Coils Of Different Windings Interposed Patents (Class 336/183)
  • Patent number: 11107614
    Abstract: A coil electronic component includes a body, a coil unit disposed in the body and having a multilayer structure. The coil unit includes a first coil pattern forming an upward turn with respect to a bottom surface of the body and a second coil pattern forming a downward turn with respect to the bottom surface of the body. The first and second coil patterns are disposed on at least two layers of the multilayer structure. The component additionally includes a first external electrode and a second external electrode disposed on the bottom surface of the body.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 31, 2021
    Inventors: Soon Kwang Kwon, Jung Ho Cho, Jung Wook Seo, Young Seuck Yoo, Joong Won Park
  • Patent number: 10910140
    Abstract: A matrix transformer particularly suited to large voltage step-down, high current applications achieves increased good current sharing uniformity or air gap and electrical characteristics and reduced or eliminating termination losses, core losses and winding losses with a unitary magnetic core structure featuring sheets of magnetic material and a two-dimensional array of pillars on which windings, oriented in opposite directions on pillars that are adjacent in orthogonal directions, can be formed or placed comprising metallization on or embedded in a printed circuit board (PCB) structure. Magnetic flux density is reduced by at least one-half by dividing the magnetic flux in each pillar into two paths of increased width in the sheets of magnetic material. Magnetic flux density may be further decreased and flux uniformity improved by extending the sheets of magnetic material beyond a periphery defined by the pillar array.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: February 2, 2021
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Chao Fei, Fred C. Lee, Qiang Li
  • Patent number: 10818427
    Abstract: A bobbin assembly for use in a stator assembly for a motor assembly having an axis of rotation is provided. The bobbin assembly includes a conductor coil comprising a radially inner end and a radially outer end. The bobbin assembly also includes a bobbin including a body portion having a first end and a second end, wherein the conductor coil is coupled about the body portion. The bobbin also includes a first flange coupled to the first end, a second flange coupled to the second end, and an extension tab formed on one of the first flange or the second flange. The extension tab extends radially beyond one of the radially inner end or radially outer end of the conductor coil.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 27, 2020
    Inventors: Alan Jacob Manz, Joseph Aaron Henry
  • Patent number: 10742126
    Abstract: Transformation device including a transformer, first electrical components and connections, the transformer including a first winding and a second winding, the first electrical components being connected via the connections between first terminals of the first winding, the first electrical components extending over an integration surface situated between the connections, the integration surface, the connections and a portion of the first winding forming portions of circulation of a first current circulation loop, the transformation device being arranged for a connection current to circulate in the first current circulation loop, each portion of circulation being wider than it is long in the line of circulation of the connection current.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: August 11, 2020
    Assignee: BRIGHTLOOP
    Inventor: Florent Liffran
  • Patent number: 10645811
    Abstract: Methods and apparatus for providing enhanced coupled inductive devices. In one embodiment, an inductive device is disclosed that is suitable in Ethernet applications with data speeds exceeding one (1) Gbps. Specifically, the inductive devices described herein possess a high level of magnetic and capacitive coupling between the wires of the windings. Moreover, the inductive devices described herein are suitable for automated processes, thereby reducing the overall costs associated with their manufacture and use. Furthermore, methods for manufacturing and using these aforementioned inductive devices are also disclosed. For example, the aforementioned inductive devices may readily be incorporated into ICMs thereby replacing, in their entirety or in part, manually wound toroidal transformers.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: May 5, 2020
    Inventors: Thuyen Dinh, Mohammad Saboori, Aurelio Gutierrez, Thomas Rascon
  • Patent number: 10553348
    Abstract: A pulse transformer includes a drum core having a winding core, a first flange provided at one end of the winding core in a first direction, and a second flange provided at the other end of the winding core in the first direction. First, second, third, and fourth terminal electrodes are provided in the first flange, and fifth, sixth, seventh, and eighth terminal electrodes are provided in the second flange. First, second, third, and fourth wires each have one end connected to a different one of the first to fourth terminal electrodes and the other end connected to a different one of the fifth to eighth terminal electrodes. A length of the drum core in the first direction and the second direction, perpendicular to the first direction, are substantially equal to one another, such that a planar shape of a mounting region of the pulse transformer is substantially square.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: February 4, 2020
    Assignee: TDK
    Inventors: Nobuo Takagi, Setu Tsuchida, Tasuku Mikogami
  • Patent number: 10522283
