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| Application No. | Application Title | Issue Date |
| 20120127765 | CONTACTLESS POWER TRANSFER SYSTEM AND CONTROL METHOD THEREOF A contactless power transfer system, including a coil configured to supply or receive power contactlessly via magnetic coupling, a bridge circuit having two direct current (DC) terminals and two alternating current (AC) terminals, and a smoothing capacitor connected bet... | 05/24/2012 |
| 20120127766 | CONFIGURABLE HYBRID CONVERTER CIRCUIT A circuit for a hybrid voltage source converter suitable for high voltage DC power transmission and reactive power compensation. The circuit comprises an assembly of electrically interconnected elements (Elements 1 to 20) including a plurality of first ele... | 05/24/2012 |
| 20120127707 | VERSATILE SEALED LED LAMP A lamp assembly (1800) may include a circuit board (201), one or more light-emitting devices (100) disposed on the circuit board (201), a heat sink (600) in thermal contact with a surface of the circuit board (201), a gasket ( 05/24/2012 | |
| 20120104966 | DRIVE CIRCUIT FOR LIGHT EMITTING DIODE ARRAY BASED ON A BUCK-BOOST TOPOLOGY Features of the invention are related to drive circuits that provide both power factor correction and voltage conversion in a single circuit and in some implementations drive an LED array. This single stage converter uses a buck-boost topology and can operate LED arrays... | 05/03/2012 |
| 20120106216 | AC-DC CONVERTER WITH UNITY POWER FACTOR A method for construction of voltage or current power sources receiving an AC input, the power sources based on inclusion of a buffer stage feeding a converter operating with an output driver to a load. The buffer stage includes a buffer capacitance and a control means,... | 05/03/2012 |
| 20120104859 | POWER CONVERSION DEVICE There is provided a power conversion device having no limitation on a voltage on each of an input side and an output side, being compact, and involving a low loss. The power conversion device is characterized by including: a rectifying unit... | 05/03/2012 |
| 20120106217 | CURRENT CONTROLLED POWER CONVERTER A current controlled power converter includes a converting part configured to convert a three-phase ac voltage into a dc voltage or converts a dc voltage into a three-phase ac voltage, ac side current detection portions configured to detect an ac side current of the con... | 05/03/2012 |
| 20120081027 | Full Wave Current Sense Rectifier A current sense rectifier circuit comprises an assembly input terminal for receiving a current input signal having an alternating current (AC) waveform. A negative half-wave circuit generates a first input signal representative of negative portions of the current input ... | 04/05/2012 |
| 20120081939 | Arrangement For Exchanging Power An arrangement for exchanging power, in shunt connection, with a three-phase electric power network includes a Voltage Source Converter having at least three phase legs with each a series connection of switching cells. Each switching cell has at least two semiconductor ... | 04/05/2012 |
| 20120069615 | BRIDGELESS POWER FACTOR CORRECTION CONVERTER A bridgeless power factor correction converter is configured such that a gate driver controls the ON ratio of a booster converter switch so that the ON ratio is gradually increased from 0, i.e., performs soft start control, every time the voltage polarity of an AC input... | 03/22/2012 |
| 20120069616 | SWITCHING POWER SUPPLY DEVICE, AND ADJUSTABLE POWER SUPPLY SYSTEM INCLUDING THE SAME According to one embodiment of the invention, there is provided a switching power supply device including a rectifying circuit and a switching operation conversion circuit. The rectifying circuit receives a phase-controlled alternating voltage to rectify to a direct vol... | 03/22/2012 |
| 20120051108 | CURRENT RIPPLE REDUCTION POWER CONVERSION CIRCUITS A circuit used to convert DC input to AC output comprises a transformer and three series sub-circuits. The first series sub-circuit is connected in parallel with the DC input and comprises first and second capacitors connected in series. The secondary series sub-circuit... | 03/01/2012 |
| 20120049955 | COMPOUND SEMICONDUCTOR DEVICE, METHOD OF MANUFACTURING THE SAME, POWER SUPPLY DEVICE AND HIGH-FREQUENCY AMPLIFIER A compound semiconductor device includes a substrate having an opening formed from the rear side thereof; a compound semiconductor layer disposed over the surface of the substrate; a local p-type region in the compound semiconductor layer, partially exposed at the end o... | 03/01/2012 |
