Coil And Core Patents (Class 336/221)
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Patent number: 9424976Abstract: A reactor includes a core made of a magnetic material; a resin mold that encloses the core; a coil that is wound around the core through the resin mold; a plurality of fasteners located on the resin mold; and a supporting member that is secured to the resin mold through the fasteners. At least one of the plurality of fasteners is a flexible fastener.Type: GrantFiled: December 11, 2013Date of Patent: August 23, 2016Assignee: TAMURA CORPORATIONInventor: Kotaro Suzuki
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Patent number: 9369060Abstract: A power generation system includes an input to receive a low-voltage alternating current and a number N of voltage-conversion modules coupled to the input, each electrically connected in series. Each voltage-conversion module includes a transformer configured to convert the low-voltage alternating current into a high-voltage alternating current. Each voltage-conversion module includes a multiplier configured to convert the high-voltage alternating current from the transformer into a high-voltage direct current. The multiplier includes a positive multiplier part and a negative multiplier part. The positive multiplier part and the negative multiplier part each includes a pair of input terminals connected in parallel with the transform and at least one multiplier stage comprising a single diode and a capacitor assembly. The number N is an even number between 4 and 24.Type: GrantFiled: January 4, 2013Date of Patent: June 14, 2016Assignee: GENERAL ELECTRIC COMPANYInventors: Saijun Mao, Denis Perrillat-Amede, Philippe Ernest, Niranjan Kumar, Xu Chu
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Patent number: 9167682Abstract: An electronic component includes a circuit board that includes a ground terminal connected to a ground potential, a coil component that is assembled on the circuit board, the coil component includes a T-shaped core and an air-core coil, a ground connection electrode that is assembled on the circuit board next to the coil component and that is connected to the ground terminal, and a mixture of a metal composite magnetic material and a resin that is formed on the circuit board and that covers the coil component and the ground connection electrode as a package. A part of the ground connection electrode is exposed outside the mixture.Type: GrantFiled: August 21, 2013Date of Patent: October 20, 2015Assignee: Sumida CorporationInventors: Mitsugu Kawarai, Douglas James Malcolm
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Publication number: 20150145632Abstract: A coil unit in which impact resistance is ensured and that has a magnetic body for heating prevention. The coil unit (the power receiving coil unit) includes a winding wire (the winding wire portion) and a magnetic body, wherein in the magnetic body, a plurality of individual pieces with two principle surfaces opposing in a thickness direction are disposed in rows and columns in a direction substantially orthogonal to the thickness direction, and the two principle surfaces are in a polygonal shape and all interior angles forming a polygon are obtuse angles (except for a right angle).Type: ApplicationFiled: November 26, 2014Publication date: May 28, 2015Inventors: Narutoshi FUKUZAWA, Toshinori MATSUURA
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Patent number: 9041500Abstract: A magnetic core includes a first core having a predetermined magnetic permeability and a second core formed of the same material as the first core. The second core forms a closed magnetic circuit together with the first core. The second core is configured to radiate heat through a heat radiating unit. At least one of the first core and the second core is configured to be wound with a coil. The magnetic core includes a third core that is arranged between the first core and the second core and has a lower magnetic permeability than the first core.Type: GrantFiled: June 4, 2012Date of Patent: May 26, 2015Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Sergey Moiseev
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Patent number: 9035736Abstract: A magnetic device is provided. The magnetic device includes a magnetic core and a conductive winding inductively coupled to the magnetic core. The conductive winding includes a first terminal segment, a second terminal segment, and an inductive segment electrically coupled in series therebetween. The first terminal segment includes a current sensing element.Type: GrantFiled: June 16, 2014Date of Patent: May 19, 2015Assignee: General Electric CompanyInventors: Joao Luiz Andres, John F. Steel, Robert James Catalano, Loc Ngo
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Patent number: 9030284Abstract: A combined structure of hollow bobbin and conductive sheet for a transformer includes a hollow bobbin and at least one conductive sheet. The hollow bobbin includes an outer surface and at least one positioning structure formed on the outer surface. The conductive sheet is fit on the outer surface of the hollow bobbin and includes a main body and at least one engaging structure. The main body has a hollow portion, making the main body to have an inner circumference. The engaging structure is formed on the inner circumference of the main body and is engaged with the positioning structure of the hollow bobbin. The transformer includes at least one winding disposed on the outer surface of the hollow bobbin and abutting against the conductive sheet.Type: GrantFiled: January 14, 2014Date of Patent: May 12, 2015Assignee: Delta Electronics, Inc.Inventors: Zhi-Liang Zhang, Ching-Hsien Teng, Yu-Liang Hung
