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| Number | Title | Issue Date |
| 8035470 | Protection of permanent magnets in a DC-inductor 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 th... | 10/11/2011 |
| 7940151 | Inductive device including permanent magnet and associated methods 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 electrica... | 05/10/2011 |
| 7889040 | DC inductor 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 t... | 02/15/2011 |
| 7847663 | Filtering choke arrangement 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 arrang... | 12/07/2010 |
| 7800474 | Bond magnet for direct current reactor and direct current reactor 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 allo... | 09/21/2010 |
| 7777604 | Ignition coil 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 th... | 08/17/2010 |
| 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 |
| 7372353 | Inverse phase converter An inverse phase converter includes a first bobbin, a plurality of second bobbins, a first magnetic core and a second magnetic core. The first magnetic core and the second magnetic cores are overlapped and coupled to form at least one closed magnetic path. The first... | 05/13/2008 |
| 7362202 | Inductance element and case An inductance element and a case; the inductance element, comprising a winding type magnetic core having a hollow part formed by winding a magnetic ribbon thereon and a lead having a cross sectional dimension smaller than the inner diameter of the hollow part of the... | 04/22/2008 |
| 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 |
| 7301430 | High voltage transformer for controlling inductance leakage A high voltage transformer for controlling inductance leakage used for a multiple lamp driving system includes at least one wire frame, a first winding, a second winding, a first magnetic unit, and a second magnetic unit. There is a receiving space in the wire frame... | 11/27/2007 |
| 7295097 | Energy saving system for a unit requiring electricity An electrical energy saving device or a magnetic induction device is adapted to surround a power delivery line. The magnetic induction device applies a magnetic field region to the power delivery line to reduce amperage up to about 25%. The magnetic induction device... | 11/13/2007 |
| 7280022 | Inverter transformer An inverter transformer in which to overall structure and manufacturing process can be simplified despite its closed magnetic path structure, and a cost increase can be suppressed. Primary windings (24a, 24b, 24c) and second... | 10/09/2007 |
| 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 |
| 7256678 | Magnetically controlled inductive device 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 ar... | 08/14/2007 |
| 7230419 | Rotary position sensor A rotary position sensor measures the relative angular position (within a range of≦180°) of a housing or stator and a rotor. The housing carries a galvanomagnetic sensing element and is adapted for fixation to a relatively fixed portion of a host system. The roto... | 06/12/2007 |
| 7222034 | In-circuit measurement of saturation flux density Bsat, coercivity Hc, and permiability of magnetic components using a digital storage oscilloscope An oscilloscope performs an in-circuit measurement of voltage across, and current through, a core winding of an inductor, and derives the actual B and H values with n number of turns, receives data indicative of the magnetic length of the circuit, and plots the B_H ... | 05/22/2007 |
| 7212092 | Device for energy storage and energy transformation 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 voltag... | 05/01/2007 |
| 7208943 | Electrical device enclosure A robust, low cost, compact and highly accurate rotary position sensor is disclosed for measuring the relative angular position (within a range ≦180°) of a housing or stator and a rotor. The housing carries a galvanomagnetic sensing element and is adapted for fix... | 04/24/2007 |
| 7202767 | Ignition apparatus for an internal combustion engine 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 t... | 04/10/2007 |
| 7196605 | Inductance element and case An inductance element and a case; the inductance element, comprising a winding type magnetic core having a hollow part formed by winding a magnetic ribbon thereon and a lead having a cross sectional dimension smaller than the inner diameter of the hollow part of the... | 03/27/2007 |
| 7183889 | High-voltage transformer A high-voltage transformer 11 is provided with first and second bobbins 21A, 21B wound with primary windings 45A, 45B and secondary windings 46A, 46B respectively, I-shaped first and second cores 30A, 30... | 02/27/2007 |
| 7180399 | Transformer for resonant inverter A transformer for resonant inverter, which utilizes magnetic substances infilled between a primary coil and a secondary coil to compel part of the magnetic lines of force of the primary coil not to cross-link with the secondary coil, which thereby achieves regulatin... | 02/20/2007 |
