Class 336/173 - INTERLINKED COILS OR WINDINGS (E.G., CURRENT TRANSFORMER)

Subclass of Class 336 - Inductor devices
Definition: Inductor devices in which two or more coils or windings
No. of patents: 39
Last issue date: 01/11/2011

Number	Title	Issue Date
7868725	Power inductor with reduced DC current saturation A conducting crossover structure for power inductors comprises a first lead frame array that includes a first feed strip, a first lead frames including first and second terminals, and first tab portions that releasably connect said first lead frames to said first fe...	01/11/2011
7365501	Inverter transformer An inverter transformer includes a coil unit including a bobbin and a plurality of windings, and a transformer core unit. The bobbin is formed with a core-receiving compartment, and includes first, second and third coil winding portions. The windings are wound aroun...	04/29/2008
7307502	Power inductor with reduced DC current saturation A power inductor includes a first magnetic core material having first and second ends. An inner cavity is arranged in the first magnetic core material that extends from the first end to the second end. First and second notches are arranged in the first magnetic core...	12/11/2007
7276873	Fault-handling system for electric power steering system A fault-handling system for a 2-phase motor. When an electric motor is used for power assist in a steering system in a vehicle, malfunctions can cause loss of assist, and detectable vibration. The invention utilizes a 2-phase motor in such an application, and implem...	10/02/2007
7218197	Power inductor with reduced DC current saturation A power inductor comprises a first magnetic core material having first and second ends. An inner cavity is arranged in the first magnetic core material and extends from the first end to the second end. A crossover conductor structure includes a first lead frame that...	05/15/2007
7215233	Inductive coupler for power line communications There is provided an inductive coupler for coupling a signal to a conductor. The inductive coupler includes (a) a magnetic core having an aperture through which the conductor is routed, (b) a winding wound around a portion of the magnetic core, where the signal is c...	05/08/2007
7057485	Current transformer for a compensating current sensor Addressed is a current transformer comprising a primary conductor, a secondary winding and a soft-magnetic core, whereby the primary conductor and secondary winding are electrically insulated from one another and are magnetically intercoupled via the core. In additi...	06/06/2006
7035120	Driving circuit employing synchronous rectifier circuit An example synchronous rectifier circuit includes a transformer having a primary winding and a secondary winding which are insulated from each other; a main switch provided at a primary side of the circuit, which includes the primary winding; a rectifying FET provid...	04/25/2006
7002440	Compact low cost current sensor and current transformer core for circuit breakers having improved dynamic range A circuit breaker having a housing, a pair of separable contacts, a current sensor strap in electrical communication with the contacts, an operating mechanism for operating the contacts, an electronic trip unit in operable communication with the sensor strap and the...	02/21/2006
6965291	Circuit component and transformer device with controllable impedance and with systems equipped with such devices A circuit component (L1) with controllable impedance, includes a body (1) of a magnetizable material, a main winding (A1) wound round the body (1) about a first axis and a control winding (A2) wound round the body (1) about ...	11/15/2005
6940732	Synchronous rectifier circuit There is provided a synchronous rectifier circuit that makes it possible to secure sufficient driving voltage for the rectifier switch regardless of the voltage of the secondary winding. In this synchronous rectifier circuit, the primary winding is insulated from th...	09/06/2005
6850141	Integrated circuit inductors The invention relates to an inductor comprising a plurality of interconnected conductive segments interwoven with a substrate. The inductance of the inductor is increased through the use of coatings and films of ferromagnetic materials such as magnetic metals, alloy...	02/01/2005
6844799	Compact low cost current sensor and current transformer core having improved dynamic range A current sensor and current transformer for monitoring electrical current is provided with a magnetic core having a mixture of magnetic materials to provide a low cost design in a compact configuration with an expanded dynamic range. The mixed material core can be ...	01/18/2005
6825747	Integrated circuit inductors The invention relates to an inductor comprising a plurality of interconnected conductive segments interwoven with a substrate. The inductance of the inductor is increased through the use of coatings and films of ferromagnetic materials such as magnetic metals, alloy...	11/30/2004
6822545	Integrated circuit inductors The invention relates to an inductor comprising a plurality of interconnected conductive segments interwoven with a substrate. The inductance of the inductor is increased through the use of coatings and films of ferromagnetic materials such as magnetic metals, alloy...	11/23/2004
6817087	Integrated circuit inductors The invention relates to an inductor comprising a plurality of interconnected conductive segments interwoven with a substrate. The inductance of the inductor is increased through the use of coatings and films of ferromagnetic materials such as magnetic metals, alloy...	11/16/2004
6803847	Segmented induction electric machine with interdigitated disk-type rotor and stator construction The present invention relates to an A. C. electrical machine comprising: a plurality of disk-shaped annular stator elements stacked and spaced equidistantly from each other and mounted on a frame; a plurality of disk-shaped rotor elements mounted on a rotational axi...	10/12/2004
6753750	1.2 kV class porcelain bushing withstanding 45 kV standard lighting impulse voltage A porcelain bushing for transformers withstanding impulse voltages rated at 45 kV and 1.2/50 μs without external flashover, having a creepage to arcing distance ratio of 1.05 to 1.24. The bushing includes a body constituted by a flange fitted with a gasket seat gro...	06/22/2004
6686823	Inductive power transmission and distribution apparatus using a coaxial transformer A coaxial inductive power transfer and distribution apparatus includes a stationary primary conductor and a mobile secondary coil magnetically coupled together to provide for inductive power transfer therebetween. A return conductor that is stationary is ...	02/03/2004
