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| Number | Title | Issue Date |
| 8164407 | Power supply circuit and illumination system [Problems to be Solved] To solve a problem that introducing electric appliances such as a transmitter for transmitting micro radio waves such as Bluetooth and RFID, a transmitter for transmitting infrared rays, and a camera for capturing an image into an in-house re... | 04/24/2012 |
| 8035471 | Power inductor with reduced DC current saturation A power inductor comprises a magnetic core material having first and second ends. An inner cavity arranged in said magnetic core material extends from the first end to the second end. A conductor passes through the cavity. A slotted air gap is arranged in the magnet... | 10/11/2011 |
| 7965162 | Current sensor An electrical current sensor comprises a magnetic circuit with an air-gap, a magnetic field sensor positioned in the air-gap, and a secondary coil surrounding a branch of the magnetic circuit. The magnetic circuit comprises at least two parts (18, 20) that ar... | 06/21/2011 |
| 7961071 | Multiphase inductor and filter assemblies using bundled bus bars with magnetic core material rings A multiphase inductor assembly includes an elongate conductor assembly including a plurality of bus bars that are arranged in parallel. A plurality of magnetic core material rings (e.g., ferrite or mu metal rings) surround the conductor assembly and are distributed ... | 06/14/2011 |
| 7880576 | Electromagnetic noise absorber An electromagnetic noise absorber to be attached around an electric cable to attenuate noise transmitted through the electric cable. The electromagnetic noise absorber comprises a strip-like base material and a plurality of ferrite pieces fixed to the strip-like bas... | 02/01/2011 |
| 7864012 | Inductive coupler for power line communications, having a member for maintaining an electrical connection There is provided an inductive coupler for coupling a signal to a conductor. The inductive coupler includes (a) a magnetic core having an aperture through which the conductor is routed, (b) a winding wound around a portion of the magnetic core, where the signal is c... | 01/04/2011 |
| 7796005 | Power source for plasma device A plasma device including a power source for creating an AC output signal with a matrix transformer between said power source and a series circuit comprising a first lead and a second lead. The matrix transformer including at least two modules with a first primary p... | 09/14/2010 |
| 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 |
| 7373715 | Method of adjusting a characteristic of wire-wound type chip coil by adjusting the space between conductive wires A wire-wound type chip coil can take various inductance values while maintaining its outer dimension at a specified fixed value. A chip coil is formed by winding at least two conductive wires regularly in a single layer around a core made of a magnetic material and ... | 05/20/2008 |
| 7362206 | Variable transformer A variable transformer has an effective turns ratio that can be varied by electronic switching. By varying the effective turns ratio, the output voltage can be controlled precisely for a varying input voltage and load regulation. The variable transformer is a modula... | 04/22/2008 |
| 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 |
| 7358716 | Measuring method and measuring arrangement for measuring currents with a large dynamic range A measuring method for measuring currents with a large dynamic range by means of a magnetic measuring module has the steps of switching into a high-current mode when a current threshold value is exceeded, and switching into a low-current mode otherwise, wherein the ... | 04/15/2008 |
| 7339453 | Differential mode inductor with a center tap A differential mode inductor includes a first inductor lead that receives a current. A first arm receives the current from the first inductor lead. A center tap receives the current from the first arm. A second arm receives the current from the center tap. The secon... | 03/04/2008 |
| 7319376 | Noise filter An impact and vibration-resistant noise filter avoiding cracking of a core at the time of application of a vibration or impact. The noise filter includes a case and core. The case has a first case portion having a first wall portion, a second wall portion, and a fir... | 01/15/2008 |
| 7307502 | Power inductor with reduced DC current saturation A power inductor includes a first magnetic core material having first and second ends. An inner cavity is arranged in the first magnetic core material that extends from the first end to the second end. First and second notches are arranged in the first magnetic core... | 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 |
| 7286035 | Highly insulated inductive data couplers There is provided an inductive coupler for coupling a signal to a power line. The inductive coupler includes a magnetic core for placement about the power line, and a coil wound around a portion of the magnetic core. The coil includes a coaxial cable having a non-in... | 10/23/2007 |
| 7280025 | Magnetic element The magnetic element includes a core (20) provided with a through hole (21) passing through a tubular portion, a linear conductor (30) having a plated surface, which is to be inserted through the through hole (21), and a mounting terminal... | 10/09/2007 |
| 7273189 | Protective cover for frangible bulb A cover mountable on a support frame for protecting a frangible item mounted within the frame is disclosed. The cover has first and second cover portions engaging the frame on opposite sides of the item. A hinge connects first ends of the covers together and a relea... | 09/25/2007 |
| 7224454 | Apparatus and process for analyzing a stream of fluid An analyzing probe for insertion into numerous different environments to determine at least one characteristic of particulate matter suspended in a fluid stream of a test sample. Preferably, the analyzing probe includes a minimal amount of optical elements such as l... | 05/29/2007 |
| 7221235 | Variable reluctance ferrite core A device, system, and method for suppressing electromagnetic interference (EMI). In one embodiment, an EMI suppression device includes a compound ferrite core having an inner ferrite core and an outer ferrite core. The inner core includes a through hole in which a c... | 05/22/2007 |