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Publication number: 20150123761Abstract: A rod-shaped magnetic core element, having a first end with a spherical or cylindrical recess or a spherical or cylindrical connecting protrusion, and a second end with a spherical or cylindrical recess or a spherical or cylindrical connecting protrusion so that a bent connection of at least two magnetic core elements is variably adjustable. Magnetic core elements comprising spherical or cylindrical magnetic core ends of this type allow a nearly gap-free construction with little magnetic leakage due to slightly larger end surfaces in comparison with ferrite rods having beveled plane end section surfaces. The enlarged end surface of the spherical surface advantageously allows a more stable connection of individual magnetic core elements without adhesive bonding. This allows the construction of flexible, multiple-member and inexpensive rod core coils and antennae.Type: ApplicationFiled: November 3, 2014Publication date: May 7, 2015Inventor: Johann WINKLER
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Patent number: 9024715Abstract: In a power converting transformer, an I-core has a pair of fixing grooves provided at centers on opposite side surfaces of the I-core in a y-direction in an xyz orthogonal coordinate system, the fixing grooves extending through the I-core in the z-direction, and an E-core has a pair of fixing recess portions provided at x-direction centers of the y-direction opposite end portions of the base portion on a surface opposite from a surface of the base portion facing the I-core. The I-core and the E-core are pressed and fixed to each other by a fixing spring wrapped around the I-core and the E-core through the fixing grooves and the fixing recess portions. An x-direction length of the E-core is shorter than an x-direction length of the I-core, and a y-direction length of the E-core is shorter than or equal to a y-direction distance between the fixing grooves of the I-core.Type: GrantFiled: April 11, 2013Date of Patent: May 5, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Masahiro Nishikawa, Tomoyuki Nakano
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Patent number: 9013263Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.Type: GrantFiled: August 26, 2009Date of Patent: April 21, 2015Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Kenji Nakanoue, Kazuyuki Fukui, Hidemasa Yamaguchi, Kouhei Satou, Tatsuhito Azegami, Makoto Shinohara, Toshiaki Takahashi, Tooru Honma, Masanao Kuwabara, Toshiki Shirahata, Yuuji Satou, Manabu Dohi, Ryosuke Mikoshiba, Hiroyuki Endou
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Publication number: 20150102885Abstract: The present invention provides a transformer including a coiling frame, an iron core, and a fastener. There is a wire twining round the coiling frame, which has a through hole inside thereof. The iron core extends through the through hole and forms a magnet loop. The fastener comprises a first component and a second component. The first component connects with the second component in a horizontal direction thereby surrounding and fixing the coiling frame and the iron core. One advantage of the present invention is that the fastener fixing the coiling frame and the iron core has a split structure. The fastener is assembled with the coiling frame directly, and a combination of the coiling frame and the iron core need not be vertically assembled with the fastener so as to make the transformer assembling easier and avoid the size of the transformer troublesome.Type: ApplicationFiled: August 12, 2014Publication date: April 16, 2015Inventors: Xiao-Xia YUAN, Zhi-Liang ZHANG, Shao-Dong ZHANG
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Patent number: 9007159Abstract: A coil-type electronic component having a coil inside or on the surface of a base material is characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains inter-bonded via oxide layers, multiple crystal grains are present in each soft magnetic alloy grain, and the oxide layers preferably have a two-layer structure whose outer layer is thicker than the inner layer.Type: GrantFiled: December 7, 2012Date of Patent: April 14, 2015Assignee: Taiyo Yuden Co., Ltd.Inventors: Masahiro Hachiya, Atsushi Tanada, Kenji Otake, Kiyoshi Tanaka, Tetsuyuki Suzuki
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Publication number: 20150097649Abstract: A novel ferromagnetic composition is provided. The reagent includes at least one zero-valent atom, whether metal, metalloid, or non-metal, in complex with at least one hydride molecule. The composition need not contain any inherently ferromagnetic elements and can be much lighter than conventional iron or other metal-based ferromagnetic materials. Core-solenoid devices having ferromagnetic cores which employ the novel ferromagnetic composition are additionally provided. Examples such as electric motors or generators for use in hybrid or all-electric automobiles are included.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Inventor: Michael Paul Rowe
