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7459863 |
Transformer and multi-lamp driving circuit using the same
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...
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7327207 |
Lamination type electronic component
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...
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7304867 |
DC-DC converter of multi-output type
A DC-DC converter of multi-output type is provided wherein a primary winding 5 a is wound around core halves 5 g , 5 h of a transformer 5 between first and second secondary windings 5 b , 5...
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7154364 |
Electrical machine
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 )...
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7098764 |
Main conductor for a capacitively controlled high-voltage winding
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...
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6867674 |
Transformer
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...
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6853284 |
High-voltage transformer
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...
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6751847 |
Laser-assisted fabrication of NMR resonators
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...
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6683523 |
Laminated impedance device
In a laminated impedance device, coil conductor patterns are electrically connected in series through via-holes to form a substantially U-shaped spiral coil. A first group of the coil conductor...
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6661187 |
Fly back transformer
A fly back transformer comprises a horizontal output section; a low-voltage bobbin forming a first coil; a high-voltage bobbin forming a second coil having high-voltage coil layers and high-voltage...
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6633220 |
Coil apparatus and manufacturing method for the same
To prevent a substrate for mounting electronic components from being damaged when cores are rubbed together during assembly, a pair of core members sandwich a part of a coil pattern formed on the...
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6617949 |
Choke coil
A choke coil has small difference of wire wound resistances between coils to obtain sufficient unbalance attenuation amount, superior in workability in winding and reduced leakage inductance and...
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6498553 |
Laminated type inductor
A small-sized laminated inductor made via a simple firing process includes insulating magnetic sheets made of high permeability materials in which first coil conductors are provided on the surfaces...
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6414291 |
Transformer for a microwave oven
A transformer for a microwave oven capable of preventing quality deterioration thereof due to damaged insulating paper, includes a first core having a coil inserting section having one open side; a...
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6377153 |
Transformer apparatus for use in insulated switching power supply apparatus with reduction of switching noise
A transformer apparatus which can reduce a switching noise current flowing between a primary side ground and a secondary side ground is provided. The transformer apparatus includes a first core...
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6160467 |
Transformer with center tap
In one embodiment of the present invention, a transformer includes a first secondary winding made of stamped and bent metal. This first secondary winding has a coil portion with substantially...
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6075431 |
Converter transformer
A transformer has a bobbin made of a resin material having flanges (2a to 2f) formed thereon, at least three chambers defined between the adjacent flanges. A primary auxiliary winding (P2), which...
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6046662 |
Low profile surface mount transformer
A transformer is provided that consists of a primary winding, a secondary winding and a magnetic core. The primary winding is wound directly around the magnetic core, thereby removing the need for...
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5999078 |
Transformer and rectifier module with half-turn secondary windings
A transform-rectifier module has a one-half turn secondary winding installed with very short, direct connections to four rectifiers. The core of the transformer has two parallel through holes. The...
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5917396 |
Wideband audio output transformer with high frequency balanced winding
A wideband audio output transformer for use with a push-pull vacuum tube amplifier using a multifilar ribbon in which primary windings and secondary windings coexist. The multifilar ribbon is wound...
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5886610 |
Ultra flat magnetic device for electronic circuits
The low-profile magnetic device comprises at least one winding formed by a plurality of conductive metal laminations (9) of substantially annular layout, superposed and electrically insulated from...
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5798681 |
Garage door position indicator
The garage door position indicator contains a radio frequency (RF) transmitter with an electronic angle sensor attached onto a garage door, and a RF receiver with a visual/audio indicator. The...
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5719547 |
Transformer with bifilar winding
A transformer which has a core, a wire for a primary coil and two wires for a secondary coil. The wire for a primary coil and one of the wires for a secondary coil are wound around a body of the...
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5716713 |
Stacked planar transformer
A process for preparing an insulated metallized substrate, wherein a specified metallized substrate is heated from ambient temperature to a peak temperature of at least about 800 degrees centigrade...
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5694104 |
Low profile high power surface mount transformer
A low profile transformer comprises a support member for supporting a coil winding, a first elongated conductive tape forming at least one conductor having lead terminals formed integral therewith...
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5660756 |
High-voltage transformer for a microwave oven power supply
In a high-voltage transformer for the power supply of a magnetron in a microwave oven, of the type comprising a primary coil, a high-voltage secondary coil and a heater secondary coil, the two...
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5635892 |
High Q integrated inductor
An inductive structure is provided which displays an increased self-inductance and improved Q at high frequencies. The improvement resides in the disposition proximate the inductive structure an...
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5579887 |
Coin detection apparatus
A differential type sensing unit which includes a winding core having a winding shaft is described. In one embodiment, a post extends from the winding shaft and is located intermediate first and...
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5570074 |
Very low leakage inductance, single-laminate transformer
A transformer having a very low, predetermined leakage inductance includes an elongate dielectric laminate having two surfaces. A primary winding having a pattern conformal to the configuration of...
