Electricity: power supply or regulation systems inventions 07/07

20070170897 - High-frequency power mesfet buck switching power supply: A MESFET based buck converter includes an N-channel MESFET between a battery or other power source and a node Vx. The node Vx is connected to an output node via an inductor and to ground via a Schottky diode or a second MESFET or both. A control circuit drives the... Agent: Advanced Analogic Technologies

20070170898 - Power supply unit and printing apparatus with a supplemental power supply unit: A power supply unit and a printing apparatus, including a first power supply unit and a second power supply unit. The second power supply unit accumulates a power from an outlet and converts an accumulated power to a DC power. An output current from the second power supply unit is... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070170899 - Power supply unit and method of using the same: A power supply unit is provided. The power supply unit comprises a capacitor, a power input unit supplying power to the capacitor, a temperature sensor which is incorporated into the capacitor and senses a temperature of the capacitor, and a power control unit controlling a power path supplying power from... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20070170900 - Power supply device: A power supply device supplying power to various electric devices or inverters of a DC motor. The power supply device can detect an over-voltage which is applied to various electric devices or inverters of a DC motor from an external power source or an over-voltage caused by defects of power... Agent: Staas & Halsey LLP

20070170901 - Voltage regulator output stage with low voltage mos devices: Circuits and methods to provide an LDO output stage implemented with low-voltage devices and still allowing higher voltage levels have been achieved. The output stage has been built using two low voltage MOS devices in series. During the time the regulator is in active mode the second MOS device acts... Agent: Saile Ackerman LLC

20070170903 - Active diode bridge system: A powered device includes a diode bridge, a sensed circuit element, and a controller. The diode bridge has a plurality of diodes and at least one bypass element. The diode bridge has a first input terminal and a second input terminal coupled to at least one pair of wires of... Agent: Toler Schaffer, LLP

20070170902 - Power supply controller and method therefor: In one embodiment, a power supply controller uses a first clock of a first frequency to initiate a PWM cycle in a first operating mode and uses a second clock having a higher frequency to initiate a PWM cycle in a second operating mode.... Agent: Semiconductor Components Industries, LLC Bradley J. Botsch

20070170904 - Switching power supply apparatus and mobile service: After a current value flowing through a coil L is detected, it is converted into a voltage value, is then inputted to an inverting input terminal of a comparator 4, and is then compared with a voltage indicating the difference between the value of a fed back output voltage and... Agent: Fish & Richardson P.C.

20070170905 - Power control system capable of balancing output currents: A power control system includes a voltage control circuit and a plurality of balance circuits. The voltage control circuit controls a voltage level at an output of the power control system according to a reference voltage. Each of the plurality of balancing circuits outputs a current, whose magnitude is a... Agent: Birch, Stewart, Kolasch & Birch, LLP

20070170907 - Semiconductor integrated circuit: A difference between both emitter voltages of a first transistor having an emitter through which a first current flows, and at least one second transistor having an emitter through which such a second current as to reach a current density thereof smaller than that of the emitter of the first... Agent: Miles & Stockbridge PC

20070170906 - Temperature reference circuit: The invention provides a temperature reference circuit that is adapted to provide a ΔVbe of sufficiently large value that no amplification is required, and therefore any offset contribution is not gained. Using a stacked arrangement of three pairs of transistors, the invention reduces the requirement for multiple resistors within a... Agent: Wolf Greenfield & Sacks, P.C.

20070164714 - Perceptible flickering reduction: Embodiments of reducing perceptible flicker are disclosed.... Agent: Hewlett Packard Company

20070164715 - Voltage-locked loop: A system and method providing output voltage control in a power supply circuit. Various aspects of the present invention may comprise at least a first module adapted to receive an input DC voltage and at least one voltage control signal and output an output DC voltage that is a function... Agent: Mcandrews Held & Malloy, Ltd

20070164716 - Voltage regulator output stage with low voltage mos devices: Circuits and methods to provide an LDO output stage implemented with low-voltage devices and still allowing higher voltage levels have been achieved. The output stage has been built using two low voltage MOS devices in series. During the time the regulator is in active mode the second MOS device acts... Agent: Saile Ackerman LLC