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Patent number: 8994488Abstract: A transformer power splitter has a plurality of output ports and an input port. The transformer power splitter includes a plurality of primary winding conductors and a plurality of secondary winding conductors. The secondary winding conductors are electrically connected to the output ports respectively. Each of the secondary winding conductors is electrically connected between a positive terminal and a negative terminal of a corresponding output port. The primary winding conductors are magnetically coupled to the secondary winding conductors respectively. The primary winding conductors are configured in a topology including series and parallel connections between a positive terminal and a negative terminal of the input port.Type: GrantFiled: July 7, 2010Date of Patent: March 31, 2015Assignee: Mediatek Inc.Inventor: Jie-Wei Lai
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Publication number: 20150085532Abstract: A reactor device includes: a magnetic core defining a predetermined axis; a first coil wound around the predetermined axis; and a second coil wound around the predetermined axis and placed opposed to the first coil, wherein: a first lead part and a second lead part formed in both ends of the first coil are placed on that side of the first coil which is opposed to the second coil.Type: ApplicationFiled: September 18, 2014Publication date: March 26, 2015Inventor: Fumiki Tanahashi
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Patent number: 8988182Abstract: Transformers and methods of constructing transformers are disclosed. In one embodiment, a method of constructing a transformer includes wrapping a first primary winding around a core, wrapping a secondary winding around the core, and wrapping a second primary winding around the core. The first primary winding traverses substantially an entire circumference of the core in a first circumferential direction. The secondary winding includes a first half and a second half. The first half traverses substantially the entire circumference of the core in the first circumferential direction, and the second half traverses substantially the entire circumference of the core in a second circumferential direction opposite the first circumferential direction. The second primary winding traverses substantially the entire circumference of the core in the second circumferential direction.Type: GrantFiled: March 21, 2012Date of Patent: March 24, 2015Assignee: SunEdison, Inc.Inventor: Gregory Allen Kern
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Patent number: 8975998Abstract: A planar magnetic component and a method for manufacturing the same are provided. The planar magnetic component includes a substrate, a first conductor layer and a magnetic structure; wherein the first conductor layer is disposed on a first surface of the substrate, and the magnetic structure penetrates the first conductor layer and is embedded in the substrate. The magnetic structure includes a ferromagnetic material layer and at least one first hard protective layer disposed on a first surface of the ferromagnetic material layer, which could prevent the ferromagnetic material layer from breaking in a pressing process.Type: GrantFiled: December 2, 2013Date of Patent: March 10, 2015Assignee: Shanghai Zhuo Kai Electronic Technology Co., Ltd.Inventor: Yao-Long Wen
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Publication number: 20150061817Abstract: A coil component may include: a base board having an accommodation portion disposed therein and having conductive patterns disposed within the accommodation portion; an annular core disposed in the accommodation portion; and a laminated board laminated on the base board and having conductive patterns disposed on one surface thereof. The conductive patterns of the laminated board are connected to the conductive patterns of the base board to form a coil.Type: ApplicationFiled: May 28, 2014Publication date: March 5, 2015Inventors: Young Min LEE, Geun Young PARK, Sang Yun LEE, Jae Sun WON, Suk Hyeon CHO, Tae Won HEO
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Patent number: 8970339Abstract: A magnetic core is provided. The magnetic core includes a magnetic base and a magnetic plate. The magnetic base includes a first U-core, a second U-core, and a spacing member. The first U-core has a relatively high magnetic permeability, and includes a first surface having a first winding channel defined therein. The second U-core has a relatively high magnetic permeability, and includes a second surface having a second winding channel defined therein. The first and second surfaces are substantially coplanar with one another. The spacing member is connected to the first and second U-cores such that a gap having a relatively low magnetic permeability is formed between the first and second U-cores. The magnetic plate is coupled to the magnetic base such that the magnetic plate substantially covers the first and second surfaces.Type: GrantFiled: March 15, 2013Date of Patent: March 3, 2015Assignee: General Electric CompanyInventor: Robert James Catalano
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Patent number: 8963676Abstract: A configurable transformer module includes a primary printed circuit board, one or more secondary printed circuit boards, and one or more interface connectors. The primary PCB has planar primary windings formed thereon and openings for accommodating a planar transformer core. Each of the one or more secondary PCB has planar secondary windings and an opening for accommodating the planar transformer core. Some of the secondary PCB has mating terminals formed thereon. The planar secondary windings on a respective secondary printed circuit board are configured by electrical connections provided at a respective interface connector to realize a given transformer turns ratio between the respective secondary printed circuit board and the primary printed circuit board.Type: GrantFiled: March 12, 2013Date of Patent: February 24, 2015Assignee: XP Power LimitedInventor: Kevin P. Hoang
