Electricity: power supply or regulation systems inventions 05/06

20060108988 - Power supply system: A power supply system for supplying power to a load is provided. The system comprises power-line carriers for supplying power to the load, and a plurality of power supply units the outputs of which are parallelly connected to power-line carriers. Each of the power supply unit comprises a generator; an...

20060108989 - Control of parallel-connected voltage regulators for supplying power to integrated circuit: An apparatus includes a first voltage regulator that is controlled to provide an output voltage that matches a reference voltage. The apparatus further includes a second voltage regulator that is coupled to an output of the first voltage regulator and controlled to minimize a current output from the first voltage...

20060108990 - Linearly regulated power supply: A linearly regulated power supply is provided for providing a load voltage to a load. In a preferred embodiment, the linearly regulated power supply includes: a voltage divider module for receiving a backup voltage and then providing a voltage reference; a controlling module for receiving the voltage reference and then...

20060108991 - Linear voltage regulator: A linear voltage regulator is provided for providing an output voltage to a load. In a preferred embodiment, the linear voltage regulator comprises: an operational amplifier receiving a regulated voltage, and a first voltage reference, and providing a driving voltage; a first regulating transistor driven by the driving voltage, the...

20060108992 - System for regulating the level of an amplified signal in an amplification chain: This invention relates to a regulating system for regulating, with respect to a reference level (Vref), the level of an amplified signal (108), said regulating system comprising: -attenuation means (201) for generating an attenuated signal (202) from said amplified signal (108) according to a programmable attenuation factor, -conversion means (203)...

20060108993 - Voltage regulator circuit with a low quiescent current: A voltage regulator circuit with a low quiescent current for generating a stable output voltage includes a standby mode controller for generating an enable signal according to a standby signal, a reference voltage generator for receiving an operation voltage and generating a reference voltage, an amplifier for receiving the reference...

20060108994 - Low voltage bandgap reference circuit with reduced area: A CMOS bandgap reference (BGR) voltage generator circuit has a passive resistor T-network of low resistance connected between the inverting and non-inverting inputs of the op-amp in the circuit. The op-amp's output is connected to the gates of three PMOS transistors and the drains of two of the transistors are...

20060103359 - Dc/dc converter: Voltage-boosting/lowering DC/DC converter includes a low-voltage-side port and high-voltage-side port, an inductor connected at one end to a positive-pole terminal of the low-voltage-side port, and a transformer of a magnetic-field cancellation type including a primary winding and secondary winding interconnected in an oppositely-wound configuration, a common terminal of the primary...

20060103360 - Method and apparatus for controlling power drawn from an energy converter: Methods, apparatus, media and signals for controlling power drawn from an energy converter to supply a load, where the energy converter is operable to convert energy from a physical source into electrical energy. Power drawn from the energy converter is changed when a supply voltage of the energy converter meets...

20060103361 - Linear voltage regulator: A linear voltage regulator provides a regulated load voltage to a load. In a preferred embodiment, the linear voltage regulator includes: a regulating circuit for receiving an input voltage and providing an output voltage to a load, the regulating circuit being driven by a driving voltage; and two resistors connected...

20060103364 - Device for power factor correction in forced switching power supply units: A device for power factor correction in a forced switching power supply unit is provided. The device includes a converter and a control device coupled to the converter so as to obtain from an input alternating mains voltage a direct regulated voltage on the output terminal. The converter includes a...

20060103362 - Frequency stabilization technique for self oscillating modulator: With self oscillating pulse width modulators, using a hysteretic comparator to change the output duty cycle according to the input signal, as often used for example for Class-D amplifiers or switching regulators, the frequency varies with output power and supply voltage. The disclosed invention presents a method to drastically reduce...

20060103363 - High efficiency dc-to-dc synchronous buck converter: A DC-to-DC power regulator circuit, such as a synchronous buck DC-to-DC converter circuit, having improved efficiency. A power stage is provided, having an input port for receiving a DC input voltage and having an output port for providing a regulated DC output voltage. The power stage includes a control FET...

20060103365 - Method and converter circuitry for improved-performance ac chopper: A system and method for single phase AC power conversion for delivery to a load of AC voltage less than or equal to the supply voltage. The system includes a high frequency chopper converter having a series diode-switch assembly and a shunt diode-switch assembly. During intervals when the inductor carries...

20060103366 - Method and apparatus for designing a transformer: Various techniques directed to the design and construction of transformers are disclosed. In one aspect, a method according to embodiments of the present invention includes loading parameters of a transformer included in a power supply design, calculating primary winding parameters of the transformer in response to the loaded parameters of...

20060097704 - Voltage regulator and method using substrate board with insulator layer and conductive traces: A voltage regulator includes a voltage regulator body and connectors carried by the body, which connect to devices controlled by the voltage regulator. A substrate board is received in a board receiving cavity of the voltage regulator body and includes a metallic base layer, an insulator layer on the metallic...

20060097706 - Dc-dc converter: A DC-DC converter is used for raising input voltage, and has a substrate forming a plurality of conductive pins, and a circuit system formed on the substrate and appropriately coupled to the conductive pins. The circuit system includes a step-up circuit coupled in series to a MOSFET with threshold voltage...