    Abstract: A common mode filter includes a core, and first and second wires wound around the core. Each of the first and second wires includes at least i?1th turn, ith turn, and i+1th turn. The ith turn of the first wire intersects with the ith turn of the second wire without intersecting each of the i?1th and i+1th turns of the second wire.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: December 31, 2019
    Inventors: Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu
  • Patent number: 10347416
    Abstract: Disclosed herein is a coil component that includes: a drum core including a winding core part, a first flange part provided at one end of the winding core part in an axial direction of the winding core part, and a second flange part provided at other end of the winding core part in the axial direction of the winding core part; first, second, third, and fourth terminal electrodes provided on the first flange part; fifth, sixth, and seventh terminal electrodes provided on the second flange part; and first, second, third, and fourth wires wound around the winding core part, wherein one ends of the first to fourth wires are each connected to any one of the first to fourth terminal electrodes, and wherein other ends of the first to fourth wires are each connected to any one of the fifth to seventh terminal electrodes.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: July 9, 2019
    Inventors: Tasuku Mikogami, Nobuo Takagi
  • Patent number: 10153085
    Abstract: A transformer includes a magnetic core, a first winding assembly inductively coupled to the magnetic core, and a second winding assembly inductively coupled to the first winding assembly. The magnetic core includes a winding leg. The first winding assembly includes a plurality of first layers, and the second winding assembly includes a plurality of second layers. The first and second winding assemblies are concentrically wound around the winding leg in an interleaved configuration, where at least one of the plurality of second layers is disposed between two of the plurality of first layers, and at least one of the plurality of first layers is disposed between two of the plurality of second layers.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: December 11, 2018
    Assignee: ABB Schweiz AG
    Inventor: Juan José Gutiérrez Estrada
  • Patent number: 10147531
    Abstract: The present disclosure includes an electrical power transformer that may include a core and a conductor pack. A conductor pack may include a conducting layer disposed around a portion of the core, a first planar insulating layer disposed on a first side of the conducting layer, and a second planar insulating layer disposed on a second side of the conducting layer. A cooling member may be disposed adjacent to the conductor pack. A method of manufacturing an electrical power transformer may include providing a core and providing a plurality of planar conductor packs. The planar conductor packs including a plurality of planar conducting layers and a plurality of planar insulating layers. The method may include inserting a cooling member between insulating layers of adjacent ones of the plurality of planar conductor packs.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: December 4, 2018
    Assignee: Lear Corporation
    Inventors: Rutunj Rai, Venkat Rao Yalamanchili, Parminder Brar, Michael Scott Duco
  • Patent number: 10102966
    Abstract: A stationary induction apparatus includes: an iron core with a shaft portion including a plurality of first electromagnetic steel plates stacked in a stacking direction, the shaft portion having a main surface located at each of both ends of the plurality of first electromagnetic steel plates in the stacking direction; a winding wound around the shaft portion; a first magnetic shield arranged along the main surface, the first magnetic shield being configured by stacking a plurality of second electromagnetic steel plates in a direction orthogonal to the stacking direction of the first electromagnetic steel plates; and a second magnetic shield arranged along the main surface, the second magnetic shield being arranged on each of both sides of the first magnetic shield, the second magnetic shield being configured by stacking a plurality of third electromagnetic steel plates in a direction orthogonal to the stacking direction of the second electromagnetic steel plates.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: October 16, 2018
    Inventors: Yoshinobu Kitagawa, Takamaru Yokomaku, Ryuichi Nishiura
  • Patent number: 10062497
    Abstract: A winding system may include a plurality of metal plates including the same shape and size, such that the plates are stacked, and each of the plurality of metal plates is reversely positioned with respect to a gap pattern in an adjacent one of the plurality of metal plates. The plates are simultaneously brazed together while flow of molten brazing material is constrained by grooves formed on brazing tabs of the plates.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: August 28, 2018
    Inventors: Keming Chen, Evgeni Ganev, William Warr
  • Patent number: 10002707
    Abstract: An induction coil structure for a wireless charger includes at least one first coil, at least one second coil, a first magnetic conductor and a second magnetic conductor. The first coil is disposed in a first layer of an induction coil. The second coil is disposed in a second layer of the induction coil. The first magnetic conductor is located between the first coil and the second coil, wherein a first surface and a second surface of the first magnetic conductor are superposed on the first coil and the second coil, respectively. The second magnetic conductor is superposed on a surface of the second coil that is not superposed on the first magnetic conductor. The first magnetic conductor includes a hole, and a wire for winding the first coil extends from the first layer to the second layer via the hole, to wind the second coil.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: June 19, 2018
    Assignee: Fu Da Tong Technology Co., Ltd.
