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Electric power conversion systems May archived by USPTO category 05/09

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
05/28/2009 > patent applications in patent subcategories. archived by USPTO category

20090135628 - Method and apparatus of capacitor divider based offline ac-dc converter: An AC/DC power converter has, as its first stage, a capacitor divider and rectifier and, as the second stage, a switch mode power supply. This configuration may be suitable for low power low voltage aerospace applications. The benefits of the circuit may include small reactive component size; near sinusoidal input... Agent: Honeywell International Inc.

20090135629 - Universal irrigation controller power supply: Described herein are systems, methods and apparatuses for providing power to an irrigation controller. In one implementation, an apparatus comprises an alternating current (AC) to direct current (DC) voltage converter configured to convert an input AC voltage into a DC voltage. An AC voltage generator is coupled to the AC... Agent: Fitch Even Tabin And Flannery

20090135630 - Converter and power converter that becomes it with the converter: A converter includes a converter circuit 1 having a plurality of bridge-connected semiconductor switching devices for converting AC power into DC power, a smoothing condenser connected in parallel to the DC side of the converter circuit and a current detector provided in a condenser circuit to control a condenser current... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090135631 - Method and apparatus of providing synchronous rectifying and regulation for power converters: A synchronous regulation circuit is provided to improve the efficiency of the power converter. A primary-side switching circuit generates a synchronous signal and a switching signal. The switching signal is used for soft switching a transformer. A secondary-side switching circuit is coupled to the output of the power converter to... Agent: Rosenberg, Klein & Lee

20090135632 - Step-down switching regulator capable of providing high-speed response with compact structure: In a step-down switching regulator, a switching element is a high-voltage NMOS transistor, turned on and off based on a control signal generated by a controller, and charges an inductor with an input voltage input to an input terminal. A first drive circuit is a low-voltage MOS transistor and turns... Agent: Cooper & Dunham, LLP

20090135633 - Ac adapter, electronic apparatus and power supply system: An AC adapter includes an AC/DC converter device for transforming an alternating-current power to a direct-current power, a power supply line that supplies the direct-current power converted by the AC/DC converter device to an electronic apparatus, and a memory for storing an AC adapter ID that identifies the AC adapter.... Agent: Ipusa, P.l.l.c

20090135634 - Synchronous rectifier drive circuit: A synchronous rectifier drive circuit includes a primary side and a secondary side. The primary side has a first coil winding, a first MOSFET, an auxiliary MOSFET, an auxiliary capacitor, and an input power source. The secondary side has a second coil winding, a DC voltage source, a second MOSFET,... Agent: Bacon & Thomas, PLLC

20090135635 - Voltage converter, usage of a voltage converter, method for converting an ac voltage into a dc voltage, and contactless chip card: The invention relates to a voltage converter comprising a rectification unit and a voltage regulation unit, wherein the input side of the voltage converter can have an AC voltage applied to it, the output side of the voltage converter can have a rectified voltage taken from it, and the voltage... Agent: Dickstein Shapiro LLP

20090135636 - Electric power conversion system: An electric power conversion system including a direct current power supply, plural main circuit switching devices bridge-connected to convert the direct current to alternating current, including free wheeling diodes connected in reverse parallel thereto, respectively, and a reverse voltage application circuit applying a reverse voltage smaller than the direct current... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

  
05/21/2009 > patent applications in patent subcategories. archived by USPTO category

20090129123 - Insulated power transfer device: An insulated transfer device with particular topology, comprising on the primary, a switched-mode voltage step-up circuit, with a step-up inductance (LB) and an active buffer stage (DT, MT, CT) supplying a peak voltage greater than the peak voltage supplied by the input voltage source (vE) and two pairs of controlled... Agent: Lowe Hauptman & Berner, LLP

20090129122 - Power supply device for arc apparatus: This power supply device for an arc apparatus includes: a three phase full wave rectification circuit in which a plurality of semiconductor switching elements are connected in inverse parallel with a plurality of rectification elements, and which rectifies a three phase AC power supply; an AC reactor which is connected... Agent: Mark D. Saralino (general) Renner, Otto, Boisselle & Sklar, LLP

20090129124 - Power supply for electrostatic precipitator: A high-voltage AC-DC converter is provided that converts alternating current into high-voltage direct current to be provided to a load, e.g. for use as an electrostatic precipitator. The converter includes at least one transformer, wherein the transformer includes at least one primary winding on the AC-side and at least two... Agent: Volpe And Koenig, P.C. Dept. Alstom

20090129125 - Synchronous regulation circuit: A primary-side switching circuit generates switching signals for switching a transformer. A secondary-side switching circuit is coupled to an output of the power converter to generate pulse signals in response to the switching signals and an output voltage of the power converter. Pulse signals are generated to rectify and regulate... Agent: J C Patents, Inc.