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Publication number: 20150042440Abstract: The inductance device (4) includes: a magnetic metal substrate (2) comprising a metallic substrate (10) having first permeability, a first insulating layer (16a) disposed in the metallic substrate (10), and a first metallic wiring layer (22) having second permeability and disposed on the first insulating layer (16a); a first gap layer (24) disposed on the front side surface of the magnetic metal substrate (2); and a first magnetic flux generation layer (26) disposed on the first gap layer (24). There are provide a thin magnetic metal substrate adaptable to the large current use and advantageous in the high frequency characteristics; and an inductance device to which such a magnetic metal substrate are applied, wherein the inductance device is adaptable to smaller mounting area, larger inductance values, and large current use and advantageous in high frequency characteristics.Type: ApplicationFiled: August 24, 2012Publication date: February 12, 2015Applicant: ROHM CO., LTD.Inventors: Naoaki Tsurumi, Keisuke Fukae
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Patent number: 8952776Abstract: A multi-phase coupled inductor includes a powder core material magnetic core and first, second, third, and fourth terminals. The coupled inductor further includes a first winding at least partially embedded in the core and a second winding at least partially embedded in the core. The first winding is electrically coupled between the first and second terminals, and the second winding electrically is coupled between the third and fourth terminals. The second winding is at least partially physically separated from the first winding within the magnetic core. The multi-phase coupled inductor is, for example, used in a power supply.Type: GrantFiled: May 13, 2011Date of Patent: February 10, 2015Assignee: Volterra Semiconductor CorporationInventor: Alexandr Ikriannikov
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Patent number: 8947190Abstract: The present invention relates to a planar transformer, the transformer including a core provided to induce formation of a magnetic field, a bobbin coupled to a core, at least one primary winding interposed between the core and the bobbin to supply a power signal, a first insulation unit provided to the at least one primary winding to insulate the at least one primary winding, at least one secondary winding provided to the first insulation unit and insulated by the first insulation unit to transform the power signal, and a second insulation unit provided to the at least one secondary winding to insulate the at least one secondary winding.Type: GrantFiled: April 18, 2011Date of Patent: February 3, 2015Assignee: LG Innotek Co., Ltd.Inventor: Minsu Park
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Patent number: 8947191Abstract: A small reactor capable of appropriately measuring the temperature of a coil is provided. The reactor includes a coil 2 including a pair of coil elements 2a and 2b and a magnetic core including a pair of inner core portions 31 disposed in the respective coil elements 2a and 2b and outer core portions that connect the inner core portions 31 to form a closed magnetic circuit. Each of the coil elements 2a and 2b has an end face shape having a rounded corner portion 21, which is a corner portion of a rectangle that is rounded. A temperature sensor 7 is disposed in a trapezoidal space between the rounded corner portions 21 of the coil elements 2a and 2b that face each other. The temperature sensor 7 is pressed so as to contact the rounded corner portions 21 by the sensor holder portion 54 provided on an insulator, and is capable of appropriately measuring the temperature of the coil 2.Type: GrantFiled: February 9, 2012Date of Patent: February 3, 2015Assignee: Sumitomo Electric Industries, Ltd.Inventor: Kouhei Yoshikawa
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Publication number: 20150028685Abstract: There is provided a coil sheet including: a sheet having a spiral coil thereon; a core located at the central portion of the coil and having a thickness of t mm, wherein the core has a curvature in at least one of an upper surface of the core, a corner at which the upper surface and a side surface meet each other, and a position in which the core and the sheet meet each other.Type: ApplicationFiled: October 23, 2013Publication date: January 29, 2015Applicant: SAMSUNG ELECTRO-MACHANICS CO., LTD.Inventors: Kang Ryong CHOI, Yong Il Kwon, Sung Yong An, Chang Ryul Jung
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Publication number: 20150028981Abstract: An RF transformer is provided. The RF transformer includes a ferrite core and a winding coil structure formed around the ferrite core. The winding coil structure is in electrical contact with a center portion of the ferrite core. The winding coil structure is essentially electrically and physically spaced from external portions of the ferrite core.Type: ApplicationFiled: July 23, 2013Publication date: January 29, 2015Applicant: PPC Broadband, Inc.Inventors: Leon MARKETOS, Erdogan ALKAN
