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| Number | Title | Issue Date |
| 8169290 | Methods and apparatus for electromagnetic components Methods and apparatus for electromagnetic components comprise a core and a winding. The core and winding are configured to provide smaller and more effective electromagnetic components. ... | 05/01/2012 |
| 8138878 | Current-compensated choke and method for producing a current-compensated choke The invention relates to a current-compensated choke with a ring core at least two coils composed in each case of the same number of windings, wherein in the interior of the ring core a non-conductive body is arranged with holes embodied in pairs in a mirror symmetr... | 03/20/2012 |
| 8072308 | High voltage transformer and a novel arrangement/method for hid automotive headlamps A high voltage split core transformer and method of assembling same is provided by which the coupling factor is improved. A split core assembly is surrounded by a secondary winding that is precisely located in a burner assembly housing. Conductive members are encase... | 12/06/2011 |
| 8009009 | Coil module A coil module comprises a circular core and a winding is provided. The circular core comprises an outer circular portion and an inner circular portion. The winding is wound around the outer circular portion in a single-layer configuration and around the inner circul... | 08/30/2011 |
| 7990248 | Insulation alement and toroidal core throttle A toroidal core choke includes a toroidal core and an insulating part. The insulating part includes a separating device for separating winding spaces on the toroidal core. The separating device includes a divider and a spacer on an end of the divider. A width of the... | 08/02/2011 |
| 7965167 | Inductive conductivity sensor A conductivity sensor for measuring conductivity of a medium surrounding the conductivity sensor includes a first toroidal coil bounding a medium-receiving passageway and serving for inducing an electrical current in the medium, and a second toroidal coil also bound... | 06/21/2011 |
| 7902956 | Filtering choke arrangement A polyphase filtering choke arrangement of a power electronics appliance, more particularly of a frequency converter. which arrangement comprises two separate magnetic cores, around both of which a polyphase winding is arranged, particularly for filtering the harmon... | 03/08/2011 |
| 7889047 | Magnetic device A magnetic device includes a circuit board, a magnetic induction element, an insulating structure and a plurality of conductive wire segments. The circuit board has at least one conductive layer. The magnetic induction element is disposed on the circuit board. The i... | 02/15/2011 |
| 7880579 | Carrier device for a toroidal-core choke, holder for an inductive component, and inductive component A carrier device for a toroidal-core choke includes a base plate, which has projecting wire-guiding devices. A holder for an inductive component includes the carrier device and an electrical isolation device. The holder can be part of an inductive component. ... | 02/01/2011 |
| 7868730 | Common-mode filtering device and speed variator comprising such a device The invention relates to a filtering device which includes a common-mode inductor (LF) comprising a winding (L1, L2) on each line of an AC power supply and a magnetic core made up of a first torus (T1) and a second torus (... | 01/11/2011 |
| 7855629 | Methods and apparatus for electromagnetic components Methods and apparatus for electromagnetic components comprise a core and a winding. The core and winding are configured to provide smaller and more effective electromagnetic components. ... | 12/21/2010 |
| 7834736 | Dry type pole-mounted transformer 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 ... | 11/16/2010 |
| 7821374 | Wideband planar transformer A method of arranging and fabricating parallel primary and secondary coils of a wideband planar transformer is provided. The spacing and width of the coils are disposed to extend the bandwidth from DC to GHz and allow for high frequency coupling when the core permea... | 10/26/2010 |
| 7808360 | Cushioning materials and method for applying the same to resin cast transformers A resin cast transformer having a core covered by a cushioning material is provided. The cushioning material is in contact with the core and includes a force absorption layer adjoining a force distribution layer. The force distribution layer is harder than the force... | 10/05/2010 |
| 7808359 | Quad-gapped toroidal inductor A high power, high frequency toroidal inductor is broken into four quadrant cores and uses bare rectangular conductors to form coils. One coil is wound centrally around each quadrant. The coils positioned centrally on the quadrants minimize the effect of damaging fr... | 10/05/2010 |
| 7746211 | Lamp transformer assembly 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 c... | 06/29/2010 |
| 7741945 | Dry-type transformer with improved terminal construction and mounting system therefor The invention is directed to a transformer having a ferromagnetic core with a coil disposed around the core. An insulation layer is disposed over the core and the coil and terminals are connected to the coil. Each of the terminals is formed from cast metal and has a... | 06/22/2010 |
| 7724118 | Pulse transformer with a choke part 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 o... | 05/25/2010 |
| 7656265 | Apparatus and method for establishing a magnetic circuit An apparatus for establishing at least one turn for a magnetic circuit includes: (a) at least one first magnetic element oriented substantially about an axis generally between a first axial position and a second axial position; and (b) at least one second magnetic e... | 02/02/2010 |
| 7656266 | Toroidal star-shaped transformer A toroidal power transformer is disclosed. The toroidal power transformer comprises a circular core composed of plurality of laminated electrically conductive materials, a plurality of multi-layered first windings radially wound around the circular core, said windin... | 02/02/2010 |
| 7652551 | Toroidal inductive devices and methods of making the same An inductive device comprises an electric winding component having a generally toroidal shape, and a plurality of discrete magnetic components at least partially embracing the electric winding component so as to complete a magnetic flux path and to form at least one... | 01/26/2010 |