20070164717 - Power factor improving circuit and switching power supply: A switching power device includes a control circuit 20 that inputs output voltage from a voltage detecting terminal a and turns ON/OFF a switching element Q1 on a basis of the output voltage, detection holding means 23, 24 that detect an abnormality when it occurs in a power-factor improvement circuit,... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070164718 - Power supply apparatus: In a power supply apparatus, in a standby mode, control signals for controlling a first MOSFET of a power supply apparatus to be turned on and a second MOSFET to be turned off are supplied to the gates of the first and second MOSFETs from a control circuit, respectively. The... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070164719 - Ripple converter: A ripple converter includes a transistor for switching an input direct-current voltage, a choke coil and a smoothing capacitor for smoothing the switched direct-current voltage, a flywheel diode for causing a current to flow through the choke coil when the transistor is turned off, and a comparing unit for controlling... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20070164720 - Switch-mode power supply controllers: This invention relates to Switch Mode Power Supply (SMPS) controllers, especially analogue controllers employing a combination of Pulse Width Modulation (PWM) and Pulse Frequency Modulation (PFM). We describe a switch mode power supply (SMPS) controller circuit for controlling a power switching device of said SMPS, the circuit including: a current... Agent: Knobbe Martens Olson & Bear LLP

20070164721 - Regulated internal power supply and method: A regulated internal power supply and method are provided. According to various embodiments, a regulated internal power supply system includes a DC to DC converter adapted to connect to an external supply voltage. The converter is further adapted to increase voltage level above a level of the external supply voltage.... Agent: Schwegman, Lundberg, Woessner & Kluth, P.A.

20070164722 - Low power beta multiplier start-up circuit and method: A circuit (200) can include a reference circuit (202) and a start-up circuit (204). A start-up circuit (204) can include a low threshold voltage reference current device (N3) that can pull a start node (210) low in a start-up operation. This can enable activation device (P3), which can place reference... Agent: Walker & Sako, LLP

20070159141 - Apparatus and method for a power converter with feed-forward voltage compensation to enable a pfc circuit: Apparatus and method for a power converter with feed-forward voltage compensation to enable a PFC circuit are proposed. A voltage divider and a feedback unit output a compensation voltage and a feedback voltage in response to an input voltage and an output voltage, respectively. The feedback voltage is compensated by... Agent: Rosenberg, Klein & Lee

20070159142 - Control circuit having error amplifier for dc-dc converter and control method therefor: A control circuit for DC-DC converters and a control method therefor wherein unstable operation in which output voltage fluctuates can be detected and the unstable operation be prevented from continuing are provided. The control circuit includes: an error amplifier ERA1 that has an inverting input terminal to which detecting voltage... Agent: Arent Fox PLLC

20070159143 - Switching power converter with transformer arrangement: A switching 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 switch is connected in between the first primary winding and... Agent: Rosenberg, Klein & Lee

20070159144 - Voltage regulator output stage with low voltage mos devices: Circuits and methods to provide an LDO output stage implemented with low-voltage devices. and still allowing higher voltage levels have been achieved. The output stage has been built using two low voltage MOS devices in series. During the time the regulator is in active mode the second MOS device acts... Agent: Saile Ackerman LLC

20070159145 - Compact voltage regulator: A voltage regulator for providing a regulated voltage is disclosed. The voltage regulator comprises an error amplifying module and a regulator. The error amplifying module provides a reference voltage, based on an output voltage to be regulated. The regulator provides a regulated output voltage based on the reference voltage. Voltage... Agent: William L Botjer

20070159147 - Constant-voltage circuit, semiconductor device using the same, and constant-voltage outputting method: A constant-voltage circuit includes a first transistor, a first control circuit, and a second control circuit having a second transistor and a differential amplifier. The first transistor controls an output current according to a first control signal output by the first control circuit such that an output voltage is substantially... Agent: Dickstein Shapiro LLP

20070159146 - Low dropout regulator: The present invention provides a low dropout (LDO) regulator with a stability compensation circuit. A “zero frequency” tracking as well as “non-dominant parasitic poles' frequency reshaping” are performed to achieve a good phase margin for the LDO by means of the compensation circuit. In this compensation method neither a large... Agent: Hogan & Hartson LLP

20070159148 - Power pump: The invention is an in-line voltage transformer. The invention converts input voltage from 9 volts to the selected output voltage. The output voltage options are 12, 18 and 24 volts. Thus allowing various signal processor or effects (requiring different voltages) to be powered from the same voltage source. The invention... Agent: Kevin Bolembach George Schwab

20070159149 - System for current sensing in switched dc-to-dc converters: A system for sensing the supply current of a switched DC-to-DC converter is discussed. The system includes a first circuit that senses a first voltage that is proportional to the supply current, wherein the first voltage has first ripple; a second circuit coupled to the first circuit, wherein the second... Agent: Sawyer Law Group LLP

20070159152 - Method and apparatus for a switch mode power supply that generates a high pulse width modulation gain while maintaining low noise sensitivity: A power supply with high pulse width modulation gain and low noise sensitivity has been disclosed. In one embodiment, a power supply includes a regulator circuit controlling a power switch. The regulator circuit includes a control input that receives a current, which is the sum of a consumption current of... Agent: Blakely Sokoloff Taylor & Zafman