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Publication number: 20150022309Abstract: A magnetic metal-containing resin that includes 70 to 88 mass % of a magnetic metal powder and 5.0 mass % or more of an oxide, and the oxide is 2.8 ?m or more in average particle size. The magnetic metal-containing resin preferably includes 10 mass % or more of the oxide.Type: ApplicationFiled: October 6, 2014Publication date: January 22, 2015Inventor: Hiroshi Marusawa
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Publication number: 20150022308Abstract: There is provided a magnetic material including a plurality of composite magnetic particles including oxide layers formed on surfaces thereof, and a ferrite present between the plurality of composite magnetic particles.Type: ApplicationFiled: October 21, 2013Publication date: January 22, 2015Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Byeong Cheol MOON, Il Jin PARK, Myeong Gi KIM, Jin Woo HAN
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Publication number: 20150021083Abstract: An electronic device comprising a first magnetic powder; a second magnetic powder, wherein the mean particle diameter of the first magnetic powder is larger than the mean particle diameter of the second magnetic powder, the Vicker's Hardness of the first magnetic powder is greater than the Vicker's Hardness of the second magnetic powder by a first hardness difference, and the first magnetic powder mixes with the second magnetic powder; and a conducting wire buried in the mixture of the first magnetic powder and the second magnetic powder; wherein by means of the first hardness difference of the first magnetic powder and the second magnetic powder, the mixture of the first magnetic powder and the second magnetic powder and the conducting wire buried therein are combined to form an integral magnetic body at a temperature lower than the melting point of the conducting wire.Type: ApplicationFiled: October 7, 2014Publication date: January 22, 2015Inventors: Wen-Hsiung Liao, Roger Hsieh, Hideo Ikuta, Yueh-Lang Chen
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Patent number: 8933774Abstract: Provided are a reactor which can perform step-up/step-down operations and soft switching with a small size and a smaller leakage inductance, and a method of adjusting a leakage inductance of the reactor. A reactor 1A includes a magnetic core 10A having a pair of inner core portions and forming a closed magnetic path, a main coil 11A having main coil elements 11a and 11b, and a sub-coil 12A having sub-coil elements 12a and 12b. The coil elements 11a and 12a are concentrically layered over one of the inner coil portions, and the coil elements 11b and 12b are concentrically layered over the other inner coil portion. One end portion of a wire 11w of the main coil 11A and one end portion of a wire 12w of the sub-coil 12A are joined to each other. A spacing between adjacent turns constituting the sub-coil element 12a (12b) is wider than that between adjacent turns constituting the main coil element 11a (11b). Thus, the reactor 1A has a smaller leakage inductance.Type: GrantFiled: June 22, 2010Date of Patent: January 13, 2015Assignee: Sumitomo Electric Industries, Ltd.Inventor: Shinichiro Yamamoto
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Publication number: 20150009005Abstract: Apparatus and method for generating electric energy in an electric power transmission system includes an AC cable including a core, wherein a portion of the core is partially surrounded by an apparatus including a ferromagnetic body and an electrically conducting winding. The ferromagnetic body extends along a longitudinal axis and has, in a cross section taken along said longitudinal axis, a shape defined by an arc. The electrically conducting winding is wound around the ferromagnetic body to form turns in planes substantially perpendicular to the arc.Type: ApplicationFiled: September 26, 2014Publication date: January 8, 2015Applicant: PRYSMIAN S.p.A.Inventors: Lluis-Ramon SALES CASALS, Joaquin DEL RIO FERNANDEZ, Rafael LARA, Antonio Manuel LAZARO
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Publication number: 20150008752Abstract: An inductive power transfer pad for transmitting wireless power to a wireless power receiver separable from the inductive power transfer pad. The inductive power transfer pad includes a coil having at least one turn of a conductor in a first layer and a plurality of ferromagnetic slabs arranged in a second layer substantially parallel to that of the coil, the ferromagnetic slabs being arranged so as to be spaced apart from one another about the coil with their lengths extending across a longitudinal length of the coil.Type: ApplicationFiled: May 5, 2014Publication date: January 8, 2015Applicant: Auckland Uniservices LimitedInventors: John Talbot Boys, Grant Anthony Covic
