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US20150145453 POWER CONVERTING CIRCUIT  
A power conversion circuit for supplying power to an inductive load, includes a switching circuit and an energy saving circuit. The inductive load is supplied with electrical power and the energy...
US20150145452 POWER CONVERTING CIRCUIT  
A power converting circuit for supplying power to an inductive load, includes an inductance, a switching circuit and an energy saving circuit. The inductance is charged when the switching circuit...
US20110248690 POWER SUPPLY CIRCUIT FOR COMBUSTION APPLIANCE  
An electrical circuit includes a rectifier having an input for receiving an alternating current (AC) voltage and an output for supplying a first direct current (DC) voltage. The circuit also...
US20140355308 OVERNIGHT POWER ADAPTER  
Techniques and devices related to power adapters for mobile devices and, in particular, small form factor power adapters that allow a voltage droop during a power pulse exceeding a maximum output...
US20080259664 NETWORK TRANSMIT/RECEIVE PORT  
A network transmit/receive port, including transformers, a rectifying unit, a powered device controller unit, and a DC-DC converter controller, is provided. Each circuit unit is integrated in a...
US20150256097 SYSTEM FOR AMBIENT ENERGY HARVESTING  
A method and apparatus is disclosed herein for harvesting ambient energy. In one embodiment, an energy harvester comprises: a first RF rectifier to output a first voltage determined by rectified...
US20150263638 SMART POWER ADAPTOR AND METHOD FOR CONTROLLING POWER SUPPLAY THEREOF  
A smart power adaptor and a method of controlling power supply thereof are provided. The smart power adaptor includes a power conversion circuit and a control unit. The power conversion circuit is...
US20130314962 THREE-PHASE REACTOR POWER SAVING DEVICE  
A three-phase reactor power saving device, comprising: a first capacitor set, connected electrically to a three-phase AC power supply, to store electric energy; a reactor set, connected...
US20130182479 VARIABLE VOLTAGE REFERENCE IN POWER RECTIFICATION  
A power rectification system includes power electronics configured to rectify an alternating current (AC) waveform to produce a direct current (DC) output voltage, a control circuit configured to...
US20110211378 Utility for full wave rectified current-fed class of DC galvanically isolated DC-to-DC power conversion topologies allows reduction of working voltage magnitudes and improvement to efficiency for secondary circuits  
New utility of an existing class of DC galvanically isolated current sourcing circuit topologies for power conversion simultaneously allows improvement in its secondary circuit(s) to power...
US20130021830 INSULATION IN A POWER TRANSMISSION SYSTEM  
A substation has a converter comprising a first set (S1) of series connected converter valve elements provided between a first (V1) and a second (V2) potential, where the absolute value of the...
US20110306295 Voltage Regulation of Near Field Communication Communicators  
A NFC enabled device to couple inductively to the H field of an RF signal and a regulator to regulate a voltage derived from an RF signal inductively coupled to the inductive coupler. The...
US20120307535 POWER SUPPLY APPARATUS  
There is provided a power supply apparatus supplying driving power. The power supply apparatus includes: a first power converter bypassing input power when a voltage level of the input power...
US20120120690 POWER SUPPLY CIRCUIT  
A power supply circuit enabling provision of good energy efficiency and downsizing is provided. A power supply circuit 1 according to the present invention includes: input terminals 2, 2 connected...
US20110260639 POWER SUPPLY DEVICE HAVING CURRENT CONTROL CIRCUIT CAPABLE OF CORRECTING POWER FACTOR  
Disclosed herein is a power supply device capable of correcting power factor. The power supply device includes a rectification circuit, a first constant current circuit, a capacitor, and a second...
US20110255317 INTELLIGENT MULTI-STAGE VARIABLE-POWER SWITCH POWER SUPPLY DEVICE  
An intelligent multi-stage variable-power switch power supply device has an output of a bridge rectifier connected with the input of an EMI filter and the output of the EMI filter connected with a...
