molding.

Abstract: A multilayer composite including a core made of a magnetic ceramic sintered compact disposed therein, and shrinkage restraining layers including an inorganic powder that is not substantially sintered at the sintering temperature of the green ceramic layers are sintered in order to reduce the difference in shrinkage behavior during firing between the core and the green ceramic layers.

Abstract: A reactor arrangement for alternating electrical current includes different coils (105, 107) for positive and negative half-cycles of the alternating electrical current. The negative and positive half-cycles of the alternating electrical current are directed to the different coils with the aid of unidirectional electrical components (106, 108) such as, for example, diodes. The both coils are arranged to magnetize a common magnetic core element (104) in a same direction. The reactor arrangement further includes at least one permanent magnet (109) that generates, into the magnetic core element, a biasing magnetic flux component having an opposite direction than that of magnetic flux components generated with the coils. Therefore, the biasing magnetic flux component generated with the permanent magnet relieves magnetic saturation of the magnetic core element. Hence, the size and the weight of the magnetic core element can be reduced.

Abstract: A damascene process is utilized to fabricate the segmented magnetic core elements of an integrated circuit inductor structure. The magnetic core is electroplated from a seed layer that is conformal with a permanent dielectric mold that results in sidewall plating defining an easy magnetic axis. The hard axis runs parallel to the longitudinal axis of the core and the inductor coils are orthogonal to the core's longitudinal axis. The magnetic field generated by the inductor coils is, therefore, parallel and self-aligned to the hard magnetic axis. The easy axis can be enhanced by electroplating in an applied magnetic field parallel to the easy axis.

Abstract: The present invention provides a bond magnet for direct current reactor which is to be disposed in a gap formed in a magnetic core of a direct current rector, the bond magnet containing a magnet powder containing a rapidly quenched powder of a rare earth magnet alloy. The present invention also provides a direct current reactor including a magnetic core having a gap and a winding area wound around the magnetic core, in which the bond magnet is disposed in the gap of the magnetic core.

Abstract: A method for manufacturing an inductor using a system-in-package (SIP) includes forming a first penetration electrode in a silicon substrate; depositing an insulating film on a first surface of the silicon substrate, and patterning the insulating film to form an inductor hole and a second penetration hole aligned with the first penetration hole; forming an inductor in the inductor hole and a second penetration electrode in the second penetration hole; and depositing a protective film on the insulating film and performing a back grind process such that the first penetration electrode is exposed from a second surface of the silicon substrate, the second surface being opposed to the first surface.

Abstract: An integrated circuit includes a substrate and an inductive device on a first side of the substrate. The integrated circuit includes a first ferromagnetic material on a second side of the substrate opposite the first side.

Abstract: DC choke arrangement of a power transformer, especially of a frequency converter, provided with a DC circuit and connected to an AC electricity network, to limit the harmonics of the network current taken by an appliance from the AC network, in which DC choke arrangement is at least one choke (Ldc+, Ldc?), which is arranged in the magnetic core, which contains pillar parts and yoke parts (1a?, 1b?, 2a?, 2b?), in which one or more permanent magnets (51) are arranged in the magnetic core of the choke, and in which the permanent magnet is positioned at an angle with respect to the longitudinal direction of the part or parts of the magnetic core such that the cross-sectional area of the permanent magnet is greater than the cross-sectional area of the part of the magnetic core in question or the parts of the magnetic core in question.

Abstract: A DC inductor comprising a core structure (11) comprising one or more magnetic gaps (12), a coil (14) inserted on the core structure (11), at least one permanent magnet (15) positioned in the core structure, the magnetization of the permanent magnet (15) opposing the magnetization producible by the coil (14). The core structure is adapted to form a main flux path and an auxiliary flux path, where the main flux path is adapted to carry the main magnetic flux producible by the coil, wherein the auxiliary flux path comprises a magnetic gap and is adapted to lead magnetic flux past the at least one permanent magnet (15).

Abstract: A DC inductor comprising a core structure (11) comprising one or more magnetic gaps (12, 13), a coil (14) wound on the core structure (11), at least one permanent magnet (15) positioned in the core structure, the magnetization of the permanent magnet (15) opposing the magnetization producible by the coil (14). The DC inductor further comprises at least one magnetic slab (16) inserted to the core structure which forms the one or more magnetic gaps (12, 13), at least one supporting member (17) made of magnetic material extending from the core structure inside the core structure and supporting the at least one permanent magnet (15), and that the at least one supporting member (17) is arranged to form a magnetic path for the at least one permanent magnet.

Abstract: A chip scale power converter package having an inductor substrate and a power integrated circuit flipped onto the inductor substrate is disclosed. The inductor substrate includes a high resistivity substrate having a planar spiral inductor formed thereon.

Abstract: The system 1 according to the invention comprises an energizable load 2 and an inductive powering device 9 and a permanent magnet 8 arranged on the conductor 4 for interacting with the further conductor 9a for aligning the inductor winding 6 with respect to the further inductor winding 9b. The energizable load 2 for enabling the inductive power receipt comprises a wiring 6 which cooperates with the conductor 4 for forming a secondary wiring of the transformer. In order to form the system for inductive energy transfer, the energizable load 2 is to be placed on the inductive powering device 9, whereby the surface 2a will contact the surface 7. The inductive powering device 9 comprises a further magnetizable conductor 9a provided with a further winding 9b thus forming a primary wiring of the split-core electric transformer.