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Patent number: 8928447Abstract: A reactor 1? includes one coil 2, a magnetic core 3 to which the coil 2 is arranged, and a case 4 containing an assembly 10 of the coil 2 and the magnetic core 3. The magnetic core 3 includes an inner core portion 31 inserted into the coil 2, and a coupling core portion 32 disposed around the coil 2. The coupling core portion 32 is made of a mixture of magnetic powder and resin. The coil 2 is covered with the coupling core portion 32 and is enclosed within the case 4 in a sealed state. The reactor 1? includes, in an outermost surface region exposed at an opening of the case 4, a magnetic shield layer 5 made of non-magnetic powder, having smaller specific gravity than the magnetic powder and having electrical conductivity, and the resin. A small reactor capable of reducing magnetic flux leaked to the outside is thereby provided.Type: GrantFiled: May 27, 2011Date of Patent: January 6, 2015Assignee: Sumitomo Electric Industries, Ltd.Inventor: Kazuhiro Inaba
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Publication number: 20150002252Abstract: A coil component that includes a drum-shaped core with an upper flange and a lower flange, a winding wound around the core, and an exterior resin between the upper flange and lower flange of the core. The exterior resin includes an inorganic filler at 91 to 95 mass % with respect to the exterior resin, and a resin that has more than one glass transition temperature and has a phase-separated structure. A flange spacing distance between the upper flange and the lower flange is 1.0 mm or less.Type: ApplicationFiled: September 17, 2014Publication date: January 1, 2015Inventors: Hiroyuki Masaki, Nobuyuki Kinami, Hiroshi Marusawa
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Publication number: 20150002254Abstract: The invention relates to a process for the impregnation of air core reactors or parts of air core reactors and impregnated air core reactors or parts thereof obtainable by said process.Type: ApplicationFiled: June 27, 2012Publication date: January 1, 2015Applicant: Huntsman International LLCInventors: Astrid Beigel, Christian Beisele, Ulrich Massen
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Patent number: 8922316Abstract: The device and manufacturing method for a Direct Current (DC) filter inductor are disclosed. The device comprises a magnetic core, at least one first winding and at least one second winding. The magnetic core has at least one air gap. The first winding and the second winding are connected to each other in parallel that having a mutual inductance, and are wrapped around the magnetic core respectively. A difference between a first inductance of the first winding and the mutual inductance is smaller than a difference between a second inductance of the second winding and the mutual inductance. A Direct Current (DC) resistance of the first winding is larger than a DC resistance of the second winding. The first winding is closer to the air gap compared to the second winding.Type: GrantFiled: August 23, 2012Date of Patent: December 30, 2014Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventor: Zengyi Lu
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Patent number: 8922322Abstract: A combined structure of hollow bobbin and conductive sheet for a transformer includes a hollow bobbin and at least one conductive sheet. The hollow bobbin includes an outer surface and at least one positioning structure formed on the outer surface. The conductive sheet is fit on the outer surface of the hollow bobbin and includes a main body and at least one engaging structure. The main body has a hollow portion, making the main body to have an inner circumference. The engaging structure is formed on the inner circumference of the main body and is engaged with the positioning structure of the hollow bobbin. The transformer includes at least one winding disposed on the outer surface of the hollow bobbin and abutting against the conductive sheet.Type: GrantFiled: March 18, 2013Date of Patent: December 30, 2014Assignee: Delta Electronics, Inc.Inventors: Hua-Sheng Lin, Yi-Fan Wu, Yu-Chieh Li, Zhi-Liang Zhang, Ching-Hsien Teng, Yu-Liang Hung
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Patent number: 8917156Abstract: The invention relates to a transformer construction comprising a plurality of transformer cores configured to share magnetic flux paths and, as a result, at least one of the cores comprises a post and an associated sidewall having an effective cross-sectional area which is less than that of the post. Such a construction may be employed in a power conditioning unit, for example, for a photovoltaic module, which is configured to operate the cores out of phase from each other. Also described is a transformer winding comprising a longitudinal spine having a first turn emanating from a first portion of the spine in a first transverse direction and a second turn emanating from a second portion of the spine in a second transverse direction, wherein the second transverse direction is opposite to the first transverse direction.Type: GrantFiled: February 19, 2013Date of Patent: December 23, 2014Assignee: Enecsys LimitedInventors: Paul Garrity, Arturo Silva
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Publication number: 20140368306Abstract: An inductor and an electronic device including the same are provided. The inductor includes: a coil in which an electric current flows; and a core that the coil is wound around, wherein the core includes a central portion that the coil is wound around; extensions extending from opposite edges of the central portions; and lateral portions extending from the extensions along the circulation path of the magnetic flux and facing the central portion with the coil disposed there between, and a first height at a first position of the extension portions on the circulation path of the magnetic flux spaced away from the edges of the central portion by a first distance which is larger than a second height at a second position on the circulation path of the magnetic spaced away from the edges of the central portion by a second distance which is longer than the first distance.Type: ApplicationFiled: April 4, 2014Publication date: December 18, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Jeong-il KANG