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 insertion slots. The metal adaptor is fixed with a phase-to...	01/20/2004
6661324	Voltage and current sensor A voltage and current sensor comprised of a plurality of surface mounted inductors serially connected around the circumference of a current carrying conductor and a plurality of surface mounted resistors each connected in parallel with an inductor wherein...	12/09/2003
6639770	Current transformer and method for correcting asymmetries therein A current transformer for a ground fault circuit breaker used on a circuit having at least one line conductor and a neutral conductor includes a toroidal core having a circular opening defining a center point and a multi-turn winding wound on the core. A ...	10/28/2003
6563411	Current transformer with direct current tolerance A current transformer for alternating current with direct current components is proposed, consisting of at least one transformer core with a primary winding and at least one secondary winding to which a burden resistor is connected in parallel and termina...	05/13/2003
6424247	Inverter transformer In an inverter transformer, since a plurality of secondary windings 2, 2 are wound around a plurality of bar-shaped magnetic cores 3, 3 which are formed independently of each other and electromagnetically coupled to a primary winding 1 with equivalent cha...	07/23/2002
6414579	Current transformer and method for correcting asymmetries therein A current transformer for a ground fault circuit breaker used on a circuit having at least one line conductor and a neutral conductor includes a toroidal core having a circular opening defining a center point and a multi-turn winding wound on the core. A ...	07/02/2002
6014072	Current transformer for gas-insulated switchgear The present invention relates to a gas-insulated current transformer of simple structure for a single-phase or multi-phase switchgear, which transformer can be made in various dimensions and with magnetic cores of various lengths. The transformer comprise...	01/11/2000
5982264	High frequency sheet-type transformer A high frequency sheet-type transformer coil structure capable of minimizing eddy current generated by parallel winding and raising power conversion efficiency when the high frequency sheet-type transformer uses sheet-like coils arranged such that a coil ...	11/09/1999
5906768	Ferrite magnetic material, and ferrite core A ferrite core of the invention is useful for reducing the power loss of Ni--Cu--Zn ferrites, and so for particle accelerators, and power transformers. This core comprises a ferrite magnetic material containing as major components 47 to 50 mol % of iron o...	05/25/1999
5883392	Apparatus comprising inductive and/or power transfer and/or voltage multiplication components Apparatus for irradiating a substrate is compact, transportable, rugged, high powered, and highly efficient. It includes an improved high voltage inductor (1-230), an improved power transfer apparatus (230-294), an improved voltage multiplication apparatu...	03/16/1999
5777538	Apparatus comprising inductive and/or power transfer and/or multiplication components Apparatus for irradiating a substrate is compact, transportable, rugged, high powered, and highly efficient. It includes an improved high voltage inductor (1-230), an improved power transfer apparatus (230-294), an improved voltage multiplication apparatu...	07/07/1998
5774035	Current transformer for load switch A current transformer for a load switch which has an interior construction tightly engaged with a main bushing therein, allows a voltage in a cable to be detected by forming an engaging hole, communicated with a conductive socket of the main bushing, on a...	06/30/1998
5719546	Inductive coupler for transferring electrical power An inductive coupler forming a closed magnetic circuit by mating a primary core assembly having a primary winding and a secondary core assembly having a secondary winding for transferring electrical power from the primary winding to the secondary winding ...	02/17/1998
5594332	Alternating current detector A method of sensing alternating current in a cable having at least a pair of longitudinal conductors each of the pair carrying a current equal or unequal in absolute value to the other in mutually opposite directions, is comprised of disposing a coil with...	01/14/1997
5446311	High-Q inductors in silicon technology without expensive metalization A monolithic high-Q inductor structure is formed with multiple metalization levels in a conventional integrated circuit technology in which inductor turns utilize these multiple levels to reduce the inductor resistance. Inductors with Q values above five ...	08/29/1995
4574222	Ballast circuit for multiple parallel negative impedance loads A current-balancing transformer is provided to supply plural parallel-connected electrical loads, especially loads such as gas discharge lamps which exhibit negative impedance and/or non-linear impedance over at least a part of their normal operating rang...	03/04/1986
4513274	Current transformer for measuring instruments The current transformer for instruments for measuring electric currents includes a magnetic core that has two cores and an inductive current divider with three parallel current paths. The current dividers form, together with cores, two current transformer...	04/23/1985
4408175	Self centering current responsive pickup means A molded plastic housing mounts a coil adjacent to a conductor to act as a current responsive pickup means. The mounting arrangement for the pickup coil uses no magnetic circuit and is adapted to self-center the structure on conductors of varying sizes wi...	10/04/1983
4087701	Transformer cascade for powering electronics on high voltage transmission lines Power for electronic instrumentation on high voltage transmission lines is provided through a high efficiency cascade of ferrite core transformers operating in the superaudio range. An array of tuning capacitors is provided to neutralize the leakage induc...	05/02/1978
4032837	Current transformer A current transformer comprising a tubular main insulator, a number of first windings arranged around the main insulator, and a number of second windings arranged inside the main insulator. The second windings are arranged opposite their corresponding fir...	06/28/1977

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Class 336/173 - INTERLINKED COILS OR WINDINGS (E.G., CURRENT TRANSFORMER)