Electric power conversion systems inventions 12/07

20070297197 - High efficiency switching power converter: A switching power converter having a first and a second transistor are connected in series with the transformer to provide higher switching efficiency. A charge pump circuit is coupled to a drive circuit to provide a power source for driving the first transistor. A third transistor is connected between the... Agent: Jianq Chyun Intellectual Property Office

20070297198 - Synchronous voltage modulation circuit for resonant power converter: A synchronous voltage modulation circuit for resonance power converter has a resonance current extracting unit and at least one duty cycle modulation circuit. The resonance current extracting unit extracts the resonance current of the transformer for each duty cycle modulation circuit. The duty cycle modulation circuit controls the conduction period... Agent: Cooper & Dunham, LLP

20070297201 - Magnetic interface circuit: A magnetic interface circuit (100) includes a pair of channels (101, 102) and an absorb network (3). Each channel includes a 3-wire common mode choke (2) having a middle tap (21), and an isolation transformer (1) connected with the 3-wire common mode choke. The isolation transformer has a primary winding... Agent: Wei Te Chung Foxconn International, Inc.

20070297202 - Self powered supply for power converter switch driver: Self-powered supplies are presented for powering a power converter switch driver with power obtained from an associated snubber circuit, in which a supply circuit and a snubber circuit are connected in a series path across the switch terminals with the supply circuit receiving electrical power from the snubber and providing... Agent: Rockwell Automation, Inc./fay

20070297199 - Multi-resonance converter: In a multi-resonance converter for converting a first DC voltage into a second DC voltage, wherein the output of a half-bridge comprising semiconductor switches is connected through a resonance capacitor to the primary winding of a transformer and the secondary winding of the transformer, together with rectifier elements, an output... Agent: Philips Intellectual Property & Standards

20070297200 - Power supply for electrostatic precipitator: The disclosure pertains to a high-voltage AC-DC converter converting alternating input current (1-3) into high-voltage direct current to be provided to a load (12), e.g. for use of powering an electrostatic precipitator. Said converter comprises a unit (22) for the conversion of the alternating (AC) input current into high frequency... Agent: Buchanan, Ingersoll & Rooney PC

20070297203 - Charge pump circuit and power supply circuit: A charge pump circuit is provided for generating a voltage (1+1/n) times as high as a supply voltage. The charge pump circuit eliminates the need for diodes for preventing a current from flowing back from a high potential side of capacitors to prevent a reduction in the voltage due to... Agent: Dickstein Shapiro LLP

20070297204 - Power converter: A power converter includes a power generating unit, at least two switching units, at least two transformers and a power outputting unit. The power generating unit generates a power signal. The switching units are electrically connected to the power generating unit, and the switching units respectively generate at least one... Agent: Birch Stewart Kolasch & Birch

20070297205 - Driving circuit for switching dc power: A driving circuit for switching DC power includes a DC power generator, a bridge circuit, a control signal generator, and a clamping module. The bridge circuit includes a plurality of legs each including an up-bridge switch and a down-bridge switch. The clamping circuit is coupled to each up-bridge switch of... Agent: North America Intellectual Property Corporation

20070297206 - Apparatus for accomodating a plurality of individual inverters: The invention is directed to an apparatus (1) for accommodating a plurality of individual inverters (2), comprising a rack, the individual inverters (2) being removably mountable to the side elements of said rack, said rack having at least one terminal block (10) for receiving cables for current supply and evacuation.... Agent: Pyle & Piontek Attn: Thomas R. Vigil

20070291514 - Dc-dc converter for low voltage power source: A power conversion unit and method for converting DC power. The power conversion unit includes a self-oscillating device configured to convert a DC voltage into a self-oscillating alternating current AC signal, a transformer connected to the self-oscillating device and configured to transform the self-oscillating AC signal into a transformed AC... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20070291515 - Half-bridge resonant converter: A half-bridge resonant converter includes: a primary winding; a secondary winding having a first and a second end and a central point; a first electronic switch; a second electronic switch; a first power-storage element; a second power-storage element; and a load having a first and a second end. Wherein, the... Agent: Birch Stewart Kolasch & Birch

20070291516 - Switching power supply for reducing external parts for overcurrent protection: A switching power supply has a switching device connected via a primary winding of a transformer to DC input voltage; a circuit for rectifying voltage at a secondary winding of the transformer, and outputting an output signal; and a control circuit for controlling on/off states of the switching device. The... Agent: Wood, Herron & Evans, LLP

20070291517 - Power supply circuit with positive feedback circuit: An power supply circuit (2) includes a bridge rectifier circuit (22); a control circuit (23) having a switch circuit (231) and a pulse width modulation circuit (232); a high frequency transformer (24); at least one commutating and filter circuit (25); and a positive feedback circuit (29). An alternating current voltage... Agent: Wei Te Chung Foxconn International, Inc.