    Inventors: Ming-Chiu Tsai, Chi-Che Chan
  • Patent number: 9923388
    Abstract: A wireless power transmitter according to an embodiment includes a coil and a capacitor which resonate with a wireless power receiver. The coil includes a plurality of cell groups and a core which connects the cell groups with each other. Each of the cell groups includes a plurality of cells. Each of the cells is configured such that magnetic field generated by currents flowing through the cells are formed in a same direction. Each of the cell groups is adjacent to at least one cell group. Each of the cell groups and the core are configured as one conductive wire.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: March 20, 2018
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Woo Kil Jung, Jung Oh Lee
  • Patent number: 9859048
    Abstract: The sum of the area of a region occupied by a top surface of a first flange portion and the area of a region occupied by a top surface of a second flange portion is ? or larger the area of an imaginary quadrangle defined by two vertices on the side of the outer periphery of the top surface of the first flange portion, and two vertices on the side of the outer periphery of the top surface of the second flange portion.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: January 2, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Akio Igarashi
  • Patent number: 9859801
    Abstract: A bipolar high-voltage network for an aircraft or spacecraft. The network includes at least one DC-DC converter having two unipolar input connections and two bipolar output connections as well as a reference potential connection, at least two fuel cell stacks which are coupled in series between the two unipolar input connections, and at least two discharge diodes, each connected in parallel with the output connections of one of the at least two fuel cell stacks. The DC-DC converter is operable selectively in a step-up converter mode of operation or a step-down converter mode of operation, as a function of an input voltage between the unipolar input connections.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: January 2, 2018
    Assignee: Airbus Operations GmbH
    Inventors: Joerg Wangemann, Hauke-Peer Luedders, Alexander Kaiser
  • Patent number: 9728321
    Abstract: The proposed transformer includes windings made of a multi-layer ferromagnetic foil tape having an even number m of ferromagnetic layers, coated by interlayer insulation. The winding's upper ends are connected through a first yoke, the winding's bottom ends are connected through a second yoke. Each winding is wrapped by a short-circuited coil, and contains a component for transposition of layers connected in a break at the middle of tape. The insulation's thickness is determined by a ratio of di>un2, pic*/(En2, pic·m), where un2, pic is a maximum peak voltage between adjacent winding turns, En2, pic is a maximum electric field strength of the insulation. The insulation uses either ferroelectric material Fe2O3, or multi-layered material with an intensive antiferromagnetic interaction formed as a plurality of pairs of alternating layers of Cu—Fe with a ratio of thicknesses of Cu and Fe ranged from 5:1 to 10:1.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: August 8, 2017
    Inventors: Vladimir Viktorovich Kazakov, Oleg Vladimirovich Kazakov, Khamis Magsumovich Makhianov
  • Patent number: 9666363
    Abstract: A surface-mount inductor having a coil formed by winding a wire and a molded body for accommodating the coil, wherein the coil includes: a pair of first rolls of wire of a rectangular section which are wound in a two-roll arrangement, both ends of the wire being positioned at their outermost turns; and a pair of second rolls wound in positions adjacent to and each on opposite sides of the first rolls to partially overlap the first rolls, whereby the ends of the wire are brought out from the outermost turns of the second rolls as lead ends, with winding axis of the coil being parallel with the molded body and the lead ends extending over the surface of the mounting face.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: May 30, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Kazuhisa Kitamura
  • Patent number: 9601259