| 7649434 | Multiphase voltage regulator having coupled inductors with reduced winding resistance A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. The inductors are inversely coupled. In a first embodiment, the converter includes a toroidal magnetic core with inductors extending under and over opposite si... | 01/19/2010 |
| 7623017 | Toroidal inductive devices and methods of making the same A toroidal inductive device has an electrical winding component (11) of generally toroidal shape and discrete magnetic components (12) shaped as toric sections. The discrete magnetic components (12) are arranged on the electrical winding compone... | 11/24/2009 |
| 7616088 | Low leakage inductance transformer A toroidal step-up or step-down transformer includes a toroidal magnetic core, a primary formed from a plurality of primary windings, and a secondary formed from a plurality of secondary windings. Parallel connected windings are added to at least one of the primary ... | 11/10/2009 |
| 7573364 | Coil unit A coil unit including an annular toroidal core, two coils wound over the toroidal core providing a bifilar winding, a winding-start positioning part, and a winding-end positioning part. The winding-start positioning part is adapted for making contact with a winding-... | 08/11/2009 |
| 7573363 | Communication transformer for power line communication A communication transformer for power line communication includes a magnetic core, a plurality of transfer-purpose windings wound on the magnetic core, and an additional winding. The additional winding is wound on the magnetic core in such a manner that the addition... | 08/11/2009 |
| 7564336 | Surface mount magnetic core with coil termination clip A core assembly for a surface mount electronic component includes a core fabricated from a magnetic permeable material and having a top surface, a bottom surface, and an outer side surface interconnecting the top and bottom surfaces. At least one coil termination cl... | 07/21/2009 |
| 7489226 | Fabrication method and structure for embedded core transformers An embedded core electrical transformer (120) for DC to DC current conversion at a switching frequency of 1 MHz has reduced volume and weight with increased power density. The electrical transformer (120) utilizes a plurality of conductive elements ( | 02/10/2009 |
| 7479865 | Mounting device, support device for a toroidal core choke, and inductive component A mounting device for a toroidal core, preferably insertable into a toroidal core, has a catch device and thus fixable on a counterpart, as well as a support device for a toroidal core choke. The support device has at least one catch device on which mounting device ... | 01/20/2009 |
| 7474193 | Toroidal line filter and method of winding coil of toroidal line filter Disclosed is a toroidal line filter with coils wound through various winding processes such that an inductance characteristic for a certain frequency can be improved through changes in current flowing direction and/or area, whereby the toroidal line filter can compe... | 01/06/2009 |
| 7471181 | Methods and apparatus for electromagnetic components Methods and apparatus for electromagnetic components comprise a core and a winding. The core and winding are configured to provide smaller and more effective electromagnetic components. ... | 12/30/2008 |
| 7439843 | Transformers A transformer includes at least two magnetically coupled cores with a common axis. The cores have cross sectional configurations transverse to the common axis which are not rectangular. An exciting voltage is to be applied across a first winding provided on one of t... | 10/21/2008 |
| 7436282 | Miniature circuitry and inductive components and methods for manufacturing same Miniature circuitry and inductor components in which multiple levels of printed circuitry are formed on each side of a support panel, typically a printed circuit board or rigid flex. Magnetic members are embedded in one or more cavities in said support panel. Electr... | 10/14/2008 |
| 7400224 | Device for electrical isolation, toroidal core choke, and method for producing the toroidal core choke A device for electrical isolation is suitable for installation in the core hole of a toroidal core. The device includes a center section that has a rotational axis, and branches that extend outwards and that are deformable in the rotational direction about the rotat... | 07/15/2008 |
| 7389576 | Method of manufacturing micro flux gate sensor A method of manufacturing a micro flux gate sensor that has a good electrical connection and can be easily manufactured includes operations of forming a metal pattern, forming a first insulation layer to cover the metal pattern and forming viaholes to expose a certa... | 06/24/2008 |
| 7380328 | Method of forming an inductor The invention includes a stacked open pattern inductor fabricated above a semiconductor substrate. The stacked open pattern inductor includes a plurality of parallel open conducting patterns embedded in a magnetic oxide or in an insulator and a magnetic material. Em... | 06/03/2008 |
| 7375611 | Embedded step-up toroidal transformer An embodied step-up toroidal transformer (100). The step-up toroidal transformer (100) includes a plurality of coil segments (102, 104, 106, 108). Each primary coil segment (102, 104, 106, 108) is separately comprised of a plurality of tu... | 05/20/2008 |
| 7372354 | Detector circuit to be used for measuring current A detector circuit to be used for measuring current and including a main current transformer and two substantially identical auxiliary current transformers, where magnetomotive forces are induced by a main current, said magnetomotive forces being counteracted by mag... | 05/13/2008 |
| 7367113 | Method for fabricating a transformer integrated with a semiconductor structure A substrate is provided and a top interconnection metal layer and a primary winding layer are formed thereon. Then a passivation layer having a plurality of via exposed parts of the top interconnection metal layer is formed on the substrate. A secondary winding laye... | 05/06/2008 |
| 7360294 | Method of assembling an inductive proximity sensor A method of assembling an inductive proximity sensor maintains inductive coil wound bobbins in fixed relation to an inductive core within a housing. The method includes configuring two inductive coil wound bobbins with an integral ledge cantilevered from an inside s... | 04/22/2008 |