| 7176777 | Transformer and lamp driving system utilizing the same A transformer includes a bobbin, a first magnetic core, a first and a second coils and a second magnetic core. The first magnetic core is disposed in the bobbin. The first coil and the second coil respectively wind around the bobbin. The second magnetic core covers ... | 02/13/2007 |
| 7170383 | Method and apparatus for transferring energy in a power converter circuit 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 w... | 01/30/2007 |
| 7148680 | Rotation angle detecting device including magnetic member with concave surface A rotation angle detecting device for a rotation object includes a rotor and a pair of permanent magnets and a magnetic detector disposed at the rotation axis of the rotation object. One of the permanent magnets has a circumferentially extending rut-shape concavity ... | 12/12/2006 |
| 7135950 | Thin transformer A thin transformer includes a hollow coil bobbin around which a coil is wound, an iron core provided to pass through a portion of the coil bobbin, and a terminal section having several terminals electrically connected to drawn-out lines of the coil and electrically ... | 11/14/2006 |
| 7116204 | Leakage transformer A leakage transformer capable of preventing occurrence of a short-circuit of a secondary winding and is also capable of restraining a distance between terminals from becoming wide is provided. A leakage transformer (10) has a structure such that a secondary w... | 10/03/2006 |
| 7098765 | Ignition coil having magnetic flux reducing inner structure An ignition coil is constructed of a center core, a primary coil, a secondary coil, and an outer circumferential core. The center core and the outer circumferential core are connected with each other via a first magnetoresistive member on one axial end side. The cen... | 08/29/2006 |
| 7088095 | Balanced magnetic linear displacement sensor A magnetic linear displacement sensor. In accordance with one embodiment, the displacement sensor includes a Hall transducer element having a sensor plate surface and at least one magnet having a lengthwise dimension along which said Hall element detects a magnetic ... | 08/08/2006 |
| 7061358 | Structure of inductance core and wire frame An improved structure of inductance core and wire frame mainly provides a center post at the center portion of the core. A containing circumferential channel is also provided at the periphery of the center post to make the outer circumference of the containing circu... | 06/13/2006 |
| 7015785 | Inverter transformer and core structure thereof An inverter transformer and a core structure thereof are described. The core structure of the inverter transformer has a first core and a second core. The first core has a plurality of fork elements, a connection element, and a bottom element. The fork elements are ... | 03/21/2006 |
| 7002475 | Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag 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 R... | 02/21/2006 |
| 6995643 | Magnetically biasing bond magnet for improving DC superposition characteristics of magnetic coil 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 conte... | 02/07/2006 |
| 6952868 | Magnet assembly apparatus An assembly apparatus for a magnet assembly is disclosed. The assembly apparatus includes first and second assembly nests and an assembly slide operable between an advanced position relative to the assembly nests and a retracted position for assembly. As disclosed t... | 10/11/2005 |
| 6906608 | Magnetic core including magnet for magnetic bias and inductor component using the same 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 μm in a magnetic path, a magnet for magnetic bias arranged in the neighborhood of the magnetic gap in ord... | 06/14/2005 |
| 6885272 | Permanent magnetic core device 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 tran... | 04/26/2005 |
| 6853285 | Inductor component 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 pi... | 02/08/2005 |
| 6791446 | Inductance component comprising a permanent magnet greater in sectional area than a magnetic path and disposed in a magnetic gap An inductance component includes a magnetic core (11, 12) forming a magnetic circuit having a magnetic gap, an exciting coil (14) wound around the magnetic core, and a permanent magnet (13) disposed in the magnetic gap. The permanent magnet is g... | 09/14/2004 |
| 6778056 | Inductance component having a permanent magnet in the vicinity of a magnetic gap An inductance component comprises a magnetic core having at least one magnetic gap, means for generating a direct-current biased magnetic field produced by mounting a permanent magnet in the vicinity of a generally closed magnetic circuit which passes through the ma... | 08/17/2004 |