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Patent number: 8907759Abstract: A magnetic core includes a first core and a second core, which is formed of material having a lower magnetic permeability and a higher saturation magnetic flux density than those of the first core. The second core forms a closed magnetic path together with the first core. The second core has a distal surface held in contact with the first core. The area of the distal surface is larger than the smallest cross-sectional area of the second core in a direction perpendicular to the flow direction of magnetic flux in the closed magnetic path.Type: GrantFiled: October 11, 2012Date of Patent: December 9, 2014Assignee: Kabushiki Kaisha Toyota JidoshokkiInventor: Sergey Moiseev
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Publication number: 20140354384Abstract: A magnetic core for a transformer, which includes a closed ring with a thick part and a thin part. The thin part is magnetically saturated before the thick part when excited by the same increasing magnetic fields. The thin part only operates briefly at or near first quadrant saturation point or a third quadrant saturation point and, for the rest of the time, it operates in a state between the first quadrant saturation point and the third quadrant saturation point. The present invention overcomes the drawbacks of the conventional magnetic core for a self-excitation push-pull type converter, and significantly improves the efficiency of the converter when it is under a light load, and further improves its efficiency while under a rated load. As the number of turns of the coil on the magnetic saturation transformer is reduced, the working frequency of the converter is improved while still keeping the loss low.Type: ApplicationFiled: March 20, 2012Publication date: December 4, 2014Applicants: MORNSUN GUANGZHOU SCIENCE & TECHOLOGY LTD.Inventor: Baojun Wang
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Publication number: 20140354391Abstract: A noise filter and an electronic device including the same are disclosed. The noise filter is configured to suppress noise generated in a power line or a ground line of a power circuit unit provided in an electronic device. The electronic device including: at least one coil connected to the power line and the ground line; and a core around which the coil is wound, a common core portion configured to suppress common mode noise generated at the ground line and a normal core portion configured to suppress normal mode noise generated at the power line are formed as a single body. Thus, the common mode noise filter and the normal mode noise filter are integrated with each other to thereby improve productivity and reduce production costs.Type: ApplicationFiled: April 3, 2014Publication date: December 4, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-yong JOO, Jin-hyung LEE
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Patent number: 8896405Abstract: A coil-type electronic component having a coil inside or on the surface of a base material, characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains whose main ingredients are iron, silicate and chromium, and that an oxide layer is formed on the surface of each soft magnetic alloy grain, where the oxide layer is produced as a result of oxidization of the grain and has more chromium than the alloy grain, and this oxide layer has a two-layer structure constituted by an inner layer whose main ingredient is chromium oxide and an outer layer whose main ingredient is iron-chromium oxide, and the outer layers of soft magnetic alloy grains are inter-bonded.Type: GrantFiled: October 26, 2012Date of Patent: November 25, 2014Assignee: Taiyo Yuden Co., Ltd.Inventors: Masahiro Hachiya, Atsushi Tanada, Kenji Otake, Kiyoshi Tanaka, Tetsuyuki Suzuki
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Patent number: 8896407Abstract: An inductor comprises a magnetic core and a coil. The magnetic core has a wound portion around which the coil is wound, and a peripheral portion. The magnetic core is formed from two or more preliminarily-formed-bodies which are pressure-molded in a state where the coil winds one or more preliminarily-formed-bodies which form the wound portion. The preliminarily-formed-bodies include at least one preliminarily-formed-body which forms the peripheral portion while not form the wound portion. Each of the preliminarily-formed-bodies is made of a mixture of flat magnetic powders and an organic binder so as to have a plate-like shape. The flat magnetic powders are oriented so as to be parallel to the preliminarily-formed-body.Type: GrantFiled: November 14, 2012Date of Patent: November 25, 2014Assignee: NEC TOKIN CorporationInventors: Kenichi Chatani, Naoharu Yamamoto
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Publication number: 20140327505Abstract: An inductor includes a magnetizable core with a winding axis and at least one winding. The winding is formed by a conductor which at least partly surrounds the winding axis of the core. The winding is formed in one layer and a cross section of the conductor is rectangular, in particular square.Type: ApplicationFiled: August 20, 2012Publication date: November 6, 2014Applicant: Schmidhauser AGInventors: Dirk Schekulin, Silvia Gross-Kaeufler, Chriss Haertsch, Thomas Bisig, Alex Itten, Piere Cavin