20090129126 - Single phase power supply for inductively coupled power transfer systems: An ICPT system has a single phase power supply which energises a conductive path (13) and has an inverter (5) to provide an alternating current at an operating frequency greater than the single phase utility supply frequency in the conductive path. The inverter modulates the amplitude of the alternating current... Agent: Richard F. Jaworski C/o Cooper & Dunham LLP

20090129127 - Methods and devices for inhibiting negative output current during start-up of a switch mode power supply: A method of controlling a freewheel switch during start-up of a switch mode power supply to inhibit negative output current. The switch mode power supply has alternating first and second intervals. The freewheel switch has an ON-time and an OFF-time. The method includes gradually increasing the ON-time of the freewheel... Agent: Harness, Dickey, & Pierce, P.l.c

20090129128 - Uninterruptible power supply apparatus: An uninterruptible power supply device connects a battery for power-outage backup to the output side of an AC/DC converter. An input monitoring circuit monitors alternating current input of the AC/DC converter and outputs an alternating current input monitor signal E1. An output monitoring circuit monitors the direct current output of... Agent: Kratz, Quintos & Hanson, LLP

20090129129 - Switching power supply device: A switching power supply device 100 includes: zener diodes ZD31 and ZD32 that become conducting when the voltage values of direct current voltages VO1 and VO2 are equal to or more than their zener voltage values, respectively; an overcurrent protection circuit 131 that makes a switching portion 12 stop generating... Agent: Morgan Lewis & Bockius LLP

20090129130 - Power converter: This invention relates to a power converter (1) comprising a converter input (3), a converter output (5), a power factor correction (PFC) stage (7) and an isolation stage (9). The PFC stage (7) is implemented by way of a buck PFC with low side drive and low side current sensing,... Agent: Texas Instruments Incorporated

20090129131 - Power generator for spectrometry: An RF power generator (10) for an induction coil (26) for exciting an inductively coupled plasma in a torch (27) for spectrometry. The generator (10) comprises a switching circuit (12) for alternately switching ON and OFF solid state switching devices (20) via gate drive voltages (22) for supplying RF power... Agent: Varian Inc. Legal Department

20090129132 - Control device for power converter: A control circuit for a power converter includes a voltage command unit that generates a voltage command signal, a voltage command compensation unit that compensates the voltage command signal to generate a compensatory voltage command signal, and a switching pattern arithmetic unit that generates a switching signal for each of... Agent: Leydig Voit & Mayer, Ltd

20090129133 - Devices and methods for converting alternating current (ac) power to direct current (dc) power: Methods, circuit designs, systems, and devices for the conversion of high voltage alternating current (AC) to low voltage, high current direct current (DC) are described. An exemplary apparatus includes a rectifier for receiving a high voltage AC line power input and for outputting a full wave, high voltage DC, a... Agent: Morris Manning Martin LLP

20090129134 - Controlled class-e dc ac converter: Converting a direct (DC) input voltage supplied by a DC source (2) to an alternating (AC) output voltage, comprising supplying the DC input voltage through an inductor (8) to a series connection of a resonant circuit (10, 12, 16, 18) and a load (6), switching the voltage supplied to the... Agent: Philips Intellectual Property & Standards

  
05/14/2009 > patent applications in patent subcategories. archived by USPTO category

20090122578 - Duty cycle dependent non-linear slope compensation for improved dynamic response: A two-stage converter including a buck converter and a DC-DC converter that receives power from the buck converter. The DC-DC converter generates an output voltage of the two-stage converter. A buck control circuit generates a drive signal for the buck converter. The drive signal is based on a first signal... Agent: Harness, Dickey & Pierce, P.L.C

20090122579 - Mixed flyback-forward topology converter with reduced ripple current: A mixed flyback-forward topology converter includes a transformer having a core, a primary winding, a first secondary winding and a second secondary winding. A switch connects power to the primary winding. A forward stage is connected to the first secondary winding. A flyback stage is connected to the second secondary... Agent: Honeywell International Inc.

