Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems January USPTO class patent listing 01/07

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.
01/25/2007 > 12 patent applications in 10 patent subcategories.

20070019442 - Power converters having varied switching frequencies: Systems and techniques for performing power conversion operations in a portable device are used to convert an input voltage to a voltage at an output. The conversion operations use a two-stage conversion to convert the input voltage to a first voltage and to convert the first voltage to a second... Agent: Fish & Richardson P.C.

20070019443 - Power device: To control individually a plurality of loads to be turned on by combining a switching regulator with a charge pump circuit using some of the components of the switching regulator. An LED is controlled to be turned on by a switching regulator having an NMOS transistor connected to a transformer... Agent: Osha Liang L.L.P.

20070019444 - Switching power supply circuit: A switching power supply circuit of the present invention includes: a transformer including a main winding and an auxiliary winding, which are magnetically coupled together on a primary winding side; a switching element for intermittently supplying a direct-current voltage to the main winding; and a controller for turning ON/OFF the... Agent: Mark D. Saralino (general) Renner, Otto, Boisselle & Sklar, LLP

20070019445 - Switch with fully isolated power sourcing equipment control: In one embodiment, the invention is an apparatus (e.g., an Ethernet switch) having an isolated side and a line side. A line-side connector is connectable to a cable. An isolated-side physical-layer module (1) is electrically coupled to the connector via a signal-isolation transformer and (2) processes signals transmitted over the... Agent: Mendelsohn & Associates, P.C.

20070019446 - Pfc pre-regulator frequency dithering circuit: A circuit and method of dithering the switching frequency of an off-line power factor corrected (PFC) pre-regulator. The circuitry used to dither the frequency is advantageously accomplished by taking advantage of the PWM's internal timing circuitry. This invention reduces narrow band EMI and eliminates the need to provide specialty PWM... Agent: Texas Instruments Incorporated

20070019447 - Active resistors for reduction of transient power grid noise: Active resistors for reduction of transient power grid noise. An active resistance added in parallel to the operating circuit blocks of a semiconductor device. This resistance increases the damping ratio of the power grid, which in turn decreases the number and the magnitude of oscillations and/or noise resulting from step... Agent: Moore & Van Allen PLLC

20070019448 - Power converter: A power converter comprising: a rectifier arrangement (D1-D4) having inputs coupled to AC power supply terminals; a pair of series-connected capacitors (C1, C2) coupled across output terminals of the rectifier arrangement; a switch (S1) coupled between one of said AC power supply terminals and a midpoint of the pair of... Agent: Philips Electronics North America Corporation Intellectual Property & Standards

20070019449 - Electric vehicle controller: In an electric car control apparatus for driving an induction motor, detection accuracy of a DC voltage is improved. A DC power supply device is provided which has a maximum potential terminal A, an intermediate potential terminal B, a minimum potential terminal C, an upstream side capacitor 6 between the... Agent: Buchanan, Ingersoll & Rooney PC

20070019451 - Resonant charge power supply topology for high pulse rate pulsed power systems: A system for charging a capacitor with relatively high energy pulses at a relatively high pulse repetition rate includes a voltage transformer. A resonant circuit is established having an inductor connected to the transformer's low voltage side and a capacitor connected to the transformer's high voltage side. A power supply... Agent: Neil K. Nydegger Nydegger & Associates

20070019450 - System and method for regulating an output of a switching supply circuit: A system and method is provided for regulating an output current in a switching supply circuit. In one embodiment, a switching supply circuit comprises a high-side field-effect transistor (FET), a low-side FET, and a driver control circuit operative to switch the high-side FET and the low-side FET between opposing “ON”... Agent: Texas Instruments Incorporated

20070019452 - Electronic apparatus and sensor network system: Provided is a technique of reducing time and labor of replacing and charging the battery. This invention provides an electronic apparatus, which has a name written on a front side thereof, including: a radio communication apparatus; a secondary battery; a solar battery on the front side; and a display unit... Agent: Stanley P. Fisher Reed Smith LLP

20070019453 - Electrical energy source: The electrical energy source includes a portable enclosure that houses at least one battery pack, at least one battery charger, at least one AC inverter and, optionally, a regeneration device that can power the battery charger. Operation of batteries, AC inverters and regeneration unit is coordinated by a control circuit.... Agent: Litman Law Offices, Ltd

01/18/2007 > 7 patent applications in 6 patent subcategories.

