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| Number | Title | Issue Date |
| 7355871 | Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components An energy transfer element having an energy transfer element input winding, an energy transfer element output winding and energy transfer element windings that reduce displacement currents. In one aspect, an energy transfer elements includes an energy transfer eleme... | 04/08/2008 |
| 7317372 | Air-core coil and process for fabricating the same The present invention provides an air-core coil 21 wherein one conductor is wound into a spiral form to thereby form consecutively, axially of the coil, a plurality of unit turn portions (25, 26, 27) which are different from each other in inner periphe... | 01/08/2008 |
| 7312683 | Symmetrical inductor A symmetrical inductor. The inductor comprises first and second winding portions with a symmetrical arrangement and a coupling portion. Each winding portion comprises first, second, third and fourth semi-circular conductive lines arranged in concentricity and having... | 12/25/2007 |
| 7303104 | Power generator of nail drive A power generator of a nail drive comprises a body; a cylinder in the body; a plug in the cylinder; a plug in the cylinder; and a magnetic element on the plug. The movement of the plug will drive the magnetic element to pass through the induction coil so that the in... | 12/04/2007 |
| 7301428 | Printed circuit board transformer An object of the invention is to provide a PCB transformer having plural output channels, which can suppress a voltage fluctuation in each output channel to supply a stable output without the need for a larger body, even though an input load fluctuates. The PCB tran... | 11/27/2007 |
| 7278124 | Design method for semiconductor integrated circuit suppressing power supply noise An impedance of a power supply wire is calculated based on design data of a semiconductor integrated circuit, a frequency characteristic of the calculated impedance is obtained, and a design of the semiconductor integrated circuit is changed based on the obtained fr... | 10/02/2007 |
| 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 |
| 7256675 | Energy transfer apparatus for reducing conductivity electromagnetic interference and manufacturing method thereof An energy transfer apparatus is developed for reducing a conductivity electromagnetic interference and manufacturing method. The energy transfer apparatus comprises a core, an input winding, an output winding, a supply voltage and a supply winding. The supply windin... | 08/14/2007 |
| 7236078 | Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components A method of transferring energy is disclosed. In one aspect, a method includes transferring energy from a first winding wound around a transformer core to a second winding wound around the transformer core. The first and second windings capacitively coupled to elect... | 06/26/2007 |
| 7199569 | Switching power supply unit A switching power supply unit is provided, in which core loss in a transformer or a level of heating due to AC resistance of the transformer can be reduced. A switching power supply unit has a transformer, an inverter circuit and a rectifier circuit. In a secondary ... | 04/03/2007 |
| 7148779 | Pulse type transformer with increased coupling coefficient through configuration of plural primary windings The present invention provides a low duty cycle, high current DC pulse type transformer with increased coupling coefficient between the primary and secondary windings by changing the proximity of the primary windings to the secondary windings through a plurality of ... | 12/12/2006 |
| 7119647 | Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components without requiring additional windings An energy transfer element having an energy transfer element input winding and an energy transfer element output winding. In one aspect, the energy transfer element input winding is capacitively coupled to the energy transfer element output winding. The energy trans... | 10/10/2006 |
| 7098764 | Main conductor for a capacitively controlled high-voltage winding In a main conductor for a capacitively controlled high-voltage winding composed of pancake coils for transformers, in which the main conductor for the load current is realized as a twisted conductor, and in which a control conductor is provided which is spatially ar... | 08/29/2006 |
| 7068778 | Integrated line inductor and line feed resistor An integrated line inductor and line feed resistor is disclosed. A first coil winding and a second coil winding having a select resistance are magnetically coupled to each other. The first coil winding and second coil winding are each operable to transform electric ... | 06/27/2006 |
| 7049923 | Ignition coil assembly utilizing a single internal floating shield buffered at one end An ignition apparatus includes a core formed of magnetically-permeable material extending along a main axis, a primary winding disposed about the core, a secondary winding disposed on a secondary winding spool wherein at least one of the secondary winding leads is c... | 05/23/2006 |
| 7039360 | External noise intrusion prevention device, signal amplifier, protector and antenna plug An external noise intrusion prevention device preventing intrusion of external noise into a central conductor of a trunk cable in an up signal frequency band is provided. A first filter circuit 3 letting a signal in frequencies of 54 MHz or higher pass is pro... | 05/02/2006 |
| 6960968 | Planar resonator for wireless power transfer A planar resonator and method of manufacture provides contactless power transfer using at least two electrically isolated axis aligned conductive across the transfer interface in a coupled inductor or transformer configuration. Signal or power transfer is then accom... | 11/01/2005 |
| 6956188 | Induction heating coil with integrated resonant capacitor and method of fabrication thereof, and induction heating system employing the same An induction heating coil with integrated resonant capacitor is provided, along with methods of fabrication thereof, and induction heating systems employing the same. The induction heating coil includes a cable having a first conductor and a second conductor separat... | 10/18/2005 |
| 6940468 | Transformers or inductors (“transductors”) and antennas manufactured from conductive loaded resin-based materials A low cost moldable transformer or trans-inductor core, referred to in this description as a transductor. Elements of the transductor core are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductor f... | 09/06/2005 |