20060097707 - Power control circuit for charge storage element: A DC voltage source, a switch, and an inductor are connected together in series. The inductor is also connected together with a switch, a piezoelectric element in series. Moreover, the switches are connected in parallel with capacitors. By the control circuit, a state in which either of the switches is...

20060097705 - Switch-mode power supply voltage regulator and methodology: Pulse width modulation of the connection of a load output terminal to a power supply terminal is effected. In response to a first level of the pulse width modulated signal, the load is disconnected from the power supply terminal, steady-state load voltage is preserved on a capacitor connected between a...

20060097708 - Systems and methods for dynamically affecting power dissipation in a disk drive including a fixed output voltage regulator: A disk drive system includes a fixed output voltage regulator including an output terminal that provides a substantially fixed output voltage. A plurality of loads, each includes a voltage supply terminal. A programmable resistor bank which is adapted to selectively provide a plurality of different resistances, is connected in series...

20060097709 - Linear voltage regulator: A linear voltage regulator is provided for providing an output voltage to a load. In a preferred embodiment, the linear voltage regulator includes: a pass element for receiving an input voltage and providing an output voltage to a load, the pass element being adapted to be controlling by a controlling...

20060097710 - Current sensing circuitry for dc-dc converters: An inductor based DC-DC converter of the present invention employs two power switches such that only a fraction of inductor current flows through sensing circuitry. The sensing circuitry itself is comprised of sense transistors instead of resistors in order to further reduce power dissipation and temperature variations. The sensing circuitry...

20060097711 - Dc-dc converter having magnetic feedback: A DC-DC converter suitable for multiple converter circuit topologies is disclosed. The DC-DC converter utilizes magnetic feedback of the output load current to provide broad inductance control of a magnetic element, while inhibiting saturation of the switched winding or windings of the magnetic element....

20060097712 - Method for controlling the output value of a load system and switching power supply: A method and switching power supply for controlling the output value of a load system with an input value that varies in dependency of the load mode and other influences of the load system, using a control device, an energy storage means and a hysteresis comparator that compares the actual...

20060091865 - Power control subsystem for powering a node over communication cabling: A power control subsystem for controlling the supply of power transmitted to at least one node over communication cabling, the power control subsystem comprising circuitry to control current of a power transmitted over communication cabling, the circuitry being operative to provide current limiting for the power at a first threshold,...

20060091866 - Power circuit: In a power circuit which makes phase compensation by utilizing ESR of an output capacitor, a feedback signal based on an output voltage is supplied by a coupling capacitor to an N-channel MOS transistor on a saturated coupling side of a current mirror circuit inside an error amplification circuit....

20060091869 - Method of and system for regulating a power supply: A method of and system for regulating a power supply includes measuring an inductor ripple current within the power supply, and producing an active voltage positioning offset voltage for compensating an output voltage. The active voltage positioning offset voltage is based in part on the measured inductor ripple current....

20060091867 - Power converter: The invention relates to a power converter comprising an inductor 6 for receiving energy from a power supply 1, and connected to the inductor 6 an output capacitor 7 for providing an output voltage. In order to ensure a quick compensation of a reduction of load at the voltage output...

20060091870 - Switching power supply device and switching power supply system: There is provided a switching power supply device of hysteresis current mode control system which assures excellent response characteristic for change of output current and reduction of power consumption. In a switching regulator of hysteresis current mode control system, a sense resistor connected in series to a coil is eliminated,...

20060091868 - Switching regulator frequency control: A system may include a voltage controller to provide a control signal, a voltage converter to receive the control signal and to change a value of an output voltage in response to the control signal, and an evaluation circuit to determine that a threshold associated with a pulse width of...

20060091871 - Integrated zvs synchronous buck dc-dc converter with adaptive control: DC-DC converters are disclosed that can be integrated onto a semiconductor device. In one embodiment, the invention includes a first MOSFET and a second MOSFET, where the drain of the first MOSFET forms a common node with the drain of the second MOSFET. In addition, a controller is connected to...

20060091872 - Switching power supply control device and switching power supply: A switching power supply comprises a switching device, a smoothing circuit, and a control circuit including a current detector for detecting a current flowing through an inductor in the smoothing circuit. The detected current is multiplied by a current control gain to generate a signal PIS. The rectangular wave signal...

20060091873 - Generating a bias voltage: An apparatus includes a first voltage reference circuit, a second voltage reference circuit and a third circuit that is coupled to the second voltage reference circuit. The first voltage reference circuit provides a first reference voltage between a terminal of the first voltage reference circuit and a first power line....

20060091874 - Sawtooth wave generating apparatus, a method of generating sawtooth wave, a constant current circuit, and a method of adjusting amount of current from the same: A sawtooth wave generating apparatus 1 includes a base frequency generating section 10 and a frequency generating section 20 for generating the frequency of a reference signal, a sawtooth wave forming section 30 which forms a sawtooth wave based on the reference signal, a voltage comparator 60 which compares the...

20060091875 - Reference voltage circuit: A reference voltage circuit includes a first current-voltage converting circuit consisting of a first diode element; a second current-voltage converting circuit consisting of first and second resistances and a second diode element; a third resistance; a first current mirror circuit configured to supply the third resistance with a current which...