| 7218197 | Power inductor with reduced DC current saturation A power inductor comprises a first magnetic core material having first and second ends. An inner cavity is arranged in the first magnetic core material and extends from the first end to the second end. A crossover conductor structure includes a first lead frame that... | 05/15/2007 |
| 7215233 | Inductive coupler for power line communications There is provided an inductive coupler for coupling a signal to a conductor. The inductive coupler includes (a) a magnetic core having an aperture through which the conductor is routed, (b) a winding wound around a portion of the magnetic core, where the signal is c... | 05/08/2007 |
| 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 |
| 7187263 | Printed circuit transformer A circuit board has apertures. Separate magnetic flux paths each form a closed loop that passes through at least one of the apertures and surrounds an interior space. The flux paths comprising portions that lie within magnetically permeable core pieces. At least two... | 03/06/2007 |
| 7176774 | Differential mode inductor with a center tap A differential mode inductor includes a first inductor lead that receives a current. A first arm receives the current from the first inductor lead. A center tap receives the current from the first arm. A second arm receives the current from the center tap. The secon... | 02/13/2007 |
| 7176786 | Method of isolating data in a power line communications network The present invention provides isolation between a power line local area network and another network such as a power line wide area network. In one embodiment of the present invention, a filter device is installed on the power line supplying power to a structure in ... | 02/13/2007 |
| 7173832 | Multifunction power convertor The present invention relates to a multifunction power convertor in the field of power transmission. The multifunction power convertor consists of a rectifier circuit, a filter circuit connecting with the rectifier circuit, an inverter circuit connecting with the fi... | 02/06/2007 |
| 7172452 | Modular cable guide A cable guide module comprises a body portion having at least one groove therein extending across the body portion, the groove having a first open end and a second open end. An attachment mechanism is provided on the body portion for releasably securing the body por... | 02/06/2007 |
| 7158003 | Construction of medium voltage power line data couplers There is provided an inductive coupler for coupling a data signal to a phase line of a power line. The inductive coupler includes a split magnetic core having an aperture formed by an upper magnetic core and a lower magnetic core. The aperture permits the phase line... | 01/02/2007 |
| 7145421 | Device for supplying an electronic protection device to be used in a low-voltage circuit breaker A supply device (1) for an electronic protection device to be used in a low-voltage circuit breaker. The supply device basically comprises a primary conductor (11), a secondary winding (12), a first magnetic circuit (10), and at least one... | 12/05/2006 |
| 7145440 | Broadband coupler technique for electrical connection to power lines Disclosed is a power line broadband communication system having broadband coupler devices capable of direct electrical connection to an energized power line. The coupler includes a conductive portion movable by an adjustable member from a non-conducting retracted po... | 12/05/2006 |
| 7135952 | Electronic transformer/inductor devices and methods for making same The present invention relates to transformer 1 inductor devices and to the methods of construction for inductive components such as inductors, chokes, and transformers. Plural via holes are formed through a ferromagnetic substrate. Primary and secondary condu... | 11/14/2006 |
| 7132819 | Floating power supply and method of using the same A power supply of the present invention comprises a transducer having a transducer and a voltage regulator. The transducer is coupled to an electrically non-conductive medium, which may be a light pipe. The electrically non-conductive medium is coupled to a non-elec... | 11/07/2006 |
| 7130197 | Heat spreader A heat spreader is disclosed. The heat spreader includes a body member, a first fin connected to the body member, a second fin connected to the body member, a third fin connected to the body member, and a fourth fin connected to the body member. The first and second... | 10/31/2006 |
| 7119648 | Coaxial push pull transformers for power converters and like circuits A coaxial push pull transformer is an improved matrix transformer. A number of magnetic cores each contain a pre-wired secondary circuit. The secondary windings are tubular and extend through the core, and the ends of the tubular secondary windings are terminated to... | 10/10/2006 |
| 7103240 | Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line The present invention is drawn to an electrically “closed” method and apparatus for transmitting and receiving data signals over a high voltage power line. Inductive coupling is employed for coupling and decoupling the data signal directly on to and off of a sin... | 09/05/2006 |
| 7102478 | Power line coupling device and method of using the same The coupling device of the present invention includes a housing, a first fastening member attached to said housing and coupled to the power line, a second fastening member attached to the housing and coupled to the power line, an inductor providing an impedance to d... | 09/05/2006 |
| 7078996 | Inductive coupler for power line communications There is provided an inductive coupler for coupling a signal to a conductor. The inductive coupler includes (a) a magnetic core having an aperture through which the conductor is routed, (b) a winding wound around a portion of the magnetic core, where the signal is c... | 07/18/2006 |
| 7078997 | Transformer assembly, and power conversion apparatus and solar power generation apparatus using the same In a transformer assembly formed by using a plurality of transformers each formed by winding a primary coil and a secondary coil around a winding core, one terminal and the other terminal of the primary coil are arranged on opposite sides of the winding core, one te... | 07/18/2006 |