US20090251935 Multi-Pulse Rectifier for AC Drive Systems having Separate DC Bus Per Output Phase and Multiple Isolation Transformers  
An 18n-pulse rectifier for AC drive systems having a separate DC bus for each output phase is provided, where n=any positive integer. The rectifier uses three separate phase rectifiers, one for...
US20120287689 SYNCHRONOUS RECTIFIER DISABLING ARRANGEMENT  
A power supply receives an alternating current input that is rectified by a rectifier. The rectified output voltage is coupled to a load and a microprocessor during both a run mode operation and a...
US20080130340 Power brick with passthrough  
A power brick device has a power brick housing. A male electrical plug electrically couples AC power to an interior portion of the power brick housing. A female electrical socket is coupled to the...
US20110013434 POWER CONVERTER WITH EXTREMELY LOW STANDBY POWER CONSUMPTION  
The present invention relates to a power converter with extremely low standby power consumption. The power converter comprises a rectification module having at least one unilateral switch which...
US20090161397 COMPUTER POWER SUPPLY  
A power supply for a computer includes a transformer, a rectifier, a pulse width modulation (PWM) controller, a relay, a power switch, and a battery. The PWM controller includes a voltage terminal...
US20090309446 ELECTRIC ARC WELDING SYSTEM POWERED BY PERMANENT MAGNET ELECTRIC GENERATOR  
An electric arc welding system is powered by a power generator with a rotor assembly circumferentially surrounding a stator assembly. The arc welding system generates a three phase AC current,...
US20080247203 Energy Efficient Power Converter  
There is disclosed a power supply and method. The power supply may include a power converter for converting AC primary power into DC power, the power converter having a normal operating mode and a...
US20110122667 RECTIFIER CIRCUIT  
A high power factor rectifier circuit, provided with switching sections connected to an AC power supply for converting an AC voltage to a DC voltage, is formed with a bypass circuit provided. The...
US20110267860 POWER CONTROL SYSTEM  
A power control system includes a rectifier circuit, a buck circuit, a voltage divider circuit, a control circuit, and a switch circuit. A first terminal of the rectifier circuit is connected to...
US20130320880 RMS RESPONDING VOLTAGE CONVERTER FOR LED LIGHTS  
An RMS responding voltage converter for LED lights is disclosed.
US20070153557 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...
US20130063995 Converter Cell For Cascaded Converters And A Control System And Method For Operating A Converter Cell  
A cascaded electric power converter and a method of operating a cascaded electric power converter are disclosed. The cascaded converter includes: a converter cell including a cell capacitor and at...
US20140369100 RECTIFIER CIRCUIT  
A rectifier circuit includes an inductor connected to AC inputs of a diode bridge circuit, a capacitor series circuit connected to a DC output, and bi-directional switches that are connected...
US20090285000 ADAPTER WITH TRANSFORMATIVE COMPONENT  
An adapter for removably coupling a consumer electronic device to a host, with the adapter supplying a first service between the host and the consumer electronic device when the adapter is coupled...
US20080309162 SYNCHRONOUS RECTIFIER CIRCUIT AND MULTI-OUTPUT POWER SUPPLY DEVICE USING THE SAME  
A synchronous rectifier circuit and a multi-output power supply device using the same include a semiconductor switch to control a current flow of the synchronous rectifier circuit, and a switching...
US20070109826 Lus semiconductor and synchronous rectifier circuits  
The Lus Semiconductor in this invention is characterized by replacing the static shielding diode (SSD) of traditional Power Enhancement Mode field Effect Transistor (EMFETs) with polarity reversed...
US20110157939 POWER ADAPTER APPARATUS AND POWER MANAGEMENT METHOD  
A power adapter apparatus and a power management method thereof are disclosed in the invention. The power adapter includes an output interface and a power modulation unit. The power adapter can be...
US20140197764 DEVICE FOR STABLE SUBSEA ELECTRIC POWER TRANSMISSION TO RUN SUBSEA HIGH SPEED DC MOTORS OR OTHER SUBSEA DC LOADS  
Device for operative connection between a subsea step out cabie far end and subsea toads such as pumps, compressors and control systems, distinctive in that the device is a subsea DC provider...
