Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8089331 | Planar magnetic structure An improved planar magnetic structure in which the voltage gradient between core and windings is reduced by shields disposed between the one or more legs of the core and the windings and extending through the PWB layers; vias are offset to permit them to be containe... | 01/03/2012 |
| 8085121 | Transformer with electrical shield A transformer, in particular an entirely cast resin transformer, includes at least one lower voltage winding and at least one upper voltage winding. The application of an electrical shielding around the upper voltage winding makes it possible to prevent a voltage di... | 12/27/2011 |
| 8063727 | Conductive shielding device Devices and methods for reducing stray magnetic fields from an inductor are disclosed. In some aspects, a device includes a substantially U-shaped component configured to attach to a conductive surface of a printed circuit board and configured to substantially surro... | 11/22/2011 |
| 7868723 | Power coupling device A power coupling device for coupling power to a rotating member includes a primary magnetic core defining a first recess, and a secondary magnetic core defining a second recess and disposed adjacent the primary magnetic core. The primary and secondary cores are arra... | 01/11/2011 |
| 7768369 | Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components without requiring additional windings Apparatus for reducing electrical earth displacement current flow generated by wound components is disclosed. In one aspect, an apparatus includes a plurality of layers of an input winding wound around an energy transfer element core. An outer layer of the plurality... | 08/03/2010 |
| 7750784 | Inductor structure An inductor structure includes a winding turn layer, a shielding layer, and a number of vias. The winding turn layer disposed above a substrate is formed by a number of turns connected in series and t has a first end and a second end. The first end is grounded. The ... | 07/06/2010 |
| 7733205 | Electrically decoupled integrated transformer having at least one grounded electric shield An integrated circuit, such as a radio frequency integrated circuit (RFIC), has a first layer bearing first metallization patterned for defining a first inductive coil, a second layer bearing second metallization patterned for defining a second inductive coil that o... | 06/08/2010 |
| 7692524 | Methods and apparatus for flux dispersal in link inductor Inductors are described for motor drives or other power converters having an inductor connected in a switching circuit, with one or more conductive shields positioned between an inductor coil winding and a flux-carrying inductor core leg to redirect flux away from t... | 04/06/2010 |
| 7639109 | Sensor coil and method of manufacturing same An electronic component in accordance with the invention includes a body, such as a base, having a high magnetic permeability material applied to an external surface thereof and a wire winding wound about at least a portion of the high magnetic permeability material... | 12/29/2009 |
| 7567162 | Apparatus and method for winding an energy transfer element core Apparatus for reducing electrical earth displacement current flow generated by wound components is disclosed. In one aspect, an apparatus includes a plurality of layers of an input winding wound around an energy transfer element core. An outer layer of the plurality... | 07/28/2009 |
| 7489218 | Inductor structure An inductor structure, including a winding turn layer and a shielding layer, is provided. The winding turn layer is disposed above a substrate. The winding turn layer has a plurality of turns, in which one of the turns is grounded. The shielding layer is disposed be... | 02/10/2009 |
| 7477120 | Transformer shielding An electrical transformer having a core with two core portions having a shield for electrically shielding one core portion from the other core portion. ... | 01/13/2009 |
| 7427801 | Integrated circuit transformer devices for on-chip millimeter-wave applications Methods are provided for building integrated circuit transformer devices having compact and optimized architectures for use in MMW (millimeter-wave) applications. The integrated circuit transformer devices have universal and scalable architectures that can be used a... | 09/23/2008 |
| 7382219 | Inductor structure An inductor structure including a first helix winding, a second helix winding, and a shielding structure is provided. The first helix winding has a first exterior wire connecting with a first interior wire in series. The second helix winding and the first helix wind... | 06/03/2008 |
| 7378929 | Method and apparatus for substantially reducing electrical displacement current flow between input and output circuits coupled to input and output windings of an energy transfer element An energy transfer element with substantially reduced electrical displacement current flow between an input circuit coupled to the energy transfer element input winding and an output circuit coupled to the energy transfer element output winding. In one aspect, an en... | 05/27/2008 |
| 7369026 | Method and apparatus for substantially reducing electrical displacement current flow between input and output circuits coupled to input and output windings of an energy transfer element An energy transfer element with substantially reduced electrical displacement current flow between an input circuit coupled to the energy transfer element input winding and an output circuit coupled to the energy transfer element output winding. In one aspect, an en... | 05/06/2008 |
| 7346979 | Method for winding an energy transfer element core Methods for winding energy transfer element cores are disclosed. In one aspect, a method includes winding a plurality of layers of an input winding around an energy transfer element core. One layer of the input winding is wound with a number of turns different than ... | 03/25/2008 |
| 7310595 | Numerically modeling inductive circuit elements A method of determining electrical parameters of inductive elements includes a novel technique of inverting an impedance matrix representative of said inductive circuit element. The method reduces model simulation time by a factor of 3000. In one embodiment, simulat... | 12/18/2007 |
| 7292126 | Low noise planar transformer An apparatus and method for reducing common mode noise capacitive coupling from a primary winding to a secondary winding in a transformer. In an embodiment, the primary winding has two terminals and a plurality of coil turns therebetween formed by a plurality of PCB... | 11/06/2007 |
| 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 the magnetic core. The coil includes a coaxial cable having a non-in... | 10/23/2007 |
