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| Number | Title | Issue Date |
| 8154373 | Circuit breaker-like apparatus with combination current transformer In a circuit breaker, a current transformer for fault powering trip unit electronics and sensing low currents and high currents includes a core with solid laminations and gapped laminations to sense a wide range of currents from locked-rotor currents to high, instan... | 04/10/2012 |
| 8120457 | Current-controlled variable inductor A variable inductor comprises one or more magnetic cores providing magnetic flux paths. An inductor coil is wound around one or more inductor sections of the one or more magnetic cores. An inductor magnetic flux flows through one or more closed flux paths along the ... | 02/21/2012 |
| 8115584 | Induction device An induction device for association with high voltage electric transmission systems having at least one core frame and at least one winding arranged around said core frame. The induction device has at least one magnetic core leg arranged in said core frame. The core... | 02/14/2012 |
| 8102230 | Inductive coupler connector An inductive coupler connector arrangement for transferring electrical energy between a first connector part to a second connector part. The first and second connector parts have respective ones of first and second magnetic core limbs of which at least one limb carr... | 01/24/2012 |
| 7965163 | Reactor core and reactor Provided is an annular reactor core formed of a U-shaped core and core legs. Core joints including end portions and two protrusions form the U-shaped core. Between the protrusions of these core joints, a plurality of (two) core legs 6 formed of core blocks ar... | 06/21/2011 |
| 7864013 | Devices and methods for redistributing magnetic flux density Redistributing magnetic flux density within electro-magnetic or permanent magnet devices, as described herein, causes the device to increase its utilization of its magnetic core material and thereby increase its power density (Watts/volume). The preferred embodiment... | 01/04/2011 |
| 7839250 | Transformer with leakage inductance A transformer includes a bobbin and a core assembly. The bobbin includes a pair of first winding portions to wrap primary winding coils thereon and a second winding portion between the pair of first winding portions to wrap secondary winding coils thereon. The core ... | 11/23/2010 |
| 7777605 | Induction coupling apparatus To provide a structure capable of securing satisfactory induction coupling efficiency and high reliability in manufacturing an induction coupling apparatus used in power line carrier communication, the induction coupling apparatus having a magnetic core formed from ... | 08/17/2010 |
| 7701317 | Low AC resistant foil winding for magnetic coils on gapped cores A system and method reduces AC losses in a magnetic coil with a magnetic core with one or more gaps. A foil winding is formed with one or more cavities and is positioned about the magnetic core such that the cavities are adjacent to the gaps. ... | 04/20/2010 |
| 7579936 | Choke transformer used in liquid crystal display backlight driver Disclosed is a choke transformer used in liquid crystal display (LCD) backlight driver, comprising a winding base on which a plurality of spacers are formed and having a hollow structure, a core received within the winding base and a plurality of windings wound betw... | 08/25/2009 |
| 7573362 | High current, multiple air gap, conduction cooled, stacked lamination inductor A power inductor assembly includes and multiple coil sections disposed upon a mounting frame. Multiple winding sections each encircle one of the multiple core sections and a portion of the mounting frame. Air gap spacers separate adjacent core sections. The arrangem... | 08/11/2009 |
| 7567163 | Precision inductive devices and methods A low cost, low profile, small size and high performance inductive device for use in, e.g., electronic circuits. In one exemplary embodiment, the device includes a ferrite core comprising multiple inductors and optimized for electrical and magnetic performance. Impr... | 07/28/2009 |
| 7508290 | Inductive component and use of said component An inductive component, for the formation of a magnetic circuit has at least one wire winding and at least one core with a ferromagnetic core material. The core comprises a gap and at least one further gap to interrupt the magnetic circuit. The inductive component i... | 03/24/2009 |
| 7489219 | Power inductor with reduced DC current saturation A power inductor includes a first magnetic core having first and second ends. The first magnetic core includes ferrite bead core material. An inner cavity arranged in the first magnetic core extends from the first end to the second end. A conductor passes through th... | 02/10/2009 |
| 7479861 | Inductively coupled power, useful for wireless elevator hall fixtures Fixtures (27) at a doorway of a landing are formed integrally with a frame (17). Power is provided by an inductive coupler (32) having a core (70) and primary (75). The core is thin ferrite and extend significantly beyond the coils... | 01/20/2009 |
| 7449985 | Magnetic element and method of manufacturing magnetic element A problem to be solved is to stabilize temperature characteristics in various characteristics of a magnetic element. A magnetic element has a coil formed by winding a conductor, EP cores constituted of a magnetic material and passing magnetic flux generated in the c... | 11/11/2008 |
| 7443275 | Device for absorbing noise A device for absorbing electrical noise on cables containing a housing comprising a pair of halfshells is disclosed. A grooved ferrite component resides within each halfshell. Flat tabs that come to rest between facing surfaces of the ferrite components when the hou... | 10/28/2008 |
| 7412766 | Method of fabricating coil-embedded inductor 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 on... | 08/19/2008 |
| 7375607 | DC transformer with an output inductance integrated on a magnetic core thereof and a DC/DC converter employing the same A DC/DC converter includes an input filter, a half-bridge converter without PWM (Pulse Width Modulation) control function, a synchronous rectifier, an output capacitor, and a DC transformer. The DC transformer includes a magnetic core, a primary winding, a first sec... | 05/20/2008 |