    Abstract: An electronic component has a laminate including a plurality of laminated insulator layers, the laminate having a top surface and a mounting surface positioned in a first direction perpendicular to a direction of lamination. The direction of lamination is a direction in which the plurality of the insulator layers are laminated. First and second external electrodes are positioned on the mounting surface rather than on the top surface. The first and second external electrodes including first and second Ni-plating films and first and second Sn-plating films provided thereon, respectively. A first total thickness of the first Ni-plating film and the first Sn-plating film and/or a second total thickness of the second Ni-plating film and the second Sn-plating film are/is 11.6 ?m or more, respectively. The first and/or second Ni-plating films are/is 1.37 times or more as thick as the first and/or second Sn-plating films, respectively.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: March 21, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takeru Ozawa, Kaori Takezawa
  • Patent number: 9419538
    Abstract: A power converter has a transformer having three primary windings configured to receive respective phases of a three-phase alternating current (AC) input signal in a delta configuration and three secondary windings, each split into two portions, wherein the portions are coupled together in a regular hexagon. The power converter includes a rectifier having a first rectifier path coupled between taps of the secondary windings and a positive output of the power converter and a second rectifier path coupled between taps of the secondary windings and a negative output. One of the secondary windings may be reversed with respect to the other secondary windings. The primary windings may be split with a corresponding secondary winding sandwiched between portions of the primary. One of the paths may have a different inductance than the other path.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: August 16, 2016
    Assignee: Crane Electronics, Inc.
    Inventors: Kaz Furmanczyk, Randy Stephenson
  • Patent number: 9228823
    Abstract: This inductive position sensor includes: a primary winding, and at least two secondary windings (4, 6) each constituted by several turns (8) produced on two layers of a printed circuit board. A secondary winding has turns (8) each having substantially the same shape, aligned in a direction referred to as longitudinal, each time with an offset between them. The turns (8) each have a first globally concave part (12) disposed on one layer of the printed circuit board and a second globally concave part (14) disposed on the other layer of the printed circuit board, the first part of a turn is connected to the second part of the same turn by a first via (36a) passing through the printed circuit board, the first part of a turn is connected to the second part of an adjacent turn by a second via (36b) passing through the printed circuit board.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: January 5, 2016
    Inventors: Alain Fontanet, Jean-Louis Roux, Olivier Gerardiere
  • Patent number: 9136054
    Abstract: A transformer apparatus provides a primary winding and a secondary winding. The primary winding is divided into multiple primary winding layers. Each primary winding layer includes a number of primary layer turns. The secondary winding includes several secondary winding layers. In some embodiments, the transformer includes alternating primary and secondary winding layers wound around a bobbin structure. At least one secondary winding layer is positioned adjacent a primary winding layer. In some embodiments, the number of primary layer turns in each primary winding layer is equal to the total number of primary winding turns divided by the number of primary winding layers. A method of winding a transformer is also provided.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: September 15, 2015
    Assignee: Universal Lighting Technologies, Inc.
    Inventors: Wei Xiong, Donald Folker, Christopher Radzinski
  • Patent number: 8830693
    Abstract: A planar transformer assembly, for use in charging capacitors of an ICD, includes windings arranged to minimize voltage across intervening dielectric layers. Each secondary winding of a preferred plurality of secondary windings is arranged relative to a primary winding, in a hierarchical fashion, such that the DC voltage, with respect to ground, of a first secondary winding, of the plurality of secondary windings, is lower than that of a second secondary winding, with respect to ground, wherein the first secondary winding is in closest proximity to the primary winding. The primary winding and each secondary winding are preferably formed on a corresponding plurality of dielectric layers.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: September 9, 2014
    Assignee: Medtronic, Inc.
