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| Number | Title | Issue Date |
| 7394340 | Electromagnetic device, high-voltage generating device, and method for making the electromagnetic device An electromagnetic device and a high-voltage generating device which are thin and improved in the characteristics are provided in which a magnetic core is made of a cylindrical form of a ferrite material having a higher intrinsic resistance. A winding is provided by... | 07/01/2008 |
| 7382221 | Coil The differences in characteristics among parts or the fluctuations of the inductance value of a coil due to temperature variation is lessened by reducing the stray capacitance components induced among the layers of wound conductor, and size reduction and cost reduct... | 06/03/2008 |
| 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 |
| 7317371 | Linear variable differential transformer with complimentary step-winding secondary coils A linear variable differential transformer comprising a coil form; a first primary coil; an optional second primary coil; a first secondary coil; and a second secondary coil; wherein the windings of the secondary coils create complimentary and preferably uniform ste... | 01/08/2008 |
| 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 |
| 7236078 | Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components A method of transferring energy is disclosed. In one aspect, a method includes transferring energy from a first winding wound around a transformer core to a second winding wound around the transformer core. The first and second windings capacitively coupled to elect... | 06/26/2007 |
| 7233223 | Transformer winding A Winding for high voltage transformer having a predetermined number of spaced winding groups joined to form a single winding transformer, each spaced winding group being solenoid wound from a predetermined number of turns. A method of forming the winding and a tran... | 06/19/2007 |
| 7164338 | Method and apparatus for substantially reducing electrical earth displacement current flow generated by wound components 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... | 01/16/2007 |
| 7161123 | Induction heat fixing device An induction heat fixing device has coil portions with electric wires wound around the outer surface of a cylindrical main bobbin, grooves and flanges formed at both ends of the main bobbin. Further, plural ribs are formed in the main bobbin. The main bobbin is put ... | 01/09/2007 |
| 7148779 | Pulse type transformer with increased coupling coefficient through configuration of plural primary windings The present invention provides a low duty cycle, high current DC pulse type transformer with increased coupling coefficient between the primary and secondary windings by changing the proximity of the primary windings to the secondary windings through a plurality of ... | 12/12/2006 |
| 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 |
| 6924724 | Method and apparatus for transformer bandwidth enhancement A method and apparatus for transformer bandwidth enhancement is disclosed. In one embodiment, a transformer is provided for use in a high frequency communication environment. In one configuration, the transformer is configured with one or more compensation networks ... | 08/02/2005 |
| 6917271 | Cross current control for power converter systems and integrated magnetic choke assembly A cross current control system for multiple, parallel-coupled power converters includes common mode chokes, local cross current feedback controllers, and local converter controllers. Each common mode choke is coupled to a respective power converter. Each local cross... | 07/12/2005 |
| 6816053 | Circuit to mitigate transformer shorted turn A dual transformer design, each transformer having at least a primary winding and a secondary winding disposed on a core means, wherein the core means is circumferentially disposed about an inner housing means, and the whole structure located within an outer housing... | 11/09/2004 |
| 6583702 | Quadrupole mass spectrometer driver with higher signal levels Driving a quadrapole mass spectrometer includes obtaining an air core transformer with a primary and a secondary, matching the secondary to the mass spectrometer, and driving the primary based on first and second voltage levels. Driving of the primary is ... | 06/24/2003 |
| 6456182 | Common mode choke coil In a common mode choke coil, a closed magnetic circuit core (2) is divided in parallel with its magnetic circuit, and formed by superimposing together for integration a first divided magnetic core (2a), a second divided magnetic core (2b) and a third divi... | 09/24/2002 |
| 6417753 | Planar magnetic device without center core leg A planar magnetic device with vertically oriented coil windings having a cross-section of a core with a torroidally-shaped winding structure taken transverse to the plane of the winding structure having two adjacent "winding windows" where the coils are p... | 07/09/2002 |
| 6362012 | Structure of merged vertical capacitor inside spiral conductor for RF and mixed-signal applications A new method and structure is provided for the simultaneous creation of inductive and capacitive components in a monolithic substrate. The invention provides a method and structure whereby a vertical spiral inductor is created on the surface of a substrat... | 03/26/2002 |
| 6351202 | Stationary induction apparatus A stationary induction apparatus superior in insulating ability against a surge voltage includes a coil piece on a line end side surrounded by one electrostatic shield insulating layer. The coil piece and electrostatic shield insulating layer, together wi... | 02/26/2002 |
| 6236297 | Combinational inductor A combinational inductor, which can be constructed on a surface of a semiconductor substrate or an isolator, is provided. The combinational inductor includes several spiral inductors which are connected together in series. The spiral inductors can be cons... | 05/22/2001 |