Abstract: A coil unit includes a planar coil, a printed circuit board that includes a planar coil placement section that receives the planar coil, a protective sheet that is provided on a transmission side of the planar coil and protects the planar coil, and a magnetic sheet that is provided on a non-transmission side of the planar coil. The planar coil is placed in the planar coil placement section and is electrically connected to the printed circuit board. The planar coil placement section has a shape that corresponds to an external shape of the planar coil.

Abstract: A method of fabricating a coil-embedded inductor provides steps for obtaining uniform density of coil-embedded inductor. The cavity of a first die is filled with dust before being flipped, and then filled with dust a second time. The dust in the cavity is pressed only once for improving the density.

Abstract: On-die inductively coupled wires and a method of making on-die inductively coupled wires are described. The on-die inductively coupled wires include a first wire to carry a first current, a surface area bounded by a second wire, and, an amorphous soft magnetic layer to couple magnetic flux induced by the first current through the surface area.

Abstract: An integrated current sensing transformer includes a bobbin, a magnetic core assembly, a first primary winding element, a second primary winding element, a secondary winding element. The bobbin has a receptacle therein. The magnetic core assembly is partially embedded into the receptacle for providing a closed path of magnetic flux. The first primary winding element is wound around the bobbin for inputting a first test current therein. The second primary winding element is wound around the bobbin for inputting a second test current therein. The secondary winding element is wound around the bobbin for outputting a sensing current when either the first test current or the second test current is sensed. The magnitude of the sensing current is directly proportional to the magnitude of the first test current or the second test current.

Abstract: A device for energy storage and energy transformation is described, in particular an ignition coil of an ignition system of a motor vehicle, having a magnetically active I core, which is surrounded by a first coil former having a winding connected to a supply voltage, and a second coil former having a winding connected to a high-voltage terminal, and having a peripheral core forming a magnetic circuit with the I core and enclosing the system made up of the first and second coil formers. In its circumferential extension, the peripheral core has a recess to accommodate an end area of the I core.

Abstract: An ignition apparatus for an internal combustion engine includes a central core, a primary coil and a secondary coil arranged outside of the central core, a magnet arranged in abutment with one end face of the central core and magnetized in a direction opposite to the direction of a magnetic flux generated by energization of the primary coil, a side core arranged outside of the first and second primary coils so as to cooperate with the central core and the magnet to form a closed magnetic circuit, and a flexible core cover arranged to cover the side core. The side core includes a first side core section and a second side core section which have their one end faces arranged in abutment with each other. The first and second side core sections have their other ends in abutment against the magnet and the other end face of the central core, respectively.

Abstract: A combination of a radio frequency identification transponder (RFID Tag) and to a magnetic electronic article surveillance (EAS) device is disclosed. The present invention relates generally to radio frequency identification (RFID) systems, and more specifically to RFID transponders for use in RFID systems and the method for their assembly.

Abstract: In order to provide an inductance part having excellent DC superposition characteristic and core-loss, a magnetically biasing magnet, which is disposed in a magnetic gap of a magnetic core, is a bond magnet comprising magnetic powder and plastic resin with the content of the resin being 20% or more on the base of volumetric ratio and which has a specific resistance of 0.1?·cm or more. The magnetic powder used is rare-earth magnetic powder having an intrinsic coercive force of 5 kOe or more, Curie point of 300° C. or more, and an average particle size of 2.0–50 ?m. A magnetically biasing magnet used in an inductance part that is treated by the reflow soldering method has a resin content of 30% or more and the magnetic powder used therein is Sm—Co magnetic powder having an intrinsic coercive force of 10 kOe or more, Curie point of 500° C. or more, and an average particle size of 2.5–50 ?m. A thin magnet having a thickness of 500 ?m or less can be realized for a small-sized inductance part.

Abstract: An inductor component according to the present invention includes a magnetic core including at least one magnetic gap having a gap length of about 50 to 10,000 ?m in a magnetic path, a magnet for magnetic bias arranged in the neighborhood of the magnetic gap in order to supply magnetic bias from both sides of the magnetic gap, and a coil having at least one turn applied to the magnetic core. The aforementioned magnet for magnetic bias is a bonded magnet containing a resin and a magnet powder dispersed in the resin and having a resistivity of 1 ?·cm or more. The magnet powder includes a rare-earth magnet powder having an intrinsic coercive force of 5 KOe or more, a Curie point of 300° C. or more, the maximum particle diameter of 150 ?m or less, and an average particle diameter of 2.0 to 50 ?m m and coated with inorganic glass, and the rare-earth magnet powder is selected from the group consisting of a Sm—Co magnet powder, Nd—Fe—B magnet powder, and Sm—Fe—N magnet powder.

Abstract: Biased core devices and method of use are disclosed in which magnetic core energy losses due to hysteresis and eddy currents are greatly reduced in comparison to the core losses in prior art transformers and inductive devices. The present invention sets forth a transformer or choke device in which permanent magnets are surrounded by electrical steel materials and may be held in place by pole pieces. The magnetic core transformer structure also permits a method of use in which current passing through the device is controlled by the field strength of the permanent magnets. In addition, the biased magnetic core transformer operation may be linear or non-linear, and placed in series or parallel within a circuit. The magnetic components disclosed in the present invention affords both energy loss reductions and size reductions in comparison to known prior art transformers.

Abstract: An inductor component is provided. The inductor component includes a core composed of a hollow core piece and a rod core piece, a bobbin, and bonded magnets. Regarding the hollow core piece and rod core piece, the rod core piece is arranged across the hollow core piece, and joining is performed between the bottom surfaces of both end portions of the rod core piece and the hollow core piece with bonded magnets therebetween.