| 20120051107 | METHOD AND APPARATUS FOR BRIDGELESS POWER FACTOR CORRECTION This document discusses, among other things, an improved bridgeless power factor correction (PFC) circuit. In an example, the PFC circuit can include a first switch and a control circuit, the control circuit configured to provide a switching cycle, to generate a carrier... | 03/01/2012 |
| 20120044729 | BRIDGELESS COUPLED INDUCTOR BOOST POWER FACTOR RECTIFIERS A bridgeless power factor correction system may include an AC input having a first input terminal and a second input terminal, an inductor module coupled with the first input terminal, and a switching module coupled between the second input terminal and the inductor mod... | 02/23/2012 |
| 20120044728 | ELECTRIC POWER CONVERTER In aspects of the invention, first and second series circuits of switching devices and a series circuit of capacitors are connected in parallel. Between the connection point in the first series circuit of switching devices and the connection point in the series circuit ... | 02/23/2012 |
| 20120044230 | DISPLAY APPARATUS, POWER SUPPLY APPARATUS AND POWER SUPPLY METHOD THEREOF A display apparatus, a power supply apparatus and a power supply method thereof are provided. The display apparatus includes: a signal processor which processes an image signal; a display unit which displays thereon an image corresponding to the processed image signal; ... | 02/23/2012 |
| 20120039103 | SINGLE-STAGE AC/DC CONVERTER A single-stage AC/DC converter is provided, and which includes a power-frequency follow-current circuit, an isolated transmission circuit (ITC), a high-frequency chopper modulation circuit (HFCMC), a power-frequency and high-frequency AC rectifying-circuit and a filter-... | 02/16/2012 |
| 20120033471 | TWO-WIRE DIMMER SWITCH FOR LOW-POWER LOADS A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling... | 02/09/2012 |
| 20120032649 | Power Supply for a Load Control Device A power supply for a load control device generates a DC voltage and provides an asymmetrical output current, while drawing a substantially symmetrical input current. The power supply comprises a controllably conductive switching circuit for controllably charging an ener... | 02/09/2012 |
| 20120026768 | FACILITY POWER SUPPLY WITH POWER-FACTOR CORRECTION An embodiment of a power supply includes an input node, a converter stage, and an outlet. The input node is operable to receive an input AC signal having peak portions and non-peak portions. The converter stage is operable to generate a DC power signal from the input AC... | 02/02/2012 |
| 20120020133 | SWITCH CONTROL DEVICE, POWER SUPPLY DEVICE COMPRISING THE SAME AND SWITCH CONTROL METHOD Provided are a switch control device and a switch control method. The present invention generates power voltage required to operate the switch control device by using full-wave current rectification voltage generated by rectifying an AC input and detects a zero cross-po... | 01/26/2012 |
| 20120020132 | POWER CONVERSION SYSTEM WITH ZERO-VOLTAGE START-UP MECHANISM, AND ZERO-VOLTAGE START-UP DEVICE A power conversion system with zero-voltage start-up mechanism and a zero-voltage start-up device are disclosed. The system includes a power conversion circuit, a power factor correction unit, a storage capacitor, a storage switching unit, and a zero-voltage detection m... | 01/26/2012 |
| 20120020131 | POWER APPARATUS AND METHOD OF SUPPLYING POWER The present invention provides a power apparatus, which includes a switch unit, a bleeder resistor, a filter, a rectifier, a power factor corrector, an output capacitor, a rectifying diode, a surge absorber, a main power supply, and a standby power supply. Moreover, the... | 01/26/2012 |
| 20120020121 | CURRENT DETECTION CIRCUIT AND SWITCHING REGULATOR CIRCUIT A current detection circuit that includes a winding part including a core provided on a switching element and a lead wire which is wound around the core, and a signal generation unit configured to generate a signal with a value having correlation to a current passing th... | 01/26/2012 |
| 20120020134 | SWITCH CONTROL DEVICE, POWER SUPPLY DEVICE COMPRISING THE SAME AND SWITCH CONTROL METHOD Provided are a switch control device, a switch control method, and a power supply device.