20070159150 - Switching power supply device and a semiconductor integrated circuit: The present invention provides a switching power source and a semiconductor integrated circuit which realize an acquisition a sufficient driving voltage of a high-potential side switching element M1 even when a power source voltage VDD is low. In a switching power source which controls a current which flows in an... Agent: Miles & Stockbridge PC

20070159151 - Switching regulator and method for switching output voltage thereof: A switching regulator converts an input voltage to a predetermined voltage and outputs the predetermined voltage to a load through an output terminal. The switching regulator includes a first switching element, a second switching element, a control switching circuit part, and a smoothing circuit. When a first operating mode in... Agent: Dickstein Shapiro LLP

20070159153 - Power supply for a load control device: A load control device is adapted to be disposed in series with an AC voltage source and an electrical load and is operable to provide substantially all voltage provided by the AC voltage source to the load. The load control device comprises a controllably conductive device, a controller, a zero-crossing... Agent: Ostrolenk Faber Gerb & Soffen

20070159154 - Voltage regulator circuit arrangement: The invention relates to a voltage regulator circuit arrangement comprising a voltage regulator for generating an out-put voltage in dependence of a reference signal, characterized in that a reference signal generation circuit is provided for generating said reference signal comprising a plurality of inputs connected to internal terminals, whereby a... Agent: Philips Electronics North America Corporation Intellectual Property & Standards

20070159155 - Constant voltage circuit and constant current source, amplifier, and power supply circuit using the same: A constant voltage circuit is disclosed that includes a constant voltage generator circuit part converting an input voltage into a predetermined constant voltage in accordance with an externally input control signal and outputting the constant voltage; a first capacitor connected to the output end of the constant voltage generator circuit... Agent: Cooper & Dunham, LLP

20070152642 - Wireless glass-mounted lighting fixtures: A method of inductively powering light fixtures through glass or other non-ferrous material is disclosed that results in the light fixture itself not needing wires for operation, thereby simplifying and lowering the cost of the installation process, and allowing for the fixture to be completely sealed and protected. Such light... Agent: Philip G. Franklin

20070152643 - Apparatus and method for resistively controlling airflow to circuit packs: Airflow through a plurality of circuit packs is optimized by resistively limiting airflow to circuit packs determined to experience excess airflow, typically those circuit packs with lower heat-dissipating component density. Excess airflow is preferably reduced by a backpressure generation means, such as an airflow resistor connected to the circuit pack.... Agent: Mccormick, Paulding & Huber LLP

20070152644 - Ldo with slaved switching regulator: A voltage regulator is disclosed having a switching regulator portion and an LDO regulator portion on a single chip. The switching portion switches one or more transistors at a high frequency to supply a voltage to a terminal of a series transistor of an LDO regulator. A second terminal of... Agent: Patent Law Group LLP

20070152645 - Power management in a process transmitter: An industrial process transmitter for transmitting a process variable on a two-wire process control loop include, a loop current control to control a loop current level on the two-wire process control loop that is related to the process variable. Power is provided to primary circuitry of the process transmitter. A... Agent: Westman Champlin & Kelly, P.A.

20070152646 - Circuit and method for providing programmed delays for power-up sequence using a single enable pin in a voltage regulator: A circuit and methods for controlling the timing of regulated voltages supplied by a voltage regulator are provided. The circuit and method control the timing of the regulated voltages based on an enable voltage provided at an enable input of the voltage regulator. Different time delays may be provided, depending... Agent: Dorsey & Whitney LLP

20070152647 - Methods and circuits for output over-voltage reduction in switching regulators: Switching regulator Burst Mode control circuitry is provided for limiting voltage overshoot at the output of a switching regulator operating in power saving Burst Mode. The Burst Mode control circuitry may include regulator load current sensing circuitry which may be operative to put and maintain the regulator in the SLEEP... Agent: Fish & NeaveIPGroup Ropes & Gray LLP

20070152648 - Device for powering electric or electronic devices operatively associated with a circuit breaker: A device for powering one or more electric/electronic devices operatively associated with a low-voltage circuit breaker takes energy from a power supply line. An electronic regulator receives the energy collected as an input and delivering as an output to the electric/electronic device a power supply voltage (Vout) having a value... Agent: Connolly Bove Lodge & Hutz LLP

20070152649 - Semiconductor temperature sensor with high sensitivity: An temperature sensor circuit is disclosed. In one embodiment, the temperature sensor comprises an input circuit with a current mirror for forcing a current down a reference stage and an output stage. The reference stage and the output stage include P-N junctions (e.g., using bipolar transistors) with differing junction potentials.... Agent: Wong, Cabello, Lutsch, Rutherford & Brucculeri, L.L.P.