Electric power conversion systems inventions 07/07

20070171686 - Circuit arrangement for the electrical isolation of signal lines: The invention relates to a circuit arrangement for the electrical isolation of signal lines, with an input (IN) for applying an input signal, an output (OUT) for releasing an output signal, and an initial branch (1) with an opto-coupler (OK) for optically coupling the input (IN) to the output (OUT),... Agent: Nath & Associates, PLLC

20070171688 - Overpower-protection circuit and power supply apparatus having the same: The present invention provides an overpower-protection circuit and a power supply apparatus having the same. The power supply apparatus comprises a rectifier, a transformer and an overpower-protection circuit. The overpower-protection circuit comprises a converter having a converter input electronically coupled to the rectifier and a converter output, a photo coupler... Agent: Joseph J. Laks, Vice President Thomson Licensing LLC

20070171681 - Adaptive inductive power supply: A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected to a DC power source. When loads are added or removed from the system, the contactless power supply is capable... Agent: Warner, Norcross & Judd In Re: Alticor Inc.

20070171679 - Charge mode control of a serial resonance converter: The present invention relates to an apparatus and a method for converting power from a power input to a DC output current or voltage, where a first feedback circuit a traditional feedback. The converter type is a resonant DC-DC converter. The scope of the invention is to reach a high... Agent: Roberts, Mlotkowski & Hobbes

20070171680 - Methods and apparatus for a resonant converter: Methods and apparatus for a dc-dc converter for operating at substantially fixed switching frequency, the converter including a rectifier, and a resonant inverter coupled to the rectifier, the resonant inverter including a switch and a reactive network having first, second, third and fourth energy storage elements, wherein an impedance magnitude... Agent: Daly, Crowley, Mofford & Durkee, LLP

20070171682 - Primary side controlled switching regulator: A switching regulator includes a transformer having a primary winding and an auxiliary winding connected to the supply rail of the switching regulator. The primary winding is coupled to the positive supply rail. The auxiliary winding is coupled to the negative supply rail. A switch is connected in series with... Agent: Rosenberg, Klein & Lee

20070171683 - Switching power supply controller and method therefor: In one embodiment, a switching power supply controller decouples the power supply controller from receiving a sense signal during one portion of the operation of the power supply controller and couples the switching power supply controller to receive the sense signal during another portion of the operation.... Agent: Semiconductor Components Industries, LLC Bradley J. Botsch

20070171684 - Dc-ac converter controller, ic therefor, and electronic apparatus utilizing such dc-ac converter: An inverter has a semiconductor switch circuit provided in the primary circuit of a transformer. The switch circuit is controlled by a PWM circuit. The switch circuit is operated on the basis of an intermittent-operation signal having an ON state and OFF state to: set an error signal to a... Agent: Rohm Co., Ltd. C/o Keating & Bennett, LLP

20070171685 - Control circuit including adaptive bias for transformer voltage detection of a power converter: A control circuit is developed to detect a flyback voltage of a transformer of a power converter. The control circuit comprises a switch, a detection circuit and a switching circuit. The switch is coupled to the transformer for switching the transformer. The detection circuit coupled the transformer to detect the... Agent: Rosenberg, Klein & Lee

20070171687 - Switched mode power supply: The switched mode power supply contains a transformer, which has a primary winding and at least one secondary winding, a switching transistor in series with the primary winding and a control circuit for controlling an output voltage of the switched mode power supply. The control circuit contains an oscillator, whose... Agent: Joseph J. Laks, Vice President Thomson Licensing LLC

20070171689 - Ac voltage generating apparatus and motive power outputting apparatus: A motive power outputting apparatus includes motor generators, inverters, and a transformer. The motor generator includes a three-phase coil, and the motor generator includes a three-phase coil. The inverter allows an in-phase AC current to pass through an U-phase coil, a V-phase coil and a W-phase coil of the three-phase... Agent: Oliff & Berridge, PLC

20070171690 - Active diode bridge system and method: A circuit has a diode bridge, a sensed circuit element, and a controller. The diode bridge includes a plurality of diodes and at least one diode bypass element associated with at least one of the plurality of diodes. The controller determines an electrical parameter of the sensed circuit element and... Agent: Toler Schaffer, LLP

20070165426 - Resonant switching power source apparatus: A resonant switching power source apparatus has a first switching element and second switching element being connected in series between output terminals of a DC power source and are alternately turned on and off; a series resonant circuit having a primary winding of a transformer and a current resonance capacitor... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070165429 - Reverse current protection for power converters having synchronous rectifiers: A power supply includes an input, an output, a reverse current protection circuit, a synchronous rectifier and an output choke. The reverse current protection circuit is configured for detecting a flyback voltage indicative of reverse current, and for deactivating the synchronous rectifier in response to detecting the flyback voltage. The... Agent: Harness, Dickey, & Pierce, P.l.c

20070165431 - Inverter device: In an inverter circuit including switching devices and diodes connected in parallel with the switching devices which are provided in pairs of upper and lower arms, and also including resistances for detecting phase currents in a motor connected to the lower arms, during dead time periods when both a switching... Agent: Osha Liang L.L.P.

