Electric power conversion systems inventions 08/07

20070201249 - Multilevel push pull converter: A power converter for converting an input voltage (Vin) into an output voltage (Vout), comprising a first supply potential and a second supply potential established by the input voltage, and at least one primary winding having two terminals, a center tap arranged between the two terminals and connected to the... Agent: O' Shea, Getz & Kosakowski, P.C.

20070201250 - Switching power supply unit: A switching power supply unit is provided, in which a convertible voltage range can be more widened. A transformer having four windings at a high-voltage side, the windings having the number of turns equal to one another, and four inductors are provided in correspondence with four switching circuits. Four current... Agent: Oliff & Berridge, PLC

20070201251 - Switching power supply circuit: The present invention may provide a switching power supply circuit for converting primary side direct-current voltage to secondary side direct-current voltage. The switching power supply circuit may include a choke coil, a converter transformer; a switching element, a primary side series resonant capacitor, a primary side parallel resonant capacitor, an... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070201252 - Control circuit having two-level under voltage lockout threshold to improve the protection of power supply: The invention presents a switching power control circuit including two levels of under voltage lockout to improve the protection of the power supply. An input terminal of control circuit is connected to a supplied capacitor to supply the power of the control circuit. The supplied capacitor is charged through a... Agent: Rosenberg, Klein & Lee

20070201253 - Switching power supply apparatus: Disclosed is a synchronous rectification type switching power supply apparatus, including: a transformer that receives input voltage on a primary side; a switching element that is to be turned on or off for rectifying current of a secondary coil of the transformer; a control circuit to drive the switching element.... Agent: Frishauf, Holtz, Goodman & Chick, PC

20070201254 - Motor drive: The motor drive of this invention includes: an arm with a first electric power semiconductor-switching element and a second electric power semiconductor-switching element, both connected in series between major terminals; and a level-shifting circuit that transmits a control signal of the first semiconductor-switching element connected to the high-voltage side of... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070195556 - Driving circuit for power switching device: A driving circuit has a p-channel transistor and an n-channel transistor. A power switching element is set at an on state each time the p-channel transistor sets a charging line at a conductive state in response to a leading edge of an output pulse to supply a positive charge to... Agent: Nixon & Vanderhye, PC

20070195562 - Resonant switching power source device: The transformer 5 used for the present invention, comprises a core of E-shaped first and second core halves 5g, 5h coupled together in opposed relation to each other to form a closed magnetic circuit or circuits for supporting primary and secondary windings 5a, 5b wound around first and second core... Agent: Bachman & Lapointe, P.C.

20070195563 - Dc/dc converter: In a non-isolated DC/DC converter, a reference potential for a low-side pre-driver which drives a gate of a low-side MOSFET is applied from a portion except for a main circuit passing through a high-side MOSFET and the low-side MOSFET so that a parasitic inductance between a source of the low-side... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070195557 - Triple voltage dc-to-dc converter and method: A circuit and method of providing three dc voltage buses and transforming power between a low voltage dc converter and a high voltage dc converter, by coupling a primary dc power circuit and a secondary dc power circuit through an isolation transformer; providing the gating signals to power semiconductor switches... Agent: Quarles & Brady LLP

20070195559 - Control circuit for a switching power supply, method for controlling a switching power supply and computer program: A control circuit for a power supply having a controllable switch for switching a current through a first transformer winding and a voltage providing circuit for providing an output voltage based on a voltage generated in a second transformer winding has a comparing unit for generating a comparison signal. The... Agent: Baker Botts, L.L.P.

20070195558 - Power supply for both ac and dc: There is provided a power supply for AC/DC and DC/DC conversion which receives the DC power supplied from airplanes, vehicles and vessels as well as normal AC power, and converts the power to DC power and supplies it to portable electronic products. The power supply for AC/DC and DC/DC conversion... Agent: Cantor Colburn, LLP

20070195560 - Switching power supply circuit: A switching power supply circuit may include a rectifying and smoothing part configured to convert input alternating-current, AC power from an AC power supply into direct-current, DC power; a converter part configured to convert the DC power from the rectifying and smoothing part into AC power, and further convert the... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070195561 - High-frequency heating device: An object of the present invention is to provide an inverter circuit in which soft start can be implemented by a simple circuit added thereto. In high-frequency heating apparatus for driving a magnetron, a DC power supply is chopped by two semiconductor switching devices, and this is output as an... Agent: Pearne & Gordon LLP

20070195564 - Battery low-voltage cutoff circuit: A electronic device includes an electrical component powered by a battery and a compartment to receive the battery. A low voltage cutoff circuit is configured to couple to the battery. The low voltage cutoff circuit includes a switching device having a control terminal, a current sourcing terminal and current sinking... Agent: Fish & Richardson P.C.