20090122580 - Thyristor power control circuit: A thyristor power control circuit reduces EMI and maintains a holding current in the thyristor to prevent flickering at a load. The power control circuit includes a thyristor configured to receive an input AC voltage, and responsive to a gate pulse generates a modified AC voltage. A rectifier receives the... Agent: Stmicroelectronics, Inc.

20090122581 - Alternating current power supply device and integrated circuit for alternating current power supply device: An alternating current power supply device is provided with switch elements Q1, Q2 for converting direct current power from a direct current power supply Vin into alternating current power; a transformer T1 for converting the voltage of the alternating current power converted by the switch elements into other voltage; a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090122582 - Digitally controlled three-phase pfc rectifier: A robust decoder generates an output state from input signals related to the line-voltage signals of a three-phase power system, using a segment identification method based on zero-crossings derived from line-voltage difference signals. The robust decoder includes a basic decoder that provides a current output state based on the input... Agent: Haynes And Boone, LLPIPSection

20090122583 - Corona discharge apparatus: An apparatus for producing a corona discharge and a method for producing a corona discharge is described. The apparatus comprises a voltage controlled oscillator (VCO) for producing an audio signal at an adjustable frequency. The VCO is controlled by a ramp generator, and the ramp generator causes the voltage controlled... Agent: Matthew Loughran

20090122584 - Energy distributing circuit arrangement, including a dc/dc-converter: The present invention relates to a current distributing circuit arrangement (20, 20′), adapted for charging a plurality of arrays of co-ordinated energy supplying DC-networks (“A” (DC)), (“B” (DC)), wherein the circuit arrangement (20) includes a plurality of setup-related circuits (21, 22, 23, 24) each of which is adapted to a... Agent: Frost Brown Todd, LLC

20090122585 - Step-up/down switching regulator: An input voltage Vin is supplied to a first terminal of a control circuit via an inductor connected to outside, and an output capacitor is connected to a second terminal. A switching transistor is provided between the first terminal and ground, and a synchronous rectifier transistor is provided between the... Agent: Cantor Colburn, LLP

  
05/07/2009 > patent applications in patent subcategories. archived by USPTO category

20090116264 - Power supply circuit with voltage converting circuits and control method therefor: An exemplary power supply circuit (20) includes an input terminal (201), an output terminal (202), voltage converting circuits (23, 24), and a pulse width modulation circuit (22). The input terminal is capable of receiving a direct current voltage. The output terminal is capable of providing voltage to a load circuit.... Agent: Wei Te Chung Foxconn International, Inc.

20090116265 - Driving circuit for power switching device, driving method thereof, and switching power supply apparatus: A driving circuit according to the present invention is a driving circuit which drives the voltage control type switching device in the switching power supply apparatus and includes: a generation unit configured to generate a driving signal for turning on and off the voltage control type switching device, the driving... Agent: Greenblum & Bernstein, P.L.C

20090116266 - Paralleled power conditioning system with circulating current filter: This present invention relates to a paralleled power conditioning system with circulating current filter, comprising: an input terminal for receiving a input power; a plurality of power conditioning units; and a load. Each power conditioning unit includes: a DC/DC converter coupled to the input for receiving the input power so... Agent: Lowe Hauptman Ham & Berner, LLP

20090116267 - Driving system for switching power supply: A driving system for an electrical power conversion equipment includes a driving circuit for driving a switching device provided in the electrical power conversion equipment, and a driving capacity control circuit for controlling a driving capacity of the driving circuit. The driving capacity during a resonant operation of the electrical... Agent: Kanesaka Berner And Partners LLP

20090116268 - Power converting apparatus: A converter controllable in regenerative running mode, which is a power converting apparatus capable of suppressing harmonics without increasing the size of a reactor, and reducing power loss and electromagnetic noise. A power converter is configured by directly connecting AC sides of single-phase sub-converters having a DC voltage lower than... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090116269 - Power supply with reduced power consumption when a load is disconnected from the power supply: Detection and control circuitry are added to a conventional power supply to detect when a load, such as a portable electronic device, has been disconnected from the power supply and, when disconnected, interrupt a current path to the primary windings of a transformer within the power supply to substantially reduce... Agent: Law Office Of Mark C. Pickering

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