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8154371 |
Method and apparatus for adjusting displacement current in an energy transfer element
A method includes calculating a number of turns of a shield winding included in an energy transfer element of a power supply, where the calculating is to have a low noise current in an input...
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8115582 |
Inductor topologies with substantial common-mode and differential-mode inductance
An inductor includes a core that has a window (164). The core includes a first core member and a second core member. A first winding is coupled to the first core member and a second winding is...
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8085122 |
High voltage step-up dry power transformer and power supply unit comprising at least one such transformer
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...
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8077005 |
Aligned multilayer wound coil
The invention provides an aligned multilayer wound coil that is compact in size and excellent in productivity, an apparatus for manufacturing the same, an electrical equipment and a non-inductive...
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8054149 |
Monolithic inductor
This invention discloses a monolithic inductor including a body made by compressing a magnetic powder, a coil positioned in the body, and a permanent magnet positioned in the body and in a magnetic...
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8044822 |
Rotational transmitter
The invention relates to a rotary transmitter for example for use in machine tools with adjusting tools. The rotary transmitter comprises a stator part (18) and a rotor part (26), each having a...
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8031039 |
Separate type magnetic shield apparatus
It is an object of the present invention to provide a separate type magnetic shield apparatus which has high access performance to a magnetically shielded space, in which magnetic shielding is very...
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7994887 |
Outdoor dry transformer having shield made of high functional fiber
An outdoor dry transformer having a shield made of a high functional fiber. The transformer includes a transformer body having a core and first and second coils wound on the core; a shield...
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7898376 |
Transformer apparatus with shielding architecture and shielding method thereof
A transformer apparatus and a transformer shielding method are provided for shielding external electronic noises and protecting against erosion. The transformer apparatus comprises a toroidal core,...
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7876188 |
Green technologies: the killer application of EMI-free on-chip inductor
The EMI-free planar inductor is the core technology of the green technology. The EMI-free planar inductor adopts the structure of the closed magnetic field flux IC inductor (CMFFICI). All the...
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7868724 |
Method for suppressing common mode noise
The present invention discloses a power converter with low common mode noise. The power converter having a primary side and a secondary side, comprises a transformer having a primary winding and a...
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7808351 |
High voltage transformer with a shield ring, a shield ring and a method of manufacture same
A high voltage transformer including a transformer housing. Internal components and provided in the transformer housing. The internal components are submerged in transformer oil and are provided...
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7746206 |
Inverter transformer and inverter power module having the same for use in electric/electronic device
An inverter power module for use in an electric/electronic device includes a driving circuit board, a power transformer mounted on the driving circuit board, an inverter transformer mounted on the...
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7737814 |
Electrostatic shield and voltage transformer
An electrostatic shield and a voltage transformer having a high voltage winding and a low voltage winding. The shield takes the form of a concentric winded coil, made from a round conductive wire...
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7486066 |
Transformer, multi-output switching power supply, liquid crystal television
The present invention aims to obtain a stable output voltage without requiring an extra circuit by suppressing influence of noise of the primary winding and voltage induction by leakage inductance....
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7466564 |
Radio frequency unit
The invention provides a radio frequency unit including a box-shaped chassis into which an insulating board loaded with electronic components is housed, and two connectors attached to a front plate...
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7286035 |
Highly insulated inductive data couplers
There is provided an inductive coupler for coupling a signal to a power line. The inductive coupler includes a magnetic core for placement about the power line, and a coil wound around a portion of...
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7262679 |
Rotary transformer
A rotary transformer for coupling electrical power at a high level into a rotor operable at a high rotational speed without the introduction of undesirable electromagnetic torque and problems of...
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7259625 |
High Q monolithic inductors for use in differential circuits
The present invention provides a differentially driven monolithic inductor circuit having a shield differentially driven by phase shift buffers and a single-ended monolithic inductor circuit having...
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7236073 |
Inductance part and electronic apparatus therewith
An inductance part is provided which includes: a coil which is formed by bending a metal plate into a coil shape; a magnetic body in which the coil is buried; and a short ring which faces the coil.
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7211740 |
Valve metal electromagnetic interference filter
A valve metal electromagnetic interference filter (VMEIF). The filter comprises a porous valve metal pellet with at least three terminals extending therefrom. A dielectric layer at least partially...
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7151429 |
Inductor element having a high quality factor
An inductor element having a high quality factor, wherein the inductor element includes an inductor helically formed on a semiconductor substrate and a magnetic material film on a surface of the...
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7026904 |
Multiple layer inductor and method of making the same
A multiple layer inductor has a first spiral conductive pattern disposed on a first surface; a second spiral conductive pattern disposed on a second surface; a continuing interconnection coupled to...
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7009482 |
Controlled inductance device and method
Improved inductive apparatus having controlled core saturation which provides a desired inductance characteristic with low cost of manufacturing. In one embodiment, a pot core having a variable...
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6965228 |
Proximity switch encapsulated in a plastic housing and having a shield
A proximity switch having a coil former (3) which is fitted with at least one coil (4, 5, 6), has an associated board (8) and is held by a plastic housing (1), and having an electrically conductive...
