Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems August inventions list 08/10

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.
08/26/2010 > patent applications in patent subcategories.

20100214806 - Power conversion circuit for decentralizing input current: A power conversion circuit for decentralizing input current includes a capacitor, a first inductor, a first switching circuit, a first discharging circuit, a second inductor, a second switching circuit, a second discharging circuit, and a control circuit. Under control of the control circuit, the first switching circuit and the second... Agent: Kirton And Mcconkie

20100214807 - Internal high-voltage current source in an ac/dc power converter: AC/DC power converters having an under voltage lockout circuit with first and second thresholds and associated methods of operation are disclosed herein. In one embodiment, the first threshold is greater than the second threshold. The under voltage lockout circuit is configured to enable a current source to charge the capacitor... Agent: Perkins Coie LLP Patent-sea

20100214808 - Power conditioning unit: The present invention relates to a power conditioning unit for delivering power from a dc power source to an ac output, particularly ac voltages greater than 50 volts, either for connecting directly to a grid utility supply, or for powering mains devices independent from the mains utility supply. We describe... Agent: Tarolli, Sundheim, Covell & Tummino L.L.P.

20100214809 - Pwm rectifier: Disclosed is a PWM rectifier in which switching losses in a semiconductor device are reduced without degrading the response of a control system. In a PWM overmodulation region, the modulation scheme is set to a three-phase modulation scheme. In other regions, a switchover condition such as the amplitude of an... Agent: Lowe Hauptman Ham & Berner, LLP

20100214810 - Push-pull inverter: A push-pull inverter allows a power supply unit to supply an input voltage to two primary windings of a transformer, and allows MOSFETs (Metal Oxide Semiconductor Field Effect Transistors) to drive the transformer in push-pull mode so as to increase the input voltage supplied from the power supply unit and... Agent: Crowell & Moring LLP Intellectual Property Group

08/19/2010 > patent applications in patent subcategories.

20100208498 - Ultra-low voltage boost circuit: A circuit for boosting the voltage from a very low level voltage source to a higher level voltage output utilizing self-oscillation.... Agent: David C. Nemir

20100208499 - Standby operation of a resonant power converter: A method of operating a resonant power supply in standby mode is disclosed, in which the switching period of the power supply is longer than the resonance period. The power converter is operated in normal mode for a significant fraction of one resonance period. Efficient operation is maintained, despite the... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20100208500 - Detecting light load conditions and improving light load efficiency in a switching power converter: A switching power converter detects low load conditions based on the ratio of a first peak current value for peak current switching in constant voltage regulation mode to a second peak current value for peak current switching in constant current regulation mode. The power supply load is considered to have... Agent: Fenwick & West LLP

20100208501 - Power transfer management for local power sources of a grid-tied load: A power transfer system provides power factor conditioning of the generated power. Power is received from a local power source, converted to usable AC power, and the power factor is conditioned to a desired value. The desired value may be a power factor at or near unity, or the desired... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100208502 - Switching power source device and drive method thereof: A switching power source device includes current control pulse generating means configured of a target value setting module, which outputs a changeable value which is a predetermined target value relating to a control of an output current, a computing module, which carries out a computing process relating to the control... Agent: Frishauf, Holtz, Goodman & Chick, PC

08/12/2010 > patent applications in patent subcategories.

20100202158 - Electric power conversion circuit having transfer gain variable by pulse-width modulation: The present invention discloses a single stage DC to DC electric power conversation circuit which has a transfer gain variable by pulse-width modulation over a continuum from zero to beyond unity. Conversion efficiency of the circuit is optimal when the transfer gain is set to its middle range, where a... Agent: Rosenberg, Klein & Lee

20100202159 - Power converter system with pulsed power transfer: Electronic devices such as portable electronic devices are provided. Power converters are provided that convert alternating-current power into direct-current power for powering the electronic devices. A power converter may rectify an alternating current line signal to produce a rectified alternating current signal having peaks and valleys. The power converter may... Agent: Treyz Law Group

20100202160 - Power converter transformer for suppressing conduction emi and power supply having its transformer: In accordance with the present invention, a power converter transformer for suppressing conduction EMI(ElectroMagnetic Interference) includes a primary winding positioned at a primary side; a secondary winding positioned at a second side and coupled with the primary winding; a parasitic capacitor connected between one end of the primary winding and... Agent: Lowe Hauptman Ham & Berner, LLP