20070291518 - Converter having a damping control circuit: A converter (34) includes a control device (6) connected at its output to a pulse width modulator (8), which is connected on the output side to control inputs of a load-side inverter (10), and a current measuring device (4), which is connected on the input side to two terminals of... Agent: Henry M Feiereisen, LLC

20070291519 - Dual input, hot swappable dual redundant, enhanced n‘ac to dc power system: The inventive system uses modular N+1 bulk power supplies to power a computer system. Thus, the individual BPSs may be replaced while the system is on-line. Each BPS is split into two halves, with each halve being run by a separate power grid. This means that if one of the... Agent: Hewlett Packard Company

20070291520 - Multi-phase converter with frequency and phase timing control: A multi-phase converter comprising a plurality of switching circuits each controlled by a phase controller and each providing a switched output voltage to an output node of the converter and wherein each switching circuit under control of the phase controller sequentially provides a switched output voltage to the output node... Agent: Ostrolenk Faber Gerb & Soffen

20070291521 - Dc/ac inverter with adjustable gate-source voltage: The present invention is a DC/AC inverter for converting a DC supply voltage signal to an AC voltage signal. The DC/AC inverter includes a drive circuit, a switch circuit, a transformer circuit and an auxiliary circuit. The drive circuit provides a first drive signal and a second drive signal. The... Agent: Wang Law Firm, Inc.

20070291522 - Interconnection inverter device: An interconnection inverter device includes a pair of capacitors connected in series to a pair of direct-current buses each connecting a direct-current power supply and the inverter; an opening/closing unit connected to either one of the pair of direct-current buses; voltage monitor units that monitor terminal voltages of the pair... Agent: Buchanan, Ingersoll & Rooney PC

20070291523 - Controller ic, dc-ac conversion apparatus, and parallel running system of dc-ac conversion apparatuses: A DC power source voltage is supplied to a center tap of a primary winding, and first and second semiconductor switches alternately turned on are disposed between each of both ends of the primary winding and a common potential point, and a current flowing through a load is fed back... Agent: Morgan Lewis & Bockius LLP

20070285950 - Safety controller and input-output unit therefor: A safety controller of building block type has an array of a plurality of IO units each including IO circuits and a single IO unifying unit connectable to these IO units. The IO unifying unit has an IO power-receiving terminal for receiving power from an external IO power source and... Agent: Beyer Weaver LLP

20070285951 - Switching circuit and a method of driving a load: A switching circuit includes (a) a bridge circuit (122) with a first output (266) to drive a load (130); and (b) a driver circuit (120) comprising a pair of cascode amplifiers (250, 251) receiving complementary inputs and a bias voltage, wherein the driver circuit (120) is electrically coupled to the... Agent: Walter P. Opaska Bryan Cave LLP

20070285953 - Quasi-resonant converter and controlling method thereof: The present invention relates to a quasi-resonant converter. In the quasi-resonant converter according to the present invention, a predetermined first period and a second period following to the first period are set. In the second period, a switch is turned on at a time point where voltages at both ends... Agent: Sidley Austin LLP

20070285952 - Resonant converter and voltage stabilizing method thereof: A resonant converter and voltage stabilizing method thereof are provided. The resonant converter includes a converting stage circuit, a diode-rectifying stage circuit, a filter and load stage circuit, a logic circuit, a driving circuit, and an energy-recycling circuit. The method includes steps of recycling an energy from the filter and... Agent: Volpe And Koenig, P.C.

20070285954 - Regulator control circuit and method: Switching devices control the rectification and flow of alternating current power from a source such as an alternator to a load such as a battery in response to both the voltage of the battery and a minimum selected time period that is selected to eliminate or reduce an imbalance between... Agent: Carl M. Napolitano, Ph.d. Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.

20070285955 - Parallel operating system of dc-ac converters and controller ic therefor: A multiplicity of synchronized inverters for driving a multiplicity of loads such as CCFLs that require high ac voltages are arranged in close proximity of the respective loads and controlled in phase. A frequency determination capacitor and a frequency determination resistor are connected to one of the inverters to generate... Agent: Hogan & Hartson L.L.P.