    Inventor: Mark R. Boone
  • Patent number: 8665052
    Abstract: A transformer-based circuit has at least a first port and a plurality of second ports. The transformer-based circuit includes a first winding conductor and a plurality of second winding conductors. The first winding conductor is electrically connected to the first port, and has a plurality of sectors connected in series to thereby form a plurality of loops, where the loops are arranged in a concentric-like fashion. The second winding conductors are magnetically coupled to the first winding conductor; besides, the second winding conductors are electrically connected to the second ports, respectively. Overall layout patterns of the second winding conductors are identical to each other. The first winding conductor acts as one of a primary winding conductor and a secondary winding conductor, and each of the second winding conductors acts as the other of the primary winding conductor and the secondary winding conductor.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: March 4, 2014
    Assignee: Mediatek Inc.
    Inventor: Jie-Wei Lai
  • Patent number: 8502631
    Abstract: A line reactor is presented having a skewed core structure with three horizontally non-coplanar vertical legs and top and bottom laminated, interleaved yoke structures with corresponding horizontally non-coplanar yoke ends.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: August 6, 2013
    Assignee: Ajax Tocco Magnethermic Corporation
    Inventors: David Cavender, William Martin
  • Patent number: 8354910
    Abstract: A coil block and an electronic device using the same are provided. The coil block includes a first coil, a second coil, a core having an intermediate layer for separating the first coil and the second coil from each other, and a shield for shielding the first coil, the second coil, and the intermediate layer, wherein the first coil and the second coil have the same winding direction. According to the coil block and the electronic device, the filtering can be performed without any inductance offset even if the PWM signal having the inversed phase or the same phase is inputted. Also, since two windings can be wound on to one core using a common coil, the cost and the size of the coil block can be reduced.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: January 15, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyu-eun Park, Dae-kyoung Noh, Sung-woo Kim
  • Patent number: 8314674
    Abstract: An electrical transformer with unidirectional flux compensation is provided. The transformer includes a soft magnetic core on which a primary winding arrangement, a secondary winding arrangement, and a compensation winding arrangement are arranged. The compensation winding arrangement is connected to a current control device which feeds a compensation current into the compensation winding arrangement using a control signal. A magnetic field measuring device measures the magnetic field in the core of the transformer or the stray magnetic field that closes outside the core via an air path and provides the control signal.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: November 20, 2012
    Assignee: Siemens AG Österreich
    Inventors: Peter Hamberger, Albert Leikermoser
  • Patent number: 8232857
    Abstract: Embodiments of apparatuses, systems and methods relating to a flux-coupled transformer for power amplifier output matching are disclosed. Other embodiments may be described and claimed.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: July 31, 2012
    Assignee: TriQuint Semiconductor, Inc.
    Inventors: Peter V. Wright, Kenneth W. Mays
  • Patent number: 8223512
    Abstract: A power converter includes a small-sized inductor connected to an AC voltage input line for power factor correction and a filter for suppressing conduction noise. The inductor is connected to a rectifier and comprises first and second windings and that are wound on a common magnetic core and loosely coupled with each other. A leakage inductance component of the inductor functions as an energy storage element in a main conversion operation and an excitation inductance component of the inductor functions as a noise reduction element for suppressing an conduction noise caused by on-off operation of a switching element.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: July 17, 2012
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Michiya Yamada, Yukihiro Nishikawa
  • Publication number: 20120176214
    Abstract: An interleaved flatwire construction for a flatwire planar transformer is provided. The interleaved flatwire construction includes a first winding wire that includes a first end, a second end and a plurality of first ring portions. The interleaved flatwire construction also includes a second winding wire that includes a first end, a second end and a plurality of second ring portions. A portion of the plurality of first ring portions and a portion of the plurality of second ring portions are interleaved with each other.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 12, 2012
    Inventor: Ching Chieh HSIAO
  • Publication number: 20120139640
    Abstract: A bond wire transformer comprises a plurality of primary bond wires coupled in parallel; and a plurality of secondary bond wires coupled in parallel, each secondary bond wire being spaced apart from and oriented relative to a corresponding primary bond wire so as to achieve a desired mutual inductance between the corresponding primary and secondary bond wires, thereby providing magnetic coupling between the primary and secondary bond wires.
    Type: Application
    Filed: December 2, 2011
    Publication date: June 7, 2012
    Applicant: NXP B.V.