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6963262 |
Reduction of capacitance effects in potential transformers
A transformer includes a first winding and a second winding coupled to the first winding through a magnetic circuit so that current through the first winding induces a voltage across the second...
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6931713 |
Methods of making low loss, high frequency composite magnetic material
A high frequency, low loss, power, laminated magnetic material includes alternating magnetic plates of low hysteresis loss material and electrically insulating films. The multi-layer structure...
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6888436 |
Isolation transformers
The issue to be resolved by the present invention is to provide isolation transformers with high noise attenuation rates as well as high reliability, in the high-frequency region above a few MHz,...
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6781501 |
Low external field inductor
An inductor is wound axially around a cylindrical center structure, such as a core or form, so that each turn includes portions extending axially along a circumferential outer surface of the center...
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6746785 |
Device for setting a defined electric potential on a ferrite core of an inductive component and/or for reducing damping of the inductive component by losses induced by its magnetic field
A metal layer is bonded to the ferrite core of an inductive component. A defined electric potential is thereby set for the ferrite core of an inductive component and/or the damping of the inductive...
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6724290 |
Microcoil
A coil constructed using the additive technique on the surface of a substrate is characterized in that the conductors of the coil are in contact with an insulating material made at least in part of...
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6680665 |
Three-phase current transformer
In a three-phase current transformer, a plate adaptor includes first to third coil insertion slots and is a magnetic shield. First to third Rogowskii coils are arranged in the first to third coil...
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6653924 |
Transformer with controlled interwinding coupling and controlled leakage inductances and circuit using such transformer
A transformer in which a magnetic medium provides flux paths within the medium, two or more windings enclose the flux paths at separated locations along the paths, and an electrically conductive...
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6646198 |
Devices to reduce electro-magnetic field radiation
Apparatus for reducing electromagnetic field radiation from an electrically conducting enclosure is disclosed. The apparatus comprises an electrically conducting element having two extremities and...
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6639497 |
Stationary induction apparatus
Leakage fluxes from windings and leads of a stationary induction apparatus are confined within a tank. The stationary induction apparatus includes an electric functional units each including a...
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6600402 |
Bobbins, transformers, magnetic components, and methods
A bobbin is adapted to support a winding on a permeable core and has a wall that provides a confined thermally conductive channel that causes conduction of heat along a predetermined path from the...
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RE38082 |
High frequency pulse transformer for an IGBT gate drive
A pulse transformer for use in a high frequency motor controller to isolate the electronic control stages from the power stages in a motor controller. The primary and secondary windings are wound...
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6489663 |
Spiral inductor semiconducting device with grounding strips and conducting vias
An integrated semiconducting device comprises a semiconducting substrate, a plurality of grounding strips disposed above the substrate in a lower metal level of the semiconducting device, an...
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6480088 |
Common mode choke coil
A common mode choke coil is realized in which countermeasures against leakage flux are taken so as to reduce adverse effects on an external apparatus. Coils 291, 292 are wound around a toroidal...
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6445269 |
Dry-type high-voltage winding
The invention concerns an air-core primary voltage winding comprising a conductive wire coil coated with an insulating sheath, characterized in that said coil (1) is encapsulated in a high voltage...
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6432524 |
Electrode for field control
An electrode for control of an electric field strength in a gaseous electrically insulating medium at the surface of the electrode and in the vicinity of the electrode, comprising an electrically...
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6429762 |
Data communication isolation transformer with improved common-mode attenuation
A data communications isolation transformer uses an E—E core structure within an integrated circuit package. Two E-shaped core sections of the transformer fit together to form a core structure h...
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6420952 |
Faraday shield and method
A planar transformer including a Faraday shield between primary and secondary windings. The Faraday shield is a conductive layer having low conductivity areas. The low conductivity areas may be...
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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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6320490 |
Integrated planar transformer and inductor assembly
An integrated transformer and inductor assembly for use in soft switching or resonant power converters, and the like. The assembly has a planar structure and includes a planar transformer and a...
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6313624 |
Position sensor with integrated signal-conditioning electronics on a printed wiring board
A position sensor, such as a rotary position sensor, includes the signal-conditioning electronics in the housing. The signal-conditioning electronics are disposed on a printed wiring board, which...
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6288625 |
Current transformer for a metal-enclosed gas-insulated high-voltage installation
This current transformer is provided, in particular, for a metal-enclosed gas-insulated high-voltage installation. It has a toroidally formed current sensor enclosing a current path and a signal...
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6222435 |
Stick coil for igntion systems
A bar-type coil for ignition systems, in particular, for as an ignition coil in internal combustion engines of motor vehicles, is designed to minimize the interference voltage produced by the...
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6191673 |
Current transformer
A current transformer includes transformer units combined into a bundle, each of the transformer units including an annular iron core surrounding a bus conductor and a secondary winding wound...
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6175295 |
Inductance device
In an inductance device in which a coil is wound around a bobbin having at least two chambers divided by a collar and a ferrite core is mounted, the bobbin includes a chamber having a center hole...
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