20070165428 - Digital pulse width modulation controlling system and method: A digital pulse width modulation (DPWM) controlling system for controlling a load of an application circuit with a DPWM unit is provided, which comprises a comparator and a micro-control unit, the comparator receiving a sense signal detected from the load and a reference signal and comparing the sense signal and... Agent: Garcia-zamor Intellectual Property Law Attn: Ruy Garcia-zamor

20070165427 - Error voltage ripple compensation to extend bandwidth of a feedback loop in a dc-to-dc converter: Control loop ripple voltage in an error amplifier may be the result of a non-linear time varying behavior of a switch mode power conversion process. An inverse waveform replica of the error amplifier control loop ripple voltage waveform may be generated to substantially cancel the non-linear loop dynamics introduced by... Agent: Baker Botts, LLP

20070165430 - Capacitor multiplier: A capacitor multiplier including a capacitor, a first voltage follower, a first impedance element, and a second impedance element is provided. The input terminal of the first voltage follower is electrically connected to the first terminal of the capacitor. Wherein, the voltage level of the output terminal of the first... Agent: Jianq Chyun Intellectual Property Office

20070165432 - Voltage conversion device and computer-readable recording medium having program recorded thereon for computer to control voltage conversion by voltage conversion device: A control device calculates a voltage command value of a voltage step-up converter based on a torque command value and a motor revolution number and calculates an on-duty of an NPN transistor based on the calculated voltage command value and a DC voltage from a voltage sensor. When the on-duty... Agent: Oliff & Berridge, PLC

20070165433 - Power supply apparatus: One of a plurality of voltages is adapted to be applied to power supply terminals (2a, 2b, 2c). A rectifying circuit (6) rectifies the applied voltage and develops a rectified voltage between the output terminals (6a, 6b) thereof. Inverters (16a, 16b) are connected into one of a plurality of inverter... Agent: Duane Morris, LLPIPDepartment

20070159865 - Dc-dc converter: A DC-DC converter is provided which includes a switching element, a choke coil, a flywheel diode, an output capacitor, a diode, and an auxiliary transformer having primary and secondary windings. The primary winding and the switching element constitute a first series circuit such that one terminal of the primary winding... Agent: Oliff & Berridge, PLC

20070159855 - Method and apparatus for extending the operating range of a flyforward converter: A technique for extending the operating range of a flyforward converter to low input voltages. In one aspect, power converter includes a positive input supply rail and a negative input supply rail. A power converter input voltage is to be applied between the positive and negative input supply rails. A... Agent: Blakely Sokoloff Taylor & Zafman

20070159857 - Dc to dc converter: A direct current (DC) to DC converter is provided. The DC to DC converter includes: a transformer which comprises a primary winding which is connected in series with an input voltage and a secondary winding which generates induced current when the input voltage is applied to the primary winding; a... Agent: Sughrue Mion, PLLC

20070159856 - Flyback power converter with split primary winding transformer: A flyback power converter includes a transformer having a first primary winding and a second primary winding. The first primary winding is coupled to the positive supply rail. The second primary winding is coupled to the negative supply rail. A transistor is connected in between the first primary winding and... Agent: Rosenberg, Klein & Lee

20070159858 - Bi-directional energy conversion system: An alternating current (AC) to direct current (DC) high efficiency conversion architecture comprises an AC-to-DC conversion input stage operative to receive an instantaneous AC input, a DC output stage connected to the input stage through an AC link and operative to output a DC power to at least one customer,... Agent: Dr. Mark M. Friedman C/o Bill Polkinghorn - Discovery Dispatch

20070159859 - Voltage translator circuits using capacitive techniques: A voltage translator circuit and a method for operating the same. The voltage translator circuit includes (a) an input node, an output node, and a ground node; (b) a voltage divider circuit including a first and second resistors coupled in series between the input node and the ground node; (c)... Agent: Schmeiser, Olsen & Watts

20070159860 - Filter: EMC filter, for connection between a mains supply network and a mains-operated appliance to reduce conduction noise between said supply network and said appliance, comprising a voltage divider connected to said mains network, for generating a voltage lower than a voltage of said mains network; rectifying means, connected to an... Agent: Blank Rome LLP