    Inventors: David Angel Calvillo Cortes, Leo C. N. De Vreede, Mark Pieter van der Heijden
  • Patent number: 8085122
    Abstract: A high voltage step-up power transformer includes at least one module which defines a lower voltage primary side and a higher voltage secondary side and which includes at least one primary winding and at least one secondary winding, wound concentrically around a ferromagnetic core body, the primary winding(s) being situated outwardly, and at least one shielding and/or insulating surface structure being arranged between the primary and secondary windings. The transformer (1) is characterized in that the outer primary winding (2) or winding parts is (are) made of at least one insulated high voltage cable and in that the at least one conductive intermediate surface structure (5) and/or the core body (4) are set at a referential potential which is a fraction of the output voltage or potential difference on the secondary side.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: December 27, 2011
    Assignee: Bruker Biospin SA
    Inventor: Alfred Niess
  • Patent number: 7999648
    Abstract: A wire-wound coil has a characteristic impedance that can be flexibly adjusted and can be prevented from varying undesirably. In the coil of the present invention, a primary wire part 18A and a secondary wire part 18B are wound around the surface of a core portion 14 so as to be separated from each other by a fixed distance. At the same time, at least one portion the secondary wire part 18B in a prior turn section 19X and at least one portion of the primary wire part 18A in a subsequent turn section 19Y are in close contact with each other, wherein the wire parts 18A and 18B are wound in different turns and are adjacent to each other on the same surface of the core portion 14. A method for manufacturing the wire-wound coil is also disclosed.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: August 16, 2011
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Keigo Nakatani, Yoshie Nishikawa
  • Patent number: 7990246
    Abstract: A pulse transformer arrangement (100) is built from an uncut pulse transformer core (110) and at least one foil winding (120-A, 120-B) (each) comprising multiple insulated conducting strips arranged around the core and ending in foil winding terminals to form multiple independent primary windings. This new design principle has several advantages. Making the winding(s) of foil eliminates the need to cut the core, because of the ease of insertion of the foil winding(s) onto the core. The work to set up a plurality of primary windings is significantly reduced. In addition to the elimination of the costs for cutting the core, this also brings the further advantages of reduced DC reset current, reduced risk for electrical shorts and avoidance of excessive losses due to potential high frequency AC resistance problems.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: August 2, 2011
    Assignee: Scandinova Systems AB
    Inventors: Mikael Rolf Lindholm, Bengt Anderberg
  • Patent number: 7973633
    Abstract: Lower surface terminals are disposed at the lower surface of a magnetic substrate. An upper surface electrode is disposed at the upper surface of the magnetic substrate. A control circuit, an input capacitor, and an output capacitor are mounted on the upper surface electrode. The control circuit contains a switching element. A smoothing choke is disposed inside the magnetic substrate. The connection wiring of connecting the upper surface electrode and at least one of the input terminal, the output terminal, and the ground terminal is constructed using an inner conductor passing through the inside of the magnetic substrate, and the connection wiring forms an inductor.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: July 5, 2011
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Noma, Nobuo Ikemoto, Yoshihiko Nishizawa
  • Patent number: 7965164
    Abstract: In accordance with the present invention, a multi-output transformer includes a primary bobbin provided with one primary winding unit with one input terminal and one ground terminal; a secondary bobbin provided with n(n: positive integer) number of secondary winding units with two output terminals respectively; a primary coil wound around the one primary winding unit; secondary coils wound around each of the n secondary winding units; and a pair of cores inserted into insertion holes formed inside the primary bobbin and the secondary bobbin respectively to separate the primary bobbin and the secondary bobbin.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: June 21, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jeong Hyun Park, Jong Rak Kim
  • Patent number: 7956714
    Abstract: Primary (4, 8) and secondary (10) windings are subjected to a significant heat stress during operation of a high voltage transformer. The present invention describes a high voltage transformer which is believed to have good temperature properties. This transformer may have a planar primary winding and a Litz secondary winding. The planar primary winding may abut against a planar face of the core (2) therefore allowing for a good heat exchange between these two elements. The Litz secondary winding and the planar primary winding may be cooled by means of a cooling medium.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: June 7, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Bernd Ackermann, Christoph Loef
  • Patent number: 7894212
    Abstract: A switching power supply device includes a first series circuit of first and second switching elements connected in parallel with a DC power supply. An isolation transformer has primary and secondary windings and first and second auxiliary windings, a first layer including the primary windings between a second layer of the two auxiliary windings, and a third layer of the secondary windings. A capacitor in series with the primary windings defines a second series circuit in parallel with the second switching element. A rectifying and smoothing circuit includes a rectifying diode and a smoothing capacitor, connected to the secondary windings. First and second control circuits turn on and off the first and second switching elements based on voltages generated in the two auxiliary windings, to obtain a DC output from the rectifying and smoothing circuit, enabling an adequate auxiliary windings voltage and stable switching operation including stable zero-voltage turn-on.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: February 22, 2011
    Assignee: Fuji Electric Systems Co., Ltd.