| 7276999 | Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components An energy transfer element having windings. In one aspect, the energy transfer element includes a first winding wound around a core, the first winding has a first end and a second end. A second winding is wound around the core. The second winding has a first end and... | 10/02/2007 |
| 7276814 | Environmentally hardened ethernet switch A device for hardening an Ethernet switch is disclosed. The device provides cooling for the switch, and, suppresses electrical transients and electromagnetic interference, which could affect the power supply, and data transmission of the Ethernet switch. Using this ... | 10/02/2007 |
| 7262680 | Compact inductor with stacked via magnetic cores for integrated circuits An on-chip inductor device for Integrated Circuits utilizes coils on a plurality of metal layers of the IC with electrical connectors between the coils and a magnetic core for the inductor of stacked vias running between the coils. The magnetic core is made from a s... | 08/28/2007 |
| 7257881 | Method and structure for assembling electrical windings about a central member A method for assembling electrical windings about an axis, the windings being strips and wound in alternating strata with their widths parallel with the axis, includes the steps: (a) Winding a first-wound winding in a winding path about the axis establishing a first... | 08/21/2007 |
| 7256675 | Energy transfer apparatus for reducing conductivity electromagnetic interference and manufacturing method thereof An energy transfer apparatus is developed for reducing a conductivity electromagnetic interference and manufacturing method. The energy transfer apparatus comprises a core, an input winding, an output winding, a supply voltage and a supply winding. The supply windin... | 08/14/2007 |
| 7253714 | Power supply transformer with high efficiency A high-efficiency power supply transformer improved on its iron core which is a closed annular member made by continuous winding a silicon steel sheet and completed by sintering and fixing to keep directionality, after insulation processing with a heat shrinking wra... | 08/07/2007 |
| 7248139 | High-current electrical coil construction A high-current electrical coil includes a plurality of flat, electrically-conductive strips bent to define together a coil in which the electrically-conductive strips are disposed coaxially and extend longitudinally with respect to the longitudinal axis of the coil.... | 07/24/2007 |
| 7236076 | Electric component having a variable air gap effect An electric component having a variable air gap effect comprises two cores having a magnetic field air gap disposed at the connecting position of the two cores, and a coil wound around the cores and disposed at the installing position of the magnetic field air gap, ... | 06/26/2007 |
| 7221558 | Galvanically isolated delivery of power to high voltage circuits parts A high voltage switching apparatus delivers kV pulses to a load such as a magnetron. The switching apparatus comprises a switching stack surrounded by capacitors and both arranged within a housing. Lt power is supplied to the stack, e.g. for control electronics, by ... | 05/22/2007 |
| 7218198 | Coil form A coil form for forming an inductive element (10) includes a coil body (2) and at least one, for example three separating plates (3). The coil body (2) has an opening (4.1) and includes two portions, a coil portion (6) and a... | 05/15/2007 |
| 7196604 | Sensing apparatus and method There is described a position sensor comprising at least one planar substrate having formed thereon a magnetic field generator which comprises conductive tracks formed on at least two planes defined by the at least one planar substrate. An intermediate coupling elem... | 03/27/2007 |
| 7176778 | Magnetic core assembly having bobbin and mounting board thereof A magnetic core assembly with coils therein has a substantially spherical or ellipsoidal main body defining a hollow space therein. A column is disposed in the main body so as to be aligned with a center line of the main body. The main body is defined by a pair of s... | 02/13/2007 |
| 7170205 | Internal weight type vertical vibrator Disclosed is an internal weight type vertical vibrator including: a housing; a magnetic circuit unit placed in the internal space of the housing, and comprising a magnet perpendicularly placed and a yoke for fixedly receiving the magnet therein for generating a magn... | 01/30/2007 |
| 7142085 | Insulation and integrated heat sink for high frequency, low output voltage toroidal inductors and transformers Toroidal transformer and inductor configurations are described that allow for greater heat transfer away from internal device components. The inventive transformer allows for higher thermal and electrical efficiency, as well as for more efficient use of expensive co... | 11/28/2006 |
| 7123121 | Method and apparatus for substantially reducing electrical displacement current flow between input and output windings of an energy transfer element An energy transfer element with substantially reduced electrical displacement current flow between an input circuit coupled to the energy transfer element input winding and an output circuit coupled to the energy transfer element output winding. In one aspect, an en... | 10/17/2006 |
| 7119647 | Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components without requiring additional windings An energy transfer element having an energy transfer element input winding and an energy transfer element output winding. In one aspect, the energy transfer element input winding is capacitively coupled to the energy transfer element output winding. The energy trans... | 10/10/2006 |
| 7119646 | Apparatus and method for controlling the temperature of the core of a super-conducting transformer An apparatus for controlling the temperature of a core of a transformer is provided that includes a core, a shield surrounding the core, a cast formed between the core and the shield, and tubing positioned on the shield. The cast directs heat from the core to the sh... | 10/10/2006 |
| 7109836 | Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components without requiring additional windings An energy transfer element having an energy transfer element input winding and an energy transfer element output winding. In one aspect, the energy transfer element input winding is capacitively coupled to the energy transfer element output winding. The energy trans... | 09/19/2006 |
| 7109835 | 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, a coil wound around a portion of the magnetic core, and a semiconducting coating that encapsulates the co... | 09/19/2006 |
| 7084728 | Electrically decoupled integrated transformer having at least one grounded electric shield An integrated circuit, such as a radio frequency integrated circuit (RFIC), has a first layer bearing first metallization patterned for defining a first inductive coil, a second layer bearing second metallization patterned for defining a second inductive coil that o... | 08/01/2006 |