| 6146526 | Variable resonance descaling decalcifier device connected to a forced sequential rephasing transformer A variable resonance descaling decalcifier device for the treatment of hard, very hard and low hardness water is provided. The device works effectively and efficiently for line frequencies in the range between 30 hertz and 400 hertz. The device includes a... | 11/14/2000 |
| 6121696 | EMI preventive AC line filter An EMI preventive AC line filter includes rack having a rectangular top open chamber and two substantially U-shaped support arms at two opposite ends of the top open chamber, a cylindrical winding holder formed of two symmetrical halves and mounted in the... | 09/19/2000 |
| 6100781 | High leakage inductance transformer A transformer, particularly for a voltage converter, has a primary winding having a predeterminable leakage inductance and at least one secondary winding magnetically coupled to the primary winding with a predetermined voltage-transformation ratio. The (p... | 08/08/2000 |
| 6084354 | Vehicle-lamp lighting-on device In the vehicle-lamp lighting-on device, a body case has a connection opening formed in the front end thereof. A lighting-on transformer is disposed within the body case. The transformer includes a core housing with an iron core and a coil bobbin with a se... | 07/04/2000 |
| 5877667 | On-chip transformers Various embodiments of on chip-transformers constructed in separate metal layers in an insulator that serves as a dielectric which is formed on a substrate such as a silicon substrate. Windings with currents flowing in a first direction are constructed in... | 03/02/1999 |
| 5770982 | Self isolating high frequency saturable reactor The present invention discloses a saturable reactor and a method for decoupling the interwinding capacitance from the frequency limitations of the reactor so that the equivalent electrical circuit of the saturable reactor comprises a variable inductor. Th... | 06/23/1998 |
| 5751205 | High-voltage transformer for a television receiver A transformer to achieve a precise amplitude for the operating voltages produced by the auxiliary windings, and such that the construction and production of the transformer are simplified. An auxiliary winding is split into a plurality of winding elements... | 05/12/1998 |
| 5731666 | Integrated-magnetic filter having a lossy shunt A two-winding, integrated-magnetic EMI filter provides damped common-mode and differential-mode inductances. The preferred embodiment of the filter has a magnetic core structure that incorporates a high-permeability C-core, a high-permeability I-core, and... | 03/24/1998 |
| 5702600 | Variable resonance descaling decalcifier device connected to a forced sequential rephasing transformer A variable resonance descaling decalcifier device for the treatment of hard, very hard and low hardness water is provided. The device works effectively and efficiently for line frequencies in the range between 30 hertz and 400 hertz. The device includes a... | 12/30/1997 |
| 5581224 | Choke coil for eliminating common mode noise and differential mode noise A choke coil which functions not only to eliminate common mode noise but also to eliminate differential mode noise. A couple of coils are wound around a circular first core and a second core which is disposed inside the circular first core. The second cor... | 12/03/1996 |
| 5579202 | Transformer device An air-core transformer device for supplying a high-frequency, pulsating DC voltage on the secondary side of the transformer. The primary side of the transformer has two windings which are bifilar-wound having a mutual phase relationship of 180°, where t... | 11/26/1996 |
| 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 preestablished design objectives.... | 10/15/1996 |
| 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.... | 10/15/1996 |
| 5525951 | Choke coil Two coils 3a, 3b are wound over adjacent portions of a first magnetic core having two closed magnetic circuits and a second magnetic core. The winding directions of the two coils are set so that the magnetomotive forces generated by both coils may cancel ... | 06/11/1996 |
| 5473299 | Horizontal linearity correction coil A horizontal linearity correction coil is used for a television receiver having a cathode ray tube of a wide deflection angle and has excellent productivity, quality and loading respectively. The ferrite magnetic core has the flanges at both ends and the ... | 12/05/1995 |
| 5473301 | Energy storage inductor apparatus A superconducting energy storage inductor having two D-shaped coils with their flat sides being adjacent and facing one another. The coils are restrained from moving relative to one another and are immersed in a cryogenic fluid. The coils are connected in... | 12/05/1995 |
| 5422619 | Common mode choke coil A common mode choke coil having a couple of cores shaped like U and four coils wound around legs of the cores. The cores having coils around their legs are butt-jointed at the end, and coils wound around each couple of butted legs cause magnetic fluxes in... | 06/06/1995 |
| 5319343 | Integrated magnetic inductor having series and common mode windings An integrated magnetic filter inductor having series and common mode windings includes a magnetic core (44) having a first leg (46), a second leg (48), and a third leg (50). The first leg (46) is connected to the second leg (48) with bridging structures (... | 06/07/1994 |
| 5304850 | Power line carrier frequency breaker A breaker apparatus for preventing a power line carrier frequency from moving along a power supply lead. The breaker comprises a core member with a first leg, a second leg and a third leg where each leg extends between a top section and a bottom section o... | 04/19/1994 |
| 5270656 | Biplanar RF coils for magnetic resonance imaging or spectroscopy A new geometry for a radio frequency coil design in which longitudinal conductors of the coil lie on two parallel planes. The currents in the conductors of one plane run in the opposite direction to those of the other plane. For the case of discrete condu... | 12/14/1993 |