20070014129 - Power supply device and image forming apparatus: When a detected current value deviates from a range between an upper limit value and a lower limit value, a pulse width adjustment operation for increasing or decreasing a currently set counter value is repeatedly performed at every operation time interval such that the detected current value is brought to... Agent: Baker Botts LLP C/o Intellectual Property Department

20070014130 - Full-bridge and half-bridge compatible driver timing schedule for direct drive backlight system: A driver circuit or controller flexibly drives either a half-bridge or a full-bridge switching network in a backlight inverter without modification, redundant circuitry or additional components. The driver circuit includes four outputs to provide four respective driving signals that establish a periodic timing sequence using a zero-voltage switching technique for... Agent: Knobbe Martens Olson & Bear LLP

20070014131 - Ac high voltage detecting device: An AC high voltage detecting device includes a high voltage power supply (HVPS) to convert a low voltage into an AC high voltage, a rectifier to rectify the converted AC high voltage into a positive voltage and a negative voltage, a voltage divider to divide the rectified positive voltage and... Agent: Stanzione & Kim, LLP

20070014132 - Comprehensive power quality controller for substation in power system: This invention disclosed is a comprehensive power quality controller for substation in the electric power system and includes a Thyristor Controlled Reactor (TCR), pure tuned passive filter Zf, additional inductor L active power filter (APF), and a coupling transformer. The Thyristor Controlled Reactor (TCR) provides inductive reactive power and controls... Agent: Patterson, Thuente, Skaar & Christensen, P.A.

20070014134 - Inrush current control circuit: An inrush current control circuit includes a first and second control units connected in series, wherein the first and second control units all have a current limiting resistor and switch connected in parallel. The current limiting resistor of the first control unit is used to prevent an inrush current generated... Agent: Harness, Dickey & Pierce, P.L.C

20070014133 - Synchronous rectification circuit: A synchronous rectification circuit of a switching power supply device where circuit elements such as rectification switch elements are protected when an abnormality occurs in an output of a transformer, wherein a (fault) detecting circuit detects an abnormality of a trigger signal transmitted from a transformer, a shutoff circuit quickly... Agent: Armstrong, Kratz, Quintos, Hanson & Brooks, LLP

20070014135 - Alternating current converter: Voltage booster converter comprising a pair of input terminals A and B for connecting a DC input voltage Vin between these two terminals; a pair P0 of switches SB, SH in series connected by the switch SB to the input terminal B, the input terminal A being connected across an... Agent: Lowe Hauptman Gilman & Berner, LLP

01/11/2007 > 7 patent applications in 6 patent subcategories.

20070008742 - Chaotic signal generator for ultra wide band communication system: In a chaotic signal generator, a first signal generator generates a first signal. The first signal includes a first fundamental wave having a preset first frequency and a plurality of harmonic waves of the first fundamental wave. A second signal generator generates a second signal. The second signal includes a... Agent: Lowe Hauptman Berner, LLP

20070008741 - Electrical power supply system and a permanent magnet generator for such a system: An electrical power supply system including an engine driven permanent magnet generator (11) operable to produce a variable voltage and high frequency output which is converted by a series train AC/AC conversion circuit (14) into a fixed voltage and relatively low frequency AC output for supply through a trip switch... Agent: Woodard, Emhardt, Moriarty, Mcnett & Henry LLP

20070008743 - Voltage regulator converter without switching losses: The invention concerns a converter which includes two input terminals and two output terminals, a main transformer presenting primary and secondary windings connected between the input terminals and the output terminals respectively, a switching device, a first inductance and a first capacitance forming a first resonant circuit with the primary... Agent: Bachman & Lapointe, P.C.