20100202161 - Power converter with automatic mode switching: A power converter is provided that has an alternating-current (AC) to direct-current (DC) switched-mode power converter circuit that converts alternating-current power into direct-current power for powering an attached electronic device. Power can be conserved by automatically placing the power converter circuit in a low-power standby mode of operation whenever the... Agent: Treyz Law Group

20100202162 - Asymmetrical resonant power converters: A resonant power converter is provided and includes a capacitor, an inductive device, a first transistor, a second transistor, and a control circuit. The capacitor and the inductive device develop a resonant tank. The first transistor and the second transistor are coupled to switch the resonant tank. The control circuit... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100202163 - Flyback power converters: A dual-switch flyback power converter includes a control circuit to generate a switching signal. A high-side driving circuit includes a pulse generation circuit. The pulse generation circuit generates a pulse-on signal and a pulse-off signal to control two transistors in response to the switching signal. The two transistors further respectively... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100202164 - Switching power converter for suppressing common mode noise: The present invention discloses a switching power converter with low common mode noise. The switching power converter comprises at least a switch with at least a terminal wherein said switch turning on and off alternatively which generates a plurality of noise voltages, and the noise voltage having a jump point... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100202165 - Dynamic drive of switching transistor of switching power converter: A switching power converter comprises a transformer (110), a switch (108) coupled to the transformer (110), and a switch controller (200) coupled to the switch (108) for generating a switch drive signal (207) to turn on or off the switch (108). The drive current of the switch drive signal (207)... Agent: Fenwick & West LLP

20100202166 - Energy saving lumens settable device for fluorescent lamps: A circuit to supply an AC voltage to a fluorescent lamp load from an AC supply converts the supply to DC, boosts the voltage in a converter and then drives an inverter from the smoothed boosted voltage in such a manner that the inverter will not start if the load... Agent: Young & Thompson

20100202167 - Soft switching power converter with a variable switching frequency for improving operation and efficiency: A power converter according to the present invention comprises a resonant tank. The resonant tank is switched by a plurality of transistors. A control circuit generates a plurality of switching signals to control the transistors. The pulse widths of the switching signals are modulated for regulating an output voltage of... Agent: Rosenberg, Klein & Lee

20100202168 - Power supply circuit: The present invention provides a power supply circuit without current transformers. A voltage increasing chopping is is applied to an alternating current input between a common line and another input terminal under control of a control circuit and a voltage increasing chopper circuit and filter, to obtain voltage-increased direct-current voltage... Agent: Jordan And Hamburg LLP

20100202169 - Protection and clamp circuit for power factor correction controller: A controller generates a drive signal for a converter circuit that includes an active component (i.e., transistor) that is selectively controlled to convert a rectified input to direct current (DC) output. The controller employs an outer feedback loop (based on monitored output voltage of the converter circuit), an inner feedback... Agent: Kinney & Lange, P.A.

20100202170 - Soft-burst circuit for switched-mode power supplies: A switched-mode power supply includes a soft-burst circuit to minimize or prevent distracting audible noise. The power supply includes a control circuit for controlling switching of an output transistor to deliver a regulated output voltage to a load. The control circuit adjusts the operating frequency of the power supply based... Agent: Okamoto & Benedicto, LLP

20100202171 - Portable power supply for laboratory equipment: A portable power supply for controlling laboratory experiments, the power supply includes input terminals that receive control signals and power terminals that supply power to laboratory devices. The power supply enables power levels of standard laboratory equipment to be automatically controlled.... Agent: Oliff & Berridge, PLC

20100202172 - H-bridge control circuit: An H-bridge control circuit comprises an input stage, comparator stage, inverter stage. The operation of the H-bridge can be controlled by a single analog input signal provided by a feedback stage. Shoot-through protection is provided for the H-bridge circuit through the inclusion of a dead gap determined by inputs to... Agent: Intellectual Property Group Fredrikson & Byron, P.A.