20070195565 - Dc-dc converter: A DC-DC converter includes a regeneration preventing circuit to bring a synchronous rectifying switching element to an OFF-state when an output of an error amplifier is lower than a lower-limit potential of a triangular-wave signal, that is, when the output of the error amplifier deviates from a voltage range of... Agent: Ostrolenk Faber Gerb & Soffen

20070195566 - Over voltage clamp: A clamp circuit for use in a DC/DC voltage converter having a first converter output including a first node and a second node, and a second converter output including a third node a fourth node. The clamp circuit includes a positive voltage output node coupled to the first node, a... Agent: Mintz, Levin, Cohn, Ferris, Glovsky And Popeo, P.C.

20070195567 - Medium voltage inverter system: A medium or high voltage multi-inverter system is described, in which multiple inverter cells are included in a phase line to increase the voltage level supported by the system, and support higher voltage loads such as AC three-phase motors. In one configuration, five cells are used: two each in two... Agent: Banner & Witcoff, Ltd.

20070195568 - Control apparatus and control method for voltage conversion apparatus: The SOC of a battery is calculated based on the voltage Vb and current Ib of a battery, and a battery electromotive voltage Vbo is calculated based on the SOC of the battery. Based on the battery electromotive voltage Vbo and the voltage Vc of a capacitor connected on the... Agent: Kenyon & Kenyon LLP

20070189043 - Electronic power conditioner with integrated magnetics: A power supply including a main stage converter having a bridge circuit having input switches for receiving input voltage and providing an output, a main transformer and at least one output choke having an integrated magnetic structure coupled to the output of the bridge circuit and at least one rectifier... Agent: Ostrolenk Faber Gerb & Soffen

20070189046 - Power conversion apparatus: A power conversion apparatus is disclosed. In the case where a coil is arranged in a power module, the circuit system between the ends of the coil in the power module, regardless of where the coil is located, is structurally isolated and insulated from each other. This isolation and insulation... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070189044 - Nine device ac-to-ac converter: AC-to-AC power conversion systems and methods are presented, in which a small number of asymmetrical power switching devices are used to convert input AC power to output AC power of constant or variable frequency.... Agent: Rockwell Automation, Inc./fay

20070189045 - Power system having a voltage regulator with a notch filter: A control system for an AC line voltage distribution system includes a DC energy storage system and an inverter coupled to the DC energy storage system adapted for coupling to the AC line distribution system. A proportional-integral voltage regulator coupled to the DC energy storage system receives a voltage signal... Agent: Daly, Crowley, Mofford & Durkee, LLP

20070189047 - Power control method for uplink in mobile communication and apparatus thereof: A power controlling device in a mobile communication system, and a method thereof. A base station calculates an average interference of N previous frames, and broadcasts the average interference to subscriber stations. The subscriber stations determine transmission power based on the average interference. Noise and Interference (NI) of frames within... Agent: The Farrell Law Firm, P.C.

20070189048 - Inverter: A small and highly vibration-proof inverter capable of detecting a phase current without requiring the development of complicated control software and without causing any current distortion is provided. Shunt resistors (15, 16) serving as a kind of current detector are provided, respectively, between lower arm switching elements (X, Y, Z)... Agent: Wenderoth, Lind & Ponack L.L.P.

20070183169 - Combination i/o modules in a modular automation controller: The invention describes combination I/O modules for automation. Various combinations of inputs and output with different electrical interfaces are offered providing greater flexibility in controller hardware selection.... Agent: Autotech Technologies, LLP

20070183171 - Switching power supply apparatus for correcting overcurrent detection point based on gradient of switching current: A switching power supply apparatus has a switching device control circuit for performing overcurrent protection by controlling switching-on/off of a switching device, connected serially to a primary winding of a transformer, so as to make a voltage output from a rectifying and smoothing circuit, connected to a secondary winding of... Agent: Wood, Herron & Evans, LLP