20070008744 - High efficiency half-bridge dc/dc convertor: In the DC/DC converter, a switching part has first and second switches serially connected from a power supply to a ground. The first and second switches switch on/off in response to first and second switching signals having a fixed frequency. The first switching signal has a phase level that does... Agent: Lowe Hauptman Berner, LLP

20070008746 - Power device and power adjusting method: A power device includes a transformer, a control signal outputting unit, and a power adjusting unit. The transformer has a primary coil and a secondary coil. The control signal outputting unit variably controls a parameter value and outputs, based on the parameter value, a control signal for controlling output power... Agent: Banner & Witcoff, Ltd. Attorneys For Client Nos. 0166889, 006760

20070008745 - Wide range power supply: A wide range power supply capable of delivering 20V to 5000V is provided. The power supply of the present invention uses switch mode technology to achieve high overall operating efficiency and is capable of operating from no load to full load without loss of regulation. The power supply in accordance... Agent: Townsend And Townsend And Crew, LLP

20070008747 - Bridgeless bi-directional forward type converter: A circuit is provided for converting power from an AC power source to DC power. The circuit including bi-directional switches capable of conducting and blocking a current flow in both directions. One or more control switches are coupled to a bi-directional switch to enable and disable the current flow through... Agent: Ostrolenk Faber Gerb & Soffen

20070008750 - Dc/ac power converter and controlling method thereof: The proposed DC/AC power converter for transforming a DC input source to an AC output source includes a transformer having a primary and a secondary windings, a switch network having a first switch electrically connected between the DC input source and the primary winding, a two-way current-transmitting module electrically connected... Agent: Volpe And Koenig, P.C.

20070008749 - Method and apparatus for conditional response to a fault condition in a switching power supply: Techniques are disclosed to regulate an output of a power converter. One example power converter includes an energy transfer element coupled between an input and an output of the power converter. A switch included in the power converter is coupled to the input of the energy transfer element. The power... Agent: Blakely Sokoloff Taylor & Zafman

20070008748 - Method and apparatus for overcurrent protection in dc-dc power converters: A controller and method for a switched-mode power converter adaptively provides overcurrent protection by detecting a current in the power converter exceeding a current limit during substantially a minimum on time of a power switch. A count N is computed for the number of consecutive active switching cycles that a... Agent: Texas Instruments Incorporated

20070008751 - 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

20070008752 - Operation controlling: The invention deals with a controlling device (22) for an electrical device such as for example a hearing aid (20). The hearing aid (20) includes a power supply (23) and a functional unit (21) controlled by the controlling device (22) via a reset signal (2). In order to reduce undesired... Agent: Birch Stewart Kolasch & Birch

20070008753 - Method and apparatus to limit maximum switch current in a switch of a switching power supply: Techniques are disclosed to limit the current in a switch of a switching power supply. An example switching regulator circuit includes a switch to be coupled to an energy transfer element. A controller is coupled to the switch to control switching of the switch. A current sensor is included in... Agent: Blakely Sokoloff Taylor & Zafman

20070008754 - Charge pump for bus-powered device: A charge pump can be used with a bus-powered device connected to a bus. The charge pump comprises a power connection from the bus carrying a DC power signal constrained to not exceed a given current limit and a given voltage limit, a DC-to-DC step-down voltage converter, a capacitor, and... Agent: Stoel Rives LLP

20070008755 - Power source apparatus: There is provided a power source apparatus that includes a master circuit and a slave circuit provided in parallel and outputs an electric current that adds an electric current output from the master circuit and an electric current output from the slave circuit as a power-supply current. The master circuit... Agent: Osha Liang L.L.P.

20070008756 - Method and apparatus to limit maximum switch current in a switching power supply: Techniques are disclosed to limit the current in a switch of a switching power supply. An example switching regulator circuit includes a power switch to be coupled to an energy transfer element of a power supply. A controller to generate a drive signal is coupled to be received by the... Agent: Blakely Sokoloff Taylor & Zafman

20070008757 - Synchronous commutation dc-dc converter: A DC-DC converter of synchronous rectification type is provided which comprises: a current detector (51) for discerning electric current (IQ1, IQ2) flowing through a primary side circuit; first and second DC biasing power supplies (53, 54) for producing a bias voltage (VBS1, VBS2) higher than voltage corresponding to excitation current... Agent: Bachman & Lapointe, P.C.

01/04/2007 > 7 patent applications in 6 patent subcategories.
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