    Inventor: Yukihiro Nishikawa
  • Patent number: 7859381
    Abstract: An autotransformer for use in low frequency, high power applications that uses a stack of printed wire boards constructed of a top, inner, and bottom layer including electrical trace windings circumventing the transformer core and formed in the inner layer for direct thermal contact with a heat sink interface providing a uniform and consistent heat path down to the heat sink plate. The autotransformer further includes a board to board connection employing solder cups to electrically connect between predetermined printed wire board traces. The printed wire board autotransformer also may use a non-planar interface for thermal interface with a non-planar heat sink plate surface.
    Type: Grant
    Filed: July 5, 2008
    Date of Patent: December 28, 2010
    Assignee: Honeywell International Inc.
    Inventors: Keming Chen, Mike Kirkland, Michael A. Quan
  • Patent number: 7825764
    Abstract: Disclosed is a signal transmitter including a primary winding, a first and at least one second secondary winding which are arranged at a distance from the primary winding in a first direction and are in each case inductively coupled to the primary winding, and each of which has at least two series-connected winding sections, with the at least two winding sections of each of the first and second secondary windings being arranged in at least two different winding levels, and a signal transmission apparatus having a signal transmitter such as this.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: November 2, 2010
    Assignee: Infineon Technologies Austria AG
    Inventor: Martin Feldtkeller
  • Publication number: 20080309445
    Abstract: A transformer is provided with first and second windings that constitute a primary winding, third and fourth windings that constitute a secondary winding, and a magnetic core on which the first through fourth windings are wound. A first distance in a radial direction of a wire between the first winding and the third winding, a second distance in the radial direction of the wire between the first winding and the fourth winding, a third distance in the radial direction of the wire between the second winding and the third winding, and a fourth distance in the radial direction of the wire between the second winding and the fourth winding are substantially equal in the same turn.
    Type: Application
    Filed: June 12, 2008
    Publication date: December 18, 2008
    Applicant: TDK Corporation
    Inventors: Katsuyuki SUZUKI, Hiroshi Suzuki
  • Patent number: 7459863
    Abstract: A transformer for driving multiple lamps includes a core, a primary winding set, a secondary winding set and a balancing winding set. The primary winding set winds around the core and includes a first primary coil. The secondary winding set winds around the core and includes a first secondary coil. The balancing winding set winds around the core and includes a first balancing coil and a second balancing coil which wind around the core in a combinative way. The primary winding set, the secondary winding set and the balancing winding set have the same magnetic-flux loop in the core.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: December 2, 2008
    Assignee: Darfon Electronics Corp.
    Inventors: Ching-Fu Hsueh, Cheng-Hsien Chien, Wan-Chin Hsu
  • Patent number: 7327207
    Abstract: A lamination type electronic component includes spiral conductor patterns which are substantially quadrilateral and are electrically connected to each other through a via hole formed in a ceramic insulating layer so as to constitute a coil. The conductor patterns are arranged so that the center in the width direction of the sides extending in the Y-axis direction of the one conductor pattern may be positioned at the inside edges of the sides extending in the Y-axis direction of the other conductor pattern.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: February 5, 2008
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Keiji Asakawa
  • Patent number: 7304867
    Abstract: A DC-DC converter of multi-output type is provided wherein a primary winding 5a is wound around core halves 5g, 5h of a transformer 5 between first and second secondary windings 5b, 5c of transformer 5 also concentrically wound around core halves 5g, 5h to form an electromagnetic sparse coupling between first and second secondary windings 5b, 5c. When on-off operation of first and second primary MOS-FETs 2, 3 generates first and second DC outputs VO1, VO2, the electromagnetic sparse coupling can reduce, attenuate or relax serge voltage induced on first secondary winding 5b.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: December 4, 2007
    Assignee: Sanken Electric Co., Ltd.