| 7365501 | Inverter transformer An inverter transformer includes a coil unit including a bobbin and a plurality of windings, and a transformer core unit. The bobbin is formed with a core-receiving compartment, and includes first, second and third coil winding portions. The windings are wound aroun... | 04/29/2008 |
| 7352269 | Method for making magnetic components with N-phase coupling, and related inductor structures Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how... | 04/01/2008 |
| 7345567 | Inverter transformer Variation in inductance and leakage inductance between the secondary windings is reduced thereby making lamp currents uniform and thus preventing the occurrence of uneven brightness. A two-output inverter transformer comprises a bobbin having a primary winding wound... | 03/18/2008 |
| 7342476 | Leakage transformer This is a small-size transformer that is made easily. Two bobbins around which a secondary coil is wound insert into bobbin protrusions from the opening surface side of the first core whereby the two bobbins are positioned in a row. A coiling protrusion around which... | 03/11/2008 |
| 7339146 | Low cost microwave over components manufactured from conductively doped resin-based materials Microwave oven components are formed of a conductively doped resin-based material. The conductively doped resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resin hos... | 03/04/2008 |
| 7336148 | Structure of inductor An improved structure of inductor includes a C-shaped core and a prismatic strut core. The C-shaped core has two extended portions and a side portion that has its two ends connected to a fixed end of each of the extended portions. The prismatic strut core has a bott... | 02/26/2008 |
| 7332992 | Transformer Disclosed herein is a transformer including: an iron core; and a winding wound around the iron core; wherein the iron core includes a column-shaped output side iron core part, a plurality of column-shaped input side iron core parts, and a connecting iron core part, ... | 02/19/2008 |
| 7315231 | Electrical reactor assembly having center taps An electrical reactor assembly and method of assembly is disclosed. The reactor is formed from a combination of a magnetic T-core and a pair of magnetic L-cores. A plurality of comb-like separators is placed over a vertical portion of the T-core. A wire, with a rect... | 01/01/2008 |
| 7307504 | Current transformer, circuit interrupter including the same, and method of manufacturing the same A current transformer includes a CT core having a central opening, a height, a width, inner and outer radii, and a secondary winding disposed about the CT core. The CT core is formed from a winding of an elongated length of taped steel having a reluctance and a widt... | 12/11/2007 |
| 7301440 | Power line communication system and method The present invention provides a device for providing communications through power lines comprised of multiple conductors by transmitting the data signals through a plurality of the conductors. One embodiment of the present invention may be comprised of a transmit c... | 11/27/2007 |
| 7295092 | Gapped core structure for magnetic components A magnetic component includes a first monolithic core structure having a plurality of magnetic layers and at least one nonmagnetic layer separating one of the plurality of magnetic layers from another of the plurality of magnetic layers. A first opening extends thro... | 11/13/2007 |
| 7295091 | Leakage transformer This is a small-sized transformer that is made easily. Two bobbins around which a secondary coil is wound insert into bobbin protrusions from the opening surface side of the first core whereby the two bobbins are positioned in a row. A coiling protrusion around whic... | 11/13/2007 |
| 7295094 | Low profile magnetic element A low profile magnetic element used in cooperation with a multilayer printed circuit board has two or more core arms penetrating the board from one outer surface to the other and a series of magnetic core elements, at least one on each side of the board, bridging pa... | 11/13/2007 |
| 7292128 | Gapped core structure for magnetic components A single piece core structure for magnetic components that is formed without utilizing insulating spacer materials and bonding materials. ... | 11/06/2007 |
| 7289013 | Bulk amorphous metal inductive device A bulk amorphous metal inductive device includes a magnetic core having at least one low-loss bulk ferromagnetic amorphous metal magnetic component forming a magnetic circuit having an air therein. The component has a plurality of similarly shaped layers of amorphou... | 10/30/2007 |
| 7280026 | Extended E matrix integrated magnetics (MIM) core A matrix integrated magnetics (MIM) “Extended E” core in which a plurality of outer legs are disposed on a base and separated along a first outer edge to define windows therebetween. A center leg is disposed on the top region of the base and separated from the o... | 10/09/2007 |
| 7273135 | Low cost magnetic brakes and motion control devices manufactured from conductive loaded resin-based materials Magnetic brake components are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resin host.... | 09/25/2007 |
| 7271691 | Method of winding coil and transformer and inverter liquid crystal display having coil wound using the same A method of winding a coil of a transformer in an inverter of a liquid crystal display including a bobbin wound with a coil and a core introduced into the bobbin, the method includes forming a coil winding part having no protrusion member at the bobbin so as to excl... | 09/18/2007 |
| 7268657 | Coil component The coil component of the present invention is configured in that one secondary winding is coiled between central portion and end portion of outer magnetic leg, and the other secondary winding is coiled between central portion of outer magnetic leg and first gap por... | 09/11/2007 |
| 7265651 | Inductive component and method for the production thereof The invention relates to an inductive component (10) whose soft magnetic core (11) is produced by pouring a casting resin into a mold (1a) filled with a soft magnetic alloy powder and by subsequently hardening the casting resin with the a... | 09/04/2007 |
| 7259650 | Magnetic element A magnetic element including coils; a first core and a second core each of which has a planar plate portion, outer leg portions and a middle leg portion which is inserted into aforesaid coil; and an intermediate core to form a closed magnetic circuit which is dispos... | 08/21/2007 |