US20130088903 CONTROL ARCHITECTURE FOR A MULTI-LEVEL ACTIVE RECTIFIER  
The present invention is a control architecture for an active rectifier. The control architecture monitors the AC input voltage provided to the active rectifier at a sampling rate grater than the...
US20090116269 Power supply with reduced power consumption when a load is disconnected from the power supply  
Detection and control circuitry are added to a conventional power supply to detect when a load, such as a portable electronic device, has been disconnected from the power supply and, when...
US20110228576 Mains Plug Component  
The invention relates to a mains plug component with a housing and a mains switch component arranged in the housing comprising a first stage for rectifying a mains AC voltage and a second stage...
US20120242267 DEVICE FOR CONTROLLING A PLURALITY OF ELECTRICAL CONSUMERS  
A device for controlling a plurality of electrical consumers to which a constant control current is applied at control nodes. A transformer unit to which a regulated and/or constant current having...
US20080013352 Active rectifier system with power factor correction  
A polyphase alternating current (AC) active rectifier system converts polyphase AC from an AC source to direct current (DC) on a DC bus comprising a positive DC bus line and a negative DC bus line...
US20090303760 Resonant transformer systems and methods of use  
Resonant transformer systems and methods of use are described. One aspect may include a primary winding, a secondary winding, and at least one output winding. In further aspects, a transformer may...
US20120155613 METHOD AND SYSTEM FOR ACTIVE RESONANT VOLTAGE SWITCHING  
Methods and systems for active resonant voltage switching are provided. One active resonant switching system includes a voltage switching system having one or more active resonant modules to...
US20120195082 Systems and Methods for High Speed Power Factor Correction  
Systems and methods described herein provide for high speed power factor correction which can overcome or substantially alleviate the problems associated with changes in the operating conditions...
US20140016385 ENERGY RECYCLING DEVICE  
The present invention is related to an energy recycling device. The energy recycling device includes a substrate, multiple miniature receivers, for receiving infrared radiation, on the substrate...
US20090034305 Power Conversion Device and Power Conversion System  
A power conversion device includes input terminals, first output terminals, second output terminals, and an insulation transformer. The insulation transformer includes a primary coil and a...
US20120242168 POWER-OVER-ETHERNET RELAY SYSTEM, POWER INJECTOR AND ACCESS BRIDGE DEVICE  
A PoE relay system includes a networking cable, a PoE power injector and a PoE access bridge device. The PoE power injector is coupled to a PoE powering apparatus to receive network data and...
US20050041447 Power supply for battery-powered devices  
A power supply is disclosed which includes a transformer unit for converting AC voltage to DC voltage. An end effecter is provided and is electrically connected to the transformer unit for...
US20090180305 Multi-parallel magnetic-field cancellation type transformer  
A multi-parallel magnetic-filed cancellation type transformer includes a plurality of coils which generate magnetic flux during energization and a core having a plurality of magnetic leg portions...
US20110305054 BI-DIRECTIONAL SWITCH, ALTERNATING-CURRENT TWO-WIRE SWITCH, SWITCHING POWER SOURCE CIRCUIT, AND METHOD OF DRIVING BI-DIRECTIONAL SWITCH  
A semiconductor device 101 in a bi-directional switch includes: a first electrode 109A, a second electrode 109B, a first gate electrode 112A, and a second gate electrode 112B. In a transition...
US20110286250 POWER ADAPTATION DEVICE AND POWER SUPPLY MANAGEMENT METHOD  
A power adaptation device and a power supply management method thereof are provided. The power adaptation device includes a terminal seat, a detection structure, a detection unit, an electric...
US20070035974 Short-circuit control in the inductance of a voltage step-up converter  
The protection of an inductance of a voltage step-up converter, comprising a first switch with an inverted input logic between the inductance and a terminal of connection of a load to be supplied,...

Matches 1 - 50 out of 119 1 2 3 >