| 6888436 | Isolation transformers The issue to be resolved by the present invention is to provide isolation transformers with high noise attenuation rates as well as high reliability, in the high-frequency region above a few MHz, by sufficiently suppressing the amplitudes of noise attenuation charac... | 05/03/2005 |
| 6693505 | Inductance element for power capacitor assembly An inductive element is integrally configurable within a power capacitor assembly. The inductive element includes a plurality of electrically conductive sheets electrically connected in parallel, and which sheets are rolled and formed into a generally cyl... | 02/17/2004 |
| 6529363 | Capacitor integrated into transformer by multi-layer foil winding A switched-mode power supply includes at least one capacitor (9) and a transformer having a plurality of windings (12, 17). Advantageously a capacitor (9) is integrated in the transformer by way of at least one multi-layer foil winding (12). This foil win... | 03/04/2003 |
| 6445269 | Dry-type high-voltage winding The invention concerns an air-core primary voltage winding comprising a conductive wire coil coated with an insulating sheath, characterized in that said coil (1) is encapsulated in a high voltage insulating thermoplastic resin (2), and in that it further... | 09/03/2002 |
| 5864460 | Renovated structure of multi-slotted iron rod An improved structure of a multi-slotted iron rod includes a core, a coil, and a lead frame. The core is a rod is made from good magnetic iron powder. The core has a fixture area and a winding area. The winding area has several winding sections and isolat... | 01/26/1999 |
| 5844460 | Wound, solid state inductor Wound, solid state inductors are provided by winding flexible plastic tape having electrically insulative and magnetic permeability properties. Such tape is sometimes referred to as magnetic tape. An electrically conductive layer is placed on at least one... | 12/01/1998 |
| 5764122 | Winding arrangement of a coil To simplify coil production, in particular coils used for high-voltage transformers, a conductor is wound on to a winding form. The conductor comprises a plurality of conductor portions. The conductor portions overlap one another partially and are insulat... | 06/09/1998 |
| 5736916 | High frequency pulse transformer for an IGBT gate drive A pulse transformer for use in a high frequency motor controller to isolate the electronic control stages from the power stages in a motor controller. The primary and secondary windings are wound on a common ferrite core and spaced apart from one another.... | 04/07/1998 |
| 5648723 | Method and apparatus for separating and analyzing composite AC/DC waveforms The present invention includes a method for separating AC and DC components of a composite waveform, and an inductive device capable of performing the method. The present invention also includes a ground fault condition monitoring system containing an ind... | 07/15/1997 |
| 5508673 | High frequency transformer apparatus A transformer designed for 1:N voltage transformation (where 1:N may be any rational number) at high frequencies (such as over 7 megahertz) can achieve acceptable frequency response and attendant improved values of signal attenuation and signal distortion... | 04/16/1996 |
| 5495213 | LC noise filter The present invention provides an LC noise filter consisting of a capacitance and an inductance, including a first insulation sheet having a plurality of portions folded alternately in the opposite directions and stacked one above another; a first conduct... | 02/27/1996 |
| 5337028 | Multilayered distributed filter The present invention reduces the volume and weight of capacitive and inductance devices, particularly used in filters, by combining the capacitive elements and inductive elements into the same construction. Accordingly, alternating conducting and dielect... | 08/09/1994 |
| 5245521 | Suppression of transformer capacitive current A method and apparatus for suppressing capacitive current in transformers is described. The winding of a transformer is constructed or modified into two substantially identical winding halves wired in a series aiding configuration. Two leads emanate from ... | 09/14/1993 |
| 5227745 | Line filter assembly A line filter assembly adapted to be inserted in an electrical power supply circuit of various electronic appliances for avoiding an invasion and leakage of noise include first and second core members each having a pair of opposite arms connected together... | 07/13/1993 |
| 5187456 | Line filter A line filter arranged in such a manner that a foil conductors are used as the coil conductor and the shield plate, and a reactor is formed therein by laminating and winding the foil conductor and the shield plate with an insulating material held therebet... | 02/16/1993 |
| 5155457 | Line filter assembly A line filter assembly adapted to be inserted in an electrical power supply circuit of various electronic appliances for avoiding an invasion and leakage of noise includes first and second core members each having a pair of opposite arms connected togethe... | 10/13/1992 |
| 5153812 | Composite LC element A composite LC element including integrally a coil and a capacitor which comprises a layered film structure wherein insulating films and electrode sheets with terminals at their both ends are alternately laminated, said layered film structure being wound ... | 10/06/1992 |
| 5150046 | Noise-shielded transformer A noise-shielded transformer is constructed with a toroidal core having mounted thereon a secondary winding, a bifilar shield winding, a conductive plate, an insulating member, a high voltage winding, and a primary winding. The secondary winding is locate... | 09/22/1992 |
| 5093613 | Transformer A transformer with interference suppression includes a primary winding (1) with a first primary coil (27), one end of which is connected to a primary reference point (19), and also includes a second primary coil (39). The transformer has a secondary windi... | 03/03/1992 |
| 5075663 | Noise-shielded transformer A noise-shielded transformer which suppresses electrical noises by absorbing conductible electrical noises that flow into the power line to cause interference, consisting of a gapless-type toroidal core, a primary winding and a secondary winding uniformly... | 12/24/1991 |
| 5023585 | Common-mode choking coil A common-mode choking coil comprises a closed magnetic path core which is formed, for example, by combining two U-shaped cores. Two coils wound in opposite respective directions are mounted on two legs of the closed magnetic path core. These coils are for... | 06/11/1991 |
