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Niobium-tin superconducting coil

Patent Number: 8111125
Publication Date: 2012-02-07
Inventors: Antaya, Timothy A.; Schultz, Joel Henry

A Nb₃Sn superconducting coil can be formed from a wire including multiple unreacted strands comprising tin in contact with niobium. The strands are wound into a cable, which is then heated to react the tin and niobium to form a cable comprising reacted Nb₃Sn strands. The cable comprising the reacted Nb3Sn strands are then mounted in and soldered into an electrically conductive channel to form a reacted cable-in-channel of Nb₃Sn strands. The cable-in-channel ...

Inductance element and method for manufacturing the same

Patent Number: 8111124
Publication Date: 2012-02-07
Inventor: Hagiya, Akio

An inductance element is not interfered by peripheral circuits when mounted on a wiring board by forming a closed magnetic path. The inductance element has a small reduction of an inductance value when a direct current is superimposed, and thus has excellent direct current superimposition characteristics. The temperature coefficient of the magnetic permeability of a ferrite sintered body which constitutes a magnetic core can be positive. The temperature coefficient of the magnetic ...

Disc wound transformer with improved cooling

Patent Number: 8111123
Publication Date: 2012-02-07
Inventors: Johnson, Charles W.; Lim, Jong-Yun; Ballard, Robert C.; Lim, Chang-Yeol; Ha, Young-Jin; Lee, Chang-Hyeon; Yang, Hae-Sun; Murillo, Rafael

A method of manufacturing a transformer that includes forming a disc-wound coil using a plurality of pre-formed cooling ducts. Each cooling duct may be supported by a support pipe secured between walls of the cooling duct, or by a removable insert. First and second conductor layers are formed, each of which include plurality of disc windings arranged in an axial direction of the disc-wound coil. A spacer layer is formed between the first and second conductor layers to form a plurality of ...

Magnetic induction devices and methods for producing them

Patent Number: 8106739
Publication Date: 2012-01-31
Inventor: Shpiro, Zeev

A magnetic induction device (MID) is disclosed. The MID includes a core, and at least one first winding including at least one conductive strip deposited on the core and including at least two turns which are substantially simultaneously shaped. Related apparatus and methods are also ...

Ballast for multiple lamps and method of manufacturing the same

Patent Number: 8106738
Publication Date: 2012-01-31
Inventor: Sin, Ho-Sub

Disclosed herein is a ballast for multiple lamps and a method of manufacturing the ballast. A first coil is wound around a bobbin which has a partition formed in the center portion of an inner space thereof. An insulating sheet is stacked on the first coil, and a second coil is wound around the insulating sheet. Two paired core elements are vertically coupled to each other to form each core. Ends of the core elements disposed outside the bobbin are connected, and ends of the core elements ...

Terminal structure of coil device

Patent Number: 8106737
Publication Date: 2012-01-31
Inventors: Sugiyama, Koichi; Mizuno, Osamu

A terminal structure of a coil device includes a coil having a rectangular conductive wire covered with a dielectric film, and a terminal having a fusing part. An end portion of the wire from the coil has first and second flat surfaces, and the fusing part is electrically connected to these flat surfaces by fusing. The fusing part includes a planar portion surface-contacting a first flat surface, and a folded piece folded in a direction perpendicular to a plane of the planar portion. The ...

Low profile coil-wound bobbin

Patent Number: 8102237
Publication Date: 2012-01-24
Inventor: Espino, Marvin C.

A low profile coil-wound bobbin is disclosed. A low profile coil-wound bobbin includes a spool and a terminal. The spool is configured to have a coil-wire arrangement wound around the spool. The terminals are to be coupled to the coil-wire arrangement and a first side of a circuit board. The terminal is configured to mechanically and/or electrically couple the low profile coil-wound bobbin to the first side of the circuit board such that the low profile bobbin extends through the circuit ...

Thin film inductor with integrated gaps

Patent Number: 8102236
Publication Date: 2012-01-24
Inventors: Gallagher, William J.; Herget, Philipp; Fontana, Jr., Robert E.; Webb, Bucknell C.

A thin film inductor according to one embodiment includes one or more arms; one or more conductors passing through each arm; a first ferromagnetic yoke wrapping partially around the one or more conductors in a first of the one or more arms, the first ferromagnetic yoke comprising a magnetic top section, a magnetic bottom section, and via regions positioned on opposites sides of the one or more conductors in the first of the one or more arms, wherein the magnetic top section and magnetic ...

Coreless printed-circuit-board (PCB) transformers and operating techniques therefor

Patent Number: 8102235
Publication Date: 2012-01-24
Inventors: Tang, Sai Chun; Hui, Shu Yuen Ron

Optimal operating techniques are disclosed for using coreless printed-circuit-board (PCB) transformers under (1) minimum input power conditions and (2) maximum energy efficiency conditions. The coreless PCB transformers should be operated at or near the ‘maximum impedance frequency’ (MIF) in order to reduce input power requirement. For maximum energy efficiency, the transformers should be at or near the “maximum efficiency frequency” (MEF) which is below the MIF. The operating ...