    Inventor: Hiroshi Usui
  • Patent number: 7154364
    Abstract: An electric machine comprises a core (10) of magnetic material and a first insulating layer (14) of a solid electrically insulating material surrounding the core. A high-voltage winding (17) in the form of an electric conductor is wound around a first part (16) of the first insulating layer and a field-equalizing member (19) is arranged around a second part (18) of the first insulation layer. Further, a second insulating layer (20) of a solid electrically insulating material surrounds the high-voltage winding and the field-equalizing member. The field-equalizing member comprises at least one first sub-member in the form of a winding (27, 28, 37, 38), and an electric cable conductor (31) is intended to be connected to the high-voltage winding at the field-equalizing member.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: December 26, 2006
    Assignee: ABB AB
    Inventor: Stefan Valdemarsson
  • Patent number: 7098764
    Abstract: 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 arranged inside the twisted conductor and is electrically separated from the twisted conductor, the main conductor consists of two twisted conductors (1, 2) that are electrically separated from each other. The control conductor consists of several flat copper conductors (7) covered by an insulating sheath (7a), and the copper conductors (7) are fastened to one of the twisted conductors (1, 2).
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: August 29, 2006
    Assignee: Nexans
    Inventors: Wilhelm Schaumburg, Joachim Runge
  • Patent number: 6954131
    Abstract: 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 rectangular cross-section, is wound about the vertical portion of the T-core thereby forming a coil. The comb-like separators electrically isolate the wire from adjacent windings and the T-core. The L-cores are attached to the T-core such that they flank two sides of the coil. A plurality of taps is formed on a side of the coil that is not flanked by one of the L-cores. The taps are formed by extending individual windings further from the T-core than other common windings. Preferably, a hole is formed through the rectangular wire at the taps to provide a secure electrical connection to the wire.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: October 11, 2005
    Assignee: Illinois Tool Works Inc.
    Inventor: Randall J. DuVal
  • Patent number: 6867674
    Abstract: A power transformer having at least one high voltage winding and one low voltage winding. Each of the windings includes at least one current-carrying conductor, a first layer having semiconducting properties provided around said conductor, a solid insulating layer provided around said first layer, and a second layer having semiconducting properties provided around said insulating layer. The windings are intermixed such that turns of the high voltage winding are mixed with turns of the low voltage winding.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: March 15, 2005
    Assignee: Asea Brown Boveri AB
    Inventors: Thorsten Schutte, Par Holmberg, Jan Brangefalt, Christian Sasse, Peter Carstensen
  • Patent number: 6853284
    Abstract: A high-voltage transformer includes a bobbin that holds a core at its center. This bobbin has eight winding grooves arrayed along the central axis of the core. A primary coil is wound around each of two outermost winding grooves with a predetermined number of turns. A secondary coil is wound around the six winding grooves near the center with a predetermined number of turns, which are distributed among these winding grooves. The cathode of a diode is connected through a terminal to one end of the secondary coil where the winding starts, while the anode of another diode is connected through another terminal to the other end of the secondary coil where winding ends.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: February 8, 2005
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tadao Nagai, Yasunobu Saida, Toshihiko Suzuki
  • Patent number: 6751847
    Abstract: A detection coil for use in nuclear resonance magnetic (NMR) spectroscopy and a method of manufacture thereof. At least two film layers of material are deposited on an outer surface of a cylindrical tube of dielectric material. The layers are patterned to form a solenoid on the tube. At least one of the deposited materials is a conductor.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: June 22, 2004
    Assignee: FSU Research Foundation, Inc.
    Inventors: William W. Brey, Susan D. Allen