20070285956 - Power supply control loop with multiple leveling modes: A method and apparatus for controlling a power supply. The system includes a power supply and a controller for outputting a command signal to regulate the operation of the power supply. The controller determines the command signal based on at least one error signal which is selected from a plurality... Agent: Proskauer Rose LLP

20070279949 - Drive control apparatus, system and method: A drive control apparatus automatically stops a drive power source operation of a vehicle under a predetermined operation condition. When a predetermined time period lapses after the automatic stop operation of the drive power source under a condition that a key switch is still held operated, a power supply from... Agent: Nixon & Vanderhye, PC

20070279950 - Booster power supply circuit and control method therefor and driver ic: A booster power supply circuit includes a booster boosting an input voltage to output an boosted voltage for applying said boosted voltage to a first smoothing capacitor and a controller controlling a transfer destination and an amount of transfer of a charge in the first smoothing capacitor at a transition... Agent: Mcginn Intellectual Property Law Group, PLLC

20070279951 - Electronic device with standby function, standby power supply system and method thereof: A standby power supply system in an electronic device including a power-consuming circuit is provided. The standby power supply comprises a signal sensor, a standby power source, a switch circuit, a charge circuit and a power control unit. The signal sensor receives a system-on signal and generates a charging signal... Agent: Rabin & Berdo, PC

20070279945 - Flyback converter with improved synchronous rectification: A flyback converter circuit in accordance with an embodiment of the present application includes a DC input operable to receive a DC voltage from a DC voltage source, a transformer including a primary coil and a secondary coil, a primary switch operable to selectively connect the primary coil to the... Agent: Ostrolenk Faber Gerb & Soffen

20070279946 - Dc-ac converter, and method for supplying ac power: First and second semiconductor switches which are activated alternately are provided between ends of a primary winding and a common potential point, wherein a DC power supply voltage is supplied to a center tap. An electric current flowing into a load is fed back to thereby subject the semiconductor switches... Agent: Merchant & Gould PC

20070279947 - High-voltage direct-current transmission device: A device for the transmission of a high-voltage direct current has a supply connection terminal for connecting an alternating current network that supplies energy and a consumer connection terminal for connecting a multi-phase consumer. A rectifier is connected downstream of the supply connection terminal, the rectifier is connected to an... Agent: Lerner Greenberg Stemer LLP

20070279948 - Device and method for controlling power converting device: A control device for a power converting device which performs PWM on an output from a DC power supply and produces an output of AC power, including: a current controller which converts a given current command value into a voltage command value; a carrier generator which generates a PWM carrier;... Agent: Foley And Lardner LLP Suite 500

20070279952 - Switching power supply utilizing switch-selectable resistors to determine output voltage: A switching power supply includes a source of DC voltage and a transformer having primary and secondary windings. A switching circuit is coupled between the DC voltage and the primary winding to provide alternating current to the primary winding. A rectifier circuit is coupled to the secondary winding to provide... Agent: Pillsbury Winthrop Shaw Pittman LLP

20070279953 - Multi-configurable, scalable, redundant battery module with multiple fault tolerance: An energy delivery system includes at least one string of two or more energy delivery modules electrically coupled in series. Each energy delivery module includes one or more energy delivery devices for storing and delivering electrical current, and a module monitor for monitoring and controlling each of the energy delivery... Agent: Wilmer Cutler Pickering Hale And Dorr LLP

20070279954 - Device for converting ac power to multiple dc outputs with retractable cords and multiple adapter tips: An electrical adapter is disclosed that includes a power supply circuit, a sensing circuit and one or more universal DC output connectors. The electrical adapter is configured to convert AC input power at a nominal 120 volts AC to one or more DC output voltages which has the ability to... Agent: Patent Administrator Katten Muchin Rosenman LLP

20070279955 - Bridgeless pfc converter with low common-mode noise and high power density: A bridgeless power factor correction converter that can reduce common-mode noise and enhance power density is made up of a boost inductor coupled to an input end, a bidirectional switch connected in series with the boost inductor, a first series rectifying circuit having a junction node connected between the boost... Agent: Madson & Austin

20070279956 - Circuit arrangement for aircraft engine regulators: A circuit arrangement for aircraft engine regulators, for providing or generating a bipolar output direct current signal as a function of at least one pulse-width modulated input signal is disclosed. Said circuit arrangement comprises at least two driver stages, each driver stage being controllable by a pulse-width modulated input signal... Agent: Davidson, Davidson & Kappel, LLC

20070279958 - Measurement of the current of a frequency converter: A method and an apparatus for measuring the output currents of a frequency converter, preferably a vector-controlled frequency converter, which comprises a mains bridge (10) connectable to an alternating-current network and a load bridge (11) connectable to an alternating-current load and between these a direct-voltage intermediate circuit, by using current... Agent: Birch Stewart Kolasch & Birch

20070279957 - Power integrated circuit: In a power integrated circuit, a voltage-type single-phase full-bridge conversion circuit is used as a basic unit. The basic unit includes a level-shift-type gate drive circuit. An integrated single-phase multi-level conversion circuit is formed by connecting basic units in series. An integrated three-phase multi-level conversion circuit is formed by connecting... Agent: Mcglew & Tuttle, PC