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Publication number: 20140320255Abstract: A magnetic core and a magnetic component using the same are disclosed. The magnetic core has a first magnetic material and a non-uniform filling section in connection; also, the magnetic core has a magnetic flux direction, for which the non-uniform filling section perpendicular to the magnetic flux direction contains at least two kinds of magnetic material. Comparing to a conventional uniform-filling magnetic core, the non-uniform filling section within the magnetic component of the magnetic core can provide higher initial inductance and better DC-bias characteristics; this improved magnetic component can provide higher inductance in specific mandatory loads, or less efficiency loss in a condition of the same inductance provided.Type: ApplicationFiled: October 29, 2013Publication date: October 30, 2014Applicant: DELTA ELECTRONICS, INC.Inventors: Teng LIU, Ke DAI, Ming-Hui DAI
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Publication number: 20140320256Abstract: A reactor 1A of the present invention includes one coil 2 and a magnetic core 3. The coil 2 includes a turn portion 2t formed by a spirally wound wire 2w whose conductor is a rectangular wire, and draw-out portions 2d of the wire 2w drawn out from the turn portion 2t. The magnetic core 3 is disposed inside and outside the coil 2 to form a closed magnetic path. At least part of the outer circumference of each draw-out portion 2d is formed by a composite material containing magnetic substance powder and resin. The reactor 1A further includes a mold resin portion 21 that covers the outer circumference of the turn portion 2t and at least part of the draw-out portions 2d to retain the shape of the coil 2. In each corner portion region of the mold resin portion 21 covering corresponding corner portion of the wire 2w at each draw-out portion 2d, the outer circumferential face being brought into contact with the outer core portion 32 is formed by a curved surface.Type: ApplicationFiled: November 1, 2012Publication date: October 30, 2014Inventor: Kazuhiro Inaba
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Publication number: 20140313002Abstract: A non-linear inductor is disclosed herein. The non-linear inductor includes a first magnetic core, a second magnetic core, a third magnetic core, a fourth magnetic core, a fifth magnetic core and a coil unit. The first and the second magnetic core are disposed in parallel. The third magnetic core, the fourth magnetic core and the fifth magnetic core are all vertically disposed between the first and the second magnetic core. The fourth magnetic core is vertically disposed between the first and the second magnetic core. The fourth and the fifth magnetic core are disposed at both sides of the third magnetic core in parallel. The coil unit winds around the third magnetic core. A magnetic resistance of the fourth magnetic core passed through by an inductive magnetic flux is different from a magnetic resistance of the fifth magnetic core passed through by the inductive magnetic flux.Type: ApplicationFiled: November 20, 2013Publication date: October 23, 2014Applicant: DELTA ELECTRONICS, INC.Inventors: Tsung-Nan KUO, Ming-Xian LI
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Patent number: 8866580Abstract: A power converting apparatus makes reduction of power loss possible and operates in a two-phase mode. A power converting apparatus of the inventive concept includes I-shaped block cores, each being made of a magnetic material; and E-shaped cores, each being produced by combining two L-shaped magnetic materials to each of the I-shaped cores. In each of the E-shaped cores, the block core is defined as a central leg, the other two legs are defined as a first outside leg and a second outside leg, respectively, and a closed magnetic path is configured by two E-shaped cores combined such that one of respective central legs in the two E-shaped cores, one of respective first outside legs therein, and one of respective second outside legs therein are caused to face the other of the central legs, the other of the first outside legs, and the other of the second outside legs.Type: GrantFiled: May 12, 2012Date of Patent: October 21, 2014Assignees: Shinto Holdings Co., Ltd., Nikkindenji Kogyo Co., Ltd.Inventors: Yuichi Hasegawa, Hiromune Ishii, Yuki Satake, Takeshi Kawahara
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Patent number: 8854172Abstract: An inductor and a transformer, each of which includes a first bobbin on which a first coil is wound and a second bobbin on which a second coil is wound, are provided. The first bobbin includes a first bobbin part on which the first coil is wound and a first support part provided at one end of the first bobbin part. The second bobbin includes a second bobbin part on which the second coil is wound and a second support part provided at one end of the second bobbin part. Another end of the first bobbin part is coupled to the second support part and another end of the second bobbin part is coupled to the first support part.Type: GrantFiled: November 18, 2011Date of Patent: October 7, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Young Deok Choi, Sun Mi Jung, Tae Sung Kim, Hyo Soon Choi