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5565836 |
Nullification of magnetic fields relative to coils
The internal and/or external magnetic fields of a coil are nullified to ad structurally detrimental Lorentz Forces and/or environmentally hazardous magnetic fields, in accordance with...
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5565835 |
Substantial nullification of external magnetic fields and lorentz forces regarding toroidal inductors
Main and supplemental windings are combined in a toroidal inductor to subntially nullify Lorentz Forces on the main winding and the magnetic field thereof which passes externally from the inductor.
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5543773 |
Transformers and coupled inductors with optimum interleaving of windings
A transformer or coupled inductor with any arbitrary turns ratio (for example, non-integral), and optionally with multiple secondary windings, has primary and secondary windings interleaved on the...
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5532667 |
Low-temperature-cofired-ceramic (LTCC) tape structures including cofired ferromagnetic elements, drop-in components and multi-layer transformer
A ferromagnetic material (18,20) in ink or tape form is sinterable using a same firing profile as and has approximately the same thermal shrinkage characteristics as low-temperature-cofired-ceramic...
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5521573 |
Printed coil
A printed coil, having good magnetic coupling, low loss, and good high frequency characteristics, comprises a plurality of conductor forming planes on which a conductor pattern having one or more...
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5508673 |
High frequency transformer apparatus
A transformer designed for 1:N voltage transformation (where 1:N may be any rational number) at high frequencies (such as over 7 megahertz) can achieve acceptable frequency response and attendant...
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5500632 |
Wide band audio transformer with multifilar winding
An output transformer for use with a push-pull vacuum tube amplifier using a multifilar ribbon in which primary windings and secondary windings co-exist. The multifilar ribbon is wound continuously...
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5497052 |
Isolated constant wattage lamp ballast
A constant wattage ballast transformer of the isolated type permitting the electrical grounding of a mounting shell of the lamp it powers in which a primary, secondary and auxiliary winding are...
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5473302 |
Narrow profile transformer having interleaved windings and cooling passage
An improved narrow profile transformer and method of making is disclosed comprising a primary winding and a secondary winding with the secondary winding being interleaved with the primary winding....
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5463303 |
Multilayer separate windings of inductive charge coupler for automobile battery charging transformer
The primary windings and part of the magnetic circuit of an automobile battery charging transformer are mounted in a separable multiple panel inductive charge coupler which is insertable into and...
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5430426 |
Transformer
A pancake-type transformer particularly suited for connection to an inductor for inductively heating crankshafts is comprised of a single turn secondary defined by a plurality of generally U-shaped...
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5381124 |
Multi-turn z-foldable secondary winding for a low-profile, conductive film transformer
A low-profile, conductive film transformer includes a conductive film primary winding and a multi-turn, conductive film secondary winding. The multi-turn secondary winding is configured on a...
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5367760 |
Method of making a narrow profile transformer
An improved narrow profile transformer and method of making is disclosed comprising a primary winding and a secondary winding with the secondary winding being interleaved with the primary winding....
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5331536 |
Low leakage high current transformer
A transformer and associated rectifier for supplying low voltage (e.g. 5 volts), high current (e.g. 1,500 amperes) power to a load such as a supercomputer, with a high electrical conversion...
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5291173 |
Z-foldable secondary winding for a low-profile, multi-pole transformer
A high-frequency, low-profile transformer having at least one pair of magnetic poles includes a primary winding having a z-folded, continuous primary conductive film with a generally serpentine...
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5276421 |
Transformer coil consisting of an insulating ribbon comprising electrically conducting patterns making it possible to produce paralleling of the patterns when this ribbon is accordion folded
Transformer coil consisting of an insulating ribbon comprising electrically conducting patterns making it possible to produce paralleling of the patterns when this ribbon is accordion folded....
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5241293 |
Flyback transformer including a plated metal coil and having reduced leakage flux
A flyback transformer includes at least one primary coil and at least one secondary coil formed thereon. Each primary and secondary coil may be a metal plating coil with an insulating bobbin and a...
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5206621 |
Barrel-wound conductive film transformer
A transformer having a barrel winding comprised of flat conductive film conductors is provided with a repeatable winding configuration by employing a dielectric metal laminate as the winding...
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5184103 |
High coupling transformer adapted to a chopping supply circuit
Turns of primary and secondary windings of a chopper power supply transformer are formed by magnetically coupled stacked parallel planar printed circuit conducting layers. The primary winding is...
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5175525 |
Low profile transformer
The present invention provides a power transformer having a low profile and low overall volume. The power transformer also has improved isolation between the primary and the secondary windings,...
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5168255 |
Three phase transformer
Three phase transformer, e.g. distribution transformer, comprising three frame shaped winding assemblies, each containing primary and secondary windings, two of said assemblies being substantially...
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