Class 336/12 - Interconnected windings

Subclass of Class 336 - Inductor devices
Definition: Subject matter wherein the claimed subject matter sets forth
No. of patents: 58
Last issue date: 09/06/2011

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Number	Title	Issue Date
8013703	Multi-parallel magnetic-field cancellation type transformer A multi-parallel magnetic-filed cancellation type transformer includes a plurality of coils which generate magnetic flux during energization and a core having a plurality of magnetic leg portions on which the coils are wound, and bases for fixing the magnetic leg po...	09/06/2011
8013702	Versatile distribution transformer A versatile distribution transformer having an electromagnetic transformer and a power electronic module is provided. A pocket having connectors electrically connected to at least one winding structure of the electromagnetic transformer is mounted above the electrom...	09/06/2011
8009003	Method for powering a magnetic coupler and device for powering an electric dipole A method for powering a magnetic coupler, in which: a) each winding of a first magnetic elementary cell is powered such as to produce a magnetizing flux in a bar of the first cell which is joined with a second cell, the fundamental component of which has an angular ...	08/30/2011
7750782	Nine-phase autotransformer A polygon connected three-phase autotransformer using six windings per phase provides a reduced power rating nine-phase power source suitable for 18-pulse AC to DC power converters. The windings are selected and connected in a manner that controls harmonic currents ...	07/06/2010
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
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
7279851	Systems and methods for fault protection in a balancing transformer An apparatus and methods for balancing current in multiple negative impedance gas discharge lamp loads. Embodiments advantageously include balancing transformer configurations that are relatively cost-effective, reliable, efficient, and good performing. Embodiments ...	10/09/2007
7256677	Transformer having a stacked core with a cruciform leg and a method of making the same The present invention is directed to a transformer having a stacked core, which includes upper and lower yokes and first and second outer legs. The core also includes one or more inner legs. Each of the upper and lower yokes is formed from a stack of plates and has ...	08/14/2007
7253671	Apparatus and method for compensating for clock drift in downhole drilling components A precise downhole clock that compensates for drift includes a prescaler configured to receive electrical pulses from an oscillator. The prescaler is configured to output a series of clock pulses. The prescaler outputs each clock pulse after counting a preloaded num...	08/07/2007
7193496	Magnetic element and power supply A magnetic element and a power supply which can output a plurality of different output pulse signal voltages or different output AC voltages while preventing an increase in the number of parts or an area occupied by parts are provided. The magnetic element includes ...	03/20/2007
7161456	Systems and methods for driving large capacity AC motors A drive system for driving large capacity motors includes a motor and a variable frequency drive which accepts input from a three-phase power source. The drive system includes a step-up transformer, preferably of a high-capacity three-phase type, positioned between ...	01/09/2007
7142081	Multiple three-phase inductor with a common core An electrical inductor assembly has a plurality of three-phase inductors on a common core. Each inductor includes three coils wound around separate legs of the core. Core bridges extend across the legs to provide an inter-leg path for the magnetic flux produced by e...	11/28/2006
7141933	Systems and methods for a transformer configuration for driving multiple gas discharge tubes in parallel An apparatus and methods for balancing current in multiple negative impedance gas discharge lamp loads. Embodiments advantageously include balancing transformer configurations that are relatively cost-effective, reliable, efficient, and good performing. Embodiments ...	11/28/2006
7092267	Auxiliary power generation in a motor transformer A power supply generates alternating current and direct current from a constant-voltage source. A multi-phase pulse width modulation voltage source inverter is connected across the source to output multi-phase alternating current. At least one waveform generator is ...	08/15/2006
7084524	Bi-directional matrix converter with reverse start-up A method for operating a matrix converter that includes converting m phases of a generator into alternating voltage with n phases of a load connected to a network, wherein n	08/01/2006
7061183	Zigzag topology for balancing current among paralleled gas discharge lamps An apparatus and methods for balancing current in multiple negative impedance gas discharge lamp loads. Embodiments advantageously include balancing transformer configurations that are relatively cost-effective, reliable, and efficient. Embodiments include configura...	06/13/2006
7019429	Method of applying a tube member in a stator slot in a rotating electrical machine A method for mounting a tube in a space having a shape corresponding to the shape of the tube. The tube is inserted into the space, pressurized with a hot pressure medium causing the tube to expand until the space is filled, then a cold pressure medium is substitute...	03/28/2006
6940366	Coil filter and method for manufacturing the same The present invention provides a coil filter suitable for surface mounting on an electronic circuit board by automatic mounting and capable of realizing wide band isolation excellent in high-frequency characteristics without requiring consideration for the mutual po...	09/06/2005
6939300	Multiple level transmitter and method of transmitting Transmitters for generating multilevel transmit waveforms for medical diagnostic ultrasound are provided. Voltages from a plurality of sources are superposed or summed. Switches control the amplitude and polarity of the summed voltages so that a transmit waveform ha...	09/06/2005
6912921	Torque detecting device A torque detecting device includes an elastic member disposed between an input shaft and an output shaft of a torque transmitting apparatus, first and second resolvers detecting rotational angles of the elastic member at sides of the input shaft and the output shaft...	07/05/2005