Layered inductor

Patent Number: 8102234
Publication Date: 2012-01-24
Inventors: Ozawa, Shuichi; Takeuchi, Katsuyuki; Aisaka, Yukio; Shimogawa, Natsumi

A layered inductor is manufactured by layering “silver-based conductive layers” and “ferrite-based magnetic layers” and simultaneously firing these layers. The conductive layers are via-connected to form a helical coil. A shape of a cross sectional surface of the conductive layer, cut by a plane perpendicular to a longitudinal direction of each of the conductive layers is a substantial trapezoid shape, having an upper base and a lower base. A base angle θ of the trapezoid shape at ...

Coupled inductor with improved leakage inductance control

Patent Number: 8102233
Publication Date: 2012-01-24
Inventor: Ikriannikov, Alexandr

An M-winding coupled inductor includes a first end magnetic element, a second end magnetic element, M connecting magnetic elements, and M windings. M is an integer greater than one. Each connecting magnetic element is disposed between and connects the first and second end magnetic elements. Each winding is wound at least partially around a respective one of the M connecting magnetic elements, and each winding has a respective leakage inductance. The coupled inductor further includes at ...

Variable inductor

Patent Number: 8102232
Publication Date: 2012-01-24
Inventors: Yan, Yuejun; Yan, Yuepeng

Provided herein is a variable inductor, comprising a substrate having a surface layer and an inner layer, a plurality of fixed inductors disposed on the substrate, a signal microstrip line serially connecting the fixed inductors to form a serial fixed inductor, a conductive sheet, a signal input terminal, and a signal output terminal, wherein one end of the serial fixed inductor is connected to the signal input terminal, the other end of the serial fixed inductor is connected to the signal ...

End cap for an inductive component and inductive component

Patent Number: 8102231
Publication Date: 2012-01-24
Inventors: Ocket, Tom; Siotto, Michael; Van Cauwenberge, Jan; Van Nimmen, Steven

An end cap for an inductive component is disclosed. The end cap has a receptacle configured to receive the inductive component along a longitudinal direction, a jaw extending in the longitudinal direction, and a guide device disposed on the jaw and configured to allow turning of a wire ...

Inductive coupler connector

Patent Number: 8102230
Publication Date: 2012-01-24
Inventor: Eriksen, Asbjøm

An inductive coupler connector arrangement for transferring electrical energy between a first connector part to a second connector part. The first and second connector parts have respective ones of first and second magnetic core limbs of which at least one limb carrying a respective electrical winding and respective mating means adapted to provide at mating of said first and second connector parts a juxtaposition of abutting faces of respective ends of said respective ones of first and ...

System for a linear drive

Patent Number: 8102229
Publication Date: 2012-01-24
Inventors: Simon, Olaf; Mahlein, Jochen; Schmidt, Josef

A system, whereby drive units on a movable part, e.g., a turntable or linear drive, are powered in a contactless manner via, in each instance, an inductive coupling to one or more primary ...

Core securing member and its structure

Patent Number: 8102228
Publication Date: 2012-01-24
Inventor: Okamoto, Tadayuki

[PROBLEM] By simplifying a core securing structure of a reactor, miniaturization, lightweight, and low costs of the reactor are achieved.

[SOLVING MEANS] The core securing member to secure a core 109 in a case 101 in the reactor wherein the core 109 and the coil 105 are housed in the case 101 is made up of a first spring portion S1 which gives momentum to a side face of the core 109 in a horizontal direction and a second spring portion ...

Form-less electronic device assemblies and methods of operation

Patent Number: 8098125
Publication Date: 2012-01-17
Inventors: Benjamin, Alan H.; Gilmartin, Michael T.; Kiko, Frederick J.

Improved form-less electronic apparatus and methods for manufacturing the same. In one exemplary embodiment, the apparatus comprises a shape-core inductive device having a bonded-wire coil which is formed and maintained within the device without resort to a bobbin or other form(er). The absence of the bobbin simplifies the manufacture of the device, reduces its cost, and allows it to be made more compact (or alternatively additional functionality to be disposed therein). One variant ...

High-voltage transformer and power supply for an X-ray tube including such a transformer

Patent Number: 8098124
Publication Date: 2012-01-17
Inventors: Perrillat-Amede, Denis; Ernest, Philippe; Baptiste, Georges-William; Feat, Patrick

A high-voltage transformer has a plurality of elementary transformers. Each elementary transformer comprises an elementary primary circuit configured to be powered by an elementary primary voltage, an elementary secondary circuit comprising at least one secondary winding and at least one capacitor that is connected to the terminals of a secondary winding, and an elementary magnetic circuit configured to couple the elementary primary circuit and the elementary secondary circuit. The output ...