20070183172 - Flyback dc/dc converter using clamp diode: Provided is a flyback DC/DC converter for a power supply. In the flyback DC/DC converter, a flyback driver unit provides a primary current. A transformer includes a plurality of secondary coils for inducing energy from the primary coil receiving the primary current. A rectifier unit includes a plurality of rectifier... Agent: Lowe Hauptman Berner, LLP

20070183170 - Switching power supply unit: A switching power supply unit is provided, in which widening of the input voltage range can be achieved while suppressing production of a surge current. A transformer having two primary windings having the number of turns equal to each other, and two inductors are provided correspondingly to two switching circuits.... Agent: Oliff & Berridge, PLC

20070183173 - Single feedback input for regulation at both positive and negative voltage levels: A voltage regulator provides a regulated output load voltage at either a positive level or an inverted level relative to an input supply voltage. A switching circuit and control circuit are formed on an integrated circuit having a single pin for coupling to regulator feedback signal. The feedback signal is... Agent: Mcdermott Will & Emery LLP

20070183174 - High voltage gate driver ic (hvic) with internal charge pumping voltage source: A circuit for using a high voltage gate driver IC (HVIC) for regulation of external floating voltage sources without use of regulation circuits. The circuit including high and low switches; at least one external voltage source coupled to the high and low switches; an HVIC having at least one internal... Agent: Ostrolenk Faber Gerb & Soffen

20070183175 - Charge pumping circuit: A charge pumping circuit includes a first switch for controlling one of push and pull operations in accordance with a first control signal; a current mirror circuit constructed from transistors each having a different polarity from the first switch; a second switch for controlling current input to the current mirror... Agent: Mcdermott Will & Emery LLP

20070183176 - Power supply apparatus: An output from an electric generator 1 is rectified by a DC converter unit 2. An output from the DC converter unit 2 is regulated in voltage by the DC-DC converter unit 3 and converted into an AC output having a predetermined frequency by the DC-AC converter unit 4. The... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070183177 - Traction converter having a line-side four-quadrant controller, and method therefor: A traction current converter includes a line-side four-quadrant converter which is provided with turn-off power semiconductors that are implemented as current converter valves. Each of the power semiconductors is connected electrically back-to-back in parallel to a corresponding power diode. A regulating device has an output side which is connected to... Agent: Henry M Feiereisen, LLC

20070177409 - Control apparatus for voltage transforming apparatus: The control apparatus for controlling a voltage transforming apparatus having a transformer, power switching elements disposed in a primary side, and synchronous-rectifying switching elements disposed in a secondary side includes a judging circuit making a judgment as to whether or not an output current of the voltage transforming apparatus is... Agent: Nixon & Vanderhye, PC

20070177410 - Control apparatus for voltage transforming apparatus: The control apparatus for controlling a voltage transforming apparatus having a transformer, power switching elements disposed in a primary side, and synchronous-rectifying switching elements disposed in a secondary side includes a judging circuit making a judgment as to whether or not an output current of the voltage transforming apparatus is... Agent: Nixon & Vanderhye, PC

20070177411 - Diode bridge configurations for increasing current in a distributed power network: One embodiment of the present invention includes a communication network comprises a communication cable having a first wire pair and a second wire pair that both extend between a first end and a second end of the communication cable. The network also comprises at least one power source configured to... Agent: Texas Instruments Incorporated

20070177407 - Frequency converter having an intermediate circuit without any capacitors: A frequency converter includes an intermediate circuit without any capacitors and an electronics which is supplied with power from a power supply device. The power supply device has a buffer capacitor which is disposed on an input side of the power supply device and connected electrically in parallel with the... Agent: Henry M Feiereisen, LLC

20070177408 - System and method for analog voltage processing in wide range for cold-cathode fluorescent lamp: System and method for processing analog voltage for cold-cathode fluorescent lamp. The system includes a voltage-to-current converter configured to receive an input analog voltage signal and generate a first current signal, and a current processing component configured to receive the first current signal and a predetermined current and generate a... Agent: Townsend And Townsend And Crew, LLP

20070177412 - Charge pumped driver for switched mode power supply: A driver circuit provides a driving signal to the power stage of a switched mode power supply in correspondence with a pulse width modulated duty cycle. A voltage doubler circuit including a bucket capacitor and plural switches is arranged to successively couple the bucket capacitor to the input power source... Agent: Brian M Berliner, Esq O'melveny & Myers, LLP