6909352	Endless core for a multiphase transformer and a transformer incorporating same A core for a multi-phase transformer includes a body made of two or more rings having a common central axis. Each ring consists of a strip of magnetic permeable material wound about the central axis. The body is provided with a plurality of radially disposed windows...	06/21/2005
6879232	Wide ratio autotransformer-type current ranging A transformer includes taps by which electrical contact can be made to winding sections of the transformer at locations along its length between its end terminals. A first switch permits contact to be made selectively to a selected one of the taps. An amplifier has ...	04/12/2005
6841847	3-D spiral stacked inductor on semiconductor material A 3-D spiral stacked inductor is provided having a substrate with a plurality of turns in a plurality of levels wherein the number of levels increases from an inner turn to the outer turn of the inductor. First and second connecting portions are respectively connect...	01/11/2005
6806803	Transformer winding An electrical transformer is disclosed. The electrical transformer comprises a central axis, a first modular section, and a second modular section. The first modular section is positioned about the central axis and comprises a first support, a first winding of a con...	10/19/2004
6326877	Transformer coil support structure A winding structure for a transformer has a first support having a central axis, and a second support also having a central axis. The second support is positioned having its central axis generally in-line with the central axis of the first support. The wi...	12/04/2001
6323602	Combination equalizing transformer and ballast choke A ballast circuit includes an equalizer transformer for equalizing current between two or more lamps operated in parallel, combined on one core with a choke. In a 2-lamp embodiment, four windings are provided on one main core. The first and second are clo...	11/27/2001
6208230	Transformer for cycloconverter A transformer for a cycloconverter includes three single-phase transformers connected into a three-phase configuration. Each of the single-phase transformers includes a two-legged core, primary windings wound on at least one of legs of the two-legged core...	03/27/2001
6169674	Transformer, system and method to control harmonic distortion Harmonic distortion in a multiple phase power system is controlled by enabling different phase relationships to be set, and changed, in the field, between the devices being energized and the power source providing the energization. This has particular app...	01/02/2001
5982262	Phase shifting transformer with low zero phase sequence impedance A phase shifting transformer or autotransformer for a three phase power distribution network in which selected outputs have a low zero phase sequence impedance. At least one low zero phase sequence impedance output is fed by a plurality of windings distri...	11/09/1999
5929738	Triple core toroidal transformer A triple core transformer including a coupler connected to a third core between two primary windings. Two sets of twisted pairs are wound around each primary core such that a strand of each pair communicates with primary each core. One strand of each pair...	07/27/1999
5801610	Phase shifting transformer with low zero phase sequence impedance A phase shifting transformer or autotransformer for a three phase power distribution network has a secondary winding including a plurality of windings distributed amongst the three core legs such that on each core leg the number of turns of windings gener...	09/01/1998
5557249	Load balancing transformer A three phase transformer having a pair of additional coupled windings on the secondary side of each phase, with these coupled windings properly connected in series to develop a voltage in phase with a particular secondary voltage but driven from alternat...	09/17/1996
5543771	Phase shifting transformer or autotransformer A phase shifting polygonal transformer or autotransformer for a three phase electrical distribution system is provided, in which the transformer output winding or autotransformer winding is composed solely of three main coils and three auxiliary coils, al...	08/06/1996
5537089	Three phase transformer with reduced harmonic currents A transformer comprising a core, a plurality of primary coils and a plurality of secondary coils, the core having three sections arranged in a generally triangular configuration forming three vertices, the coils being disposed on the core about respective...	07/16/1996
5534837	Orthogonal-field electrically variable magnetic device An electro-magnetic device for use in applications requiring low-profile components. The device includes a magnetic substrate with a scheme of through-holes in association with a first and second winding, plated or wired, integral to the substrate and wou...	07/09/1996
5446311	High-Q inductors in silicon technology without expensive metalization A monolithic high-Q inductor structure is formed with multiple metalization levels in a conventional integrated circuit technology in which inductor turns utilize these multiple levels to reduce the inductor resistance. Inductors with Q values above five ...	08/29/1995
5416458	Power distribution transformer for non-linear loads An electrical power distribution transformer of the delta/wye configuration wherein the wye secondary windings are connected in a zigzag configuration and distributed among the legs of a multi-legged transformer core to achieve substantial attenuation of ...	05/16/1995
5331303	Power transformer for cycloconverters A power transformer for cycloconverters comprises an iron core having three legs, nine positive group windings, nine negative group windings, and nine power supply windings. Three of the positive group windings, three of the negative group windings and th...	07/19/1994
5182535	Summing transformer core for star-delta inverter having a separate secondary winding for each primary winding A summing transformer for a star-delta inverter having a separate secondary winding for each primary winding for use in inverting variable frequency AC power into constant frequency AC power, the transformer comprising a plurality of core sections having ...	01/26/1993
5177460	Summing transformer for star-delta inverter having a single secondary winding for each group of primary windings A summing transformer for a star-delta inverter having a single secondary winding for each group of primary windings for use in inverting variable frequency AC power into constant frequency AC power, the transformer comprising a plurality of core elements...	01/05/1993

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Class 336/12 - Interconnected windings