20100202174 - Ac-dc converter circuit and power supply: An AC-DC converter and a power supply are described.... Agent: Kathy Manke Avago Technologies Limited

20100202173 - Circuit arrangement comprising a voltage transformer and associated method: A method for operating a circuit arrangement is provided. The method may include coupling a second connection of a control device to a connection that provides an alternating signal during operation of the circuit arrangement; in the control device: generating a trigger signal for the control electrode of the mode... Agent: Viering, Jentschura & Partner - Osr

20100202175 - Method and apparatus to reduce audio frequencies in a switching power supply: A controller for use in a power supply regulator is disclosed. One controller includes a feedback circuit coupled to generate a feedback current signal that corresponds to a peak switching current in response to a sense signal from a power supply regulator output. A comparator is coupled to compare the... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100202176 - Method for operating an electronically controlled inverter: A method for operating an electronically controlled inverter and an inverter are provided. The inverter includes semiconductor switches, inductors and a first capacitor. The semiconductor switches of the inverter are controlled by a microcontroller alternately as elements of a buck converter and as elements of an inverting Cuk converter with... Agent: Siemens Corporation Intellectual Property Department

20100202177 - Voltage link control of a dc-ac boost converter system: Systems and methods are disclosed for a DC boost converter. The systems and methods combine operation of an inductor with the input capacitor of a DC/AC inverter via a switch configuration to power the DC/AC inverter. The switch configuration is controlled by a plurality of control signals generated by a... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

08/05/2010 > patent applications in patent subcategories.

20100195352 - Power supply apparatus: The power supply apparatus includes a first control part that controls a switching operation of a first converter, a second control part that controls a switching operation of a second converter, a zero crossing circuit that outputs a zero crossing signal of a voltage to be input; and a voltage... Agent: Fitzpatrick Cella Harper & Scinto

20100195353 - Switching power supply apparatus: A switching power supply apparatus includes a transformer or an inductor, a switching element connected to the transformer or the inductor and configured to perform switching of an input power supply, and a switching control circuit including a digital control circuit configured to sample voltage values and/or current values and... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20100195354 - Full-range-duty pwm signal generation method, apparatus, and system using same: The present invention discloses a full-range-duty PWM signal generation method for an AC-to-DC power conversion, comprising the steps of: generating a saw-tooth signal with a predetermined valley voltage; generating a reference signal according to at least one of a current feedback signal and a voltage feedback signal; and generating a... Agent: Sinorica, LLC

20100195355 - Switching power converter with load impedance detection: In a switching power converter, no-load condition is detected based on a variety of parameters including the output current, primary current, transformer reset time, and switching period. Once the no-load condition is detected, the switching power converter enters stand-by mode, in which the reference voltage corresponding to the target regulated... Agent: Fenwick & West LLP

20100195356 - Electronic device and external power supply device control method applicable thereto: An electronic device and an external power supply device control method applicable to the electronic device are disclosed. The electronic device is electrically connected to an external power supply device that is able to switch between an ON state and an OFF state. The electronic device includes a switch module... Agent: Wpat, PC

20100195357 - Method and apparatus for determining a corrected monitoring voltage: A method and apparatus for determining a corrected monitoring voltage, at least a portion of the method being performed by a computing system comprising at least one processor. The method comprises generating power at a first location; monitoring the generated power by measuring a first voltage proximate the first location;... Agent: Raymond R. Moser Jr., Esq. MoserIPLaw Group

20100195358 - Voltage regulator and ac-dc converter: A voltage regulator is provided. An input node receives an input voltage. An output node provides a supply voltage. A first transistor is coupled between the input node and a node. A first resistor is coupled between the input node and a gate of the first transistor. A second transistor... Agent: Quintero Law Office, PC

20100195359 - Power supply circuit and information processing apparatus: A power supply circuit includes a rectifying unit for outputting a rectified input voltage, a transformer for receiving the voltage and outputting an induced voltage based on the input voltage, a first smoothing unit for smoothing the induced voltage to output a first output voltage, a detecting unit for outputting... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20100195360 - Method and system for polarity independent step-up converter capable of operating under ultra-low input voltage condition: Apparatus and method for a polarity independent step-up converter capable of operating with ultra low input voltage. The step-up converter as disclosed herein receives an input source having a variable polarity and includes a first core circuit coupled to the input source and an output of the step-up converter and... Agent: Mcdermott Will & Emery LLP

20100195361 - Photovoltaic power plant with distributed dc-to-dc power converters: A solar photovoltaic plant is disclosed where a number of distributed DC-to-DC converters are used in conjunction with a central DC-to-AC converter. Each DC-to-DC converter is dedicated to a portion of the photovoltaic array and tracks the maximum power point voltage thereof. The DC-to-DC converters also boost the photovoltaic voltage... Agent: Michael J. Stem

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