20070159861 - Engine control device: An engine control device, especially an engine control device having an internal by-pass, is disclosed. The universally applicable engine control device includes an integrated by-pass function. For this purpose, a housing includes chambers that are electrically insulated from one another and that are configured both to receive a respective power... Agent: Harness, Dickey & Pierce, P.L.C

20070159862 - Adaptively configured and autoranging voltage transformation module arrays: A method and apparatus for adaptively configuring an array of voltage transformation modules is disclosed. The aggregate voltage transformation ratio of the adaptive array is adjusted to digitally regulate the output voltage for a wide range of input voltages. An integrated adaptive array having a plurality of input cells, a... Agent: Fish & Richardson P.C.

20070159863 - Field effect transistor of lus semiconductor and synchronous rectifier circuits: The Lus, Semiconductor in this invention is characterized by replacing the static shielding diode (SSD) of traditional Enhancement Mode Field Effect Transistors (EMFETs) or Depletion Mode Field Effect Transistor (DMFETs) with polarity reversed (comparing with traditional SSD) SSD, Schottky Diode, or Zener Diode, or face-to-face or back-to-back coupled Schottky Diodes,... Agent: Lu, Chao-cheng

20070159864 - Semiconductor module and power conversion device: One method of achieving the above subjects is by connecting a block member 14, which is connected to the side opposite to that of a semiconductor chip 11 having insulating substrates 12 and 13 connected to the top and bottom of the semiconductor chip 11, to a block member 15... Agent: Crowell & Moring LLP Intellectual Property Group

20070159866 - Solar array inverter with maximum power tracking: An inverter for use in connecting a DC power source to the utility grid includes a single DC-AC conversion stage, maximum (source) power tracking, and current control based on feed-forward compensation as a function of input power voltage error, rectified utility line voltage, and a scaled inverse of RMS utility... Agent: Bingham Mchale LLP

20070153553 - Control circuit for lossless switching converter: A DC-to-DC converter comprises a converter section and a controller section. The converter section comprises a primary section and a secondary section. The primary and secondary section includes MOSFET switches. The controller section is coupled to the converter section and comprises a pulse width modulation (PWM) section and a delay... Agent: Honeywell International Inc.

20070153554 - Insulated switching power source device: A primary side is provided with an oscillation circuit arranged to turn on a power switch at a constant cycle. The secondary side is provided with an on period control circuit arranged to output an off signal for turning the power switch off by detecting output voltage and comparing with... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070153555 - Low-harmonics, polyphase converter circuit: p

20070153556 - Inverter device: An inverter device includes an inverter circuit including a bridge circuit connected between a positive electrode and a negative electrode of a direct current power supply. The bridge circuit includes an upper arm unit and a lower arm unit connected in series. The upper arm unit includes a upper arm... Agent: Sughrue Mion, PLLC

20070153557 - Linear ac/dc power adapters: An AC/DC power adapter comprising a transformer and a rectifier bridge. The rectifier bridge replaces the conventional diodes with Schottky diodes. Due to a low voltage drop, the heat dissipated by the rectifier bridge is decreased and the power efficiency of the rectifier bridge is significantly increased.... Agent: Michael Bednarek Pillsbury Winthrop Shaw Pittman LLP

20070153558 - Method and apparatus for dc to ac power generator: The dc to ac power generator has a DC power source which is connected at one pole to the primary of a conventional voltage transformer, and at its other pole to a relay controlled switching system. A mechanical switch of the relay is connected to the opposite pole of the... Agent: Litman Law Offices, Ltd.

20070153559 - Dc-ac converter: A DC-AC converter has two half-bridge circuits using an input feedback signal and an input clock signal together with time delay circuits, wherein one of the half-bridge circuits drives one pair of corresponding FETs and the other half-bridge circuit drives the other pair of corresponding FETs. The DC-AC converter includes:... Agent: St. Onge Steward Johnston & Reens, LLC

20070153560 - Portable chargers for use with electric vehicles: A type of portable chargers with power factor correction capability for use with electric vehicles comprises of a filtering rectifier module, an integrated circuit power supply module, a DC-DC PFC module and a DC-DC BUCK module. The filtering rectifier module has one input port and two output ports. The IC... Agent: Emil Chang Law Offices Of Emil Chang

20070153561 - Multiple antenna energy harvesting: Energy harvesting circuits and associated methods are provided that employ multiple antennas to optimize the amount of energy that is harvested while at the same time making efficient use of tag space. In some embodiments, matching networks are chosen in a manner that optimizes the DC energy that is created... Agent: Eckert Seamans Cherin & Mellott