| 01/26/2012 |
| 20120020130 | Series Power Module A power module includes a switch portion operative to switch an alternating current (A/C) voltage, a rectifier portion operative to receive the switched A/C voltage, rectify the switched A/C voltage, and output a direct current (D/C) voltage, a power control module oper... | 01/26/2012 |
| 20120014152 | METHOD FOR CONTROLLING SWITCHING POWER UNIT There is provided a method for controlling a switching power unit that converts AC input voltages of an AC source into a DC voltages while improving a power-factor of the AC input voltages, the switching power unit comprising an AC/DC converter circuit that is composed ... | 01/19/2012 |
| 20120013187 | METHOD AND CIRCUIT FOR CURRENT BALANCE This disclosure presents method and circuit for current balance. An AC signal or a DC signal is applied to a circuit to source current to loads. A capacitor is configured to balance the current in loads. By matching the charging time and the discharging time of the bala... | 01/19/2012 |
| 20120008354 | DISCHARGE LOOP FOR POWER SUPPLY CIRCUIT AND ACTIVE CONTROL CIRCUIT THEREOF Provided is a discharge loop for power supply and the active control circuit thereof for actively regulating the discharging operation of the discharge loop of the power supply. The inventive active control circuit is able to disallow the current to flow through the ble... | 01/12/2012 |
| 20120008355 | PASSIVE THREE PHASE INPUT CURRENT HARMONIC REDUCTION AND POWER FACTOR CORRECTION CIRCUIT FOR POWER SUPPLIES A harmonic input current reduction and power factor correction circuit for three phase, power supplies. The circuit includes passive elements including a series inductance and capacitor connected between each AC line of a three phase voltage source, and each input phase... | 01/12/2012 |
| 20110317459 | CONTROLLER FOR A POWER CONVERSION CIRCUIT A power conversion controller for controlling the operation of a switch in a power conversion circuit. The switch having a “time-on” property and a “clamping frequency” property, in use. The power conversion controller comprises a detector configured to detect o... | 12/29/2011 |
| 20110316444 | POWER SOURCE UNIT AND LIGHTING FIXTURE According to one embodiment, there is provided a lighting fixture including a fixture body, straight-tube type LED lamps each having semiconductor light emitting elements, and a dedicated power source for lighting the semiconductor light emitting elements. The dedicated... | 12/29/2011 |
| 20110310647 | REDUNDANT PARALLEL NON-ISOLATED INPUT CONVERTERS A redundant AC-DC power supply system and method is disclosed. A first AC-DC power converter is configured to generate a first output voltage and a first relay is configured to selectively couple and decouple the first AC-DC power converter to an output of an output cir... | 12/22/2011 |
| 20110310646 | CIRCULATING CURRENT DETECTION FOR REDUNDANT POWER SUPPLY A system and method for detecting a circulating current in a redundant AC-DC power supply is disclosed. In one embodiment, a redundant AC-DC power supply system can include a first AC-DC power converter that is configured to generate a first DC output. A second AC-DC po... | 12/22/2011 |
| 20110292702 | METHOD AND APPARATUS TO IMPROVE DYNAMIC RESPONSE OF THE SYNCHRONOUS RECTIFYING FOR RESONANT POWER CONVERTERS A synchronous rectifying circuit for a switching power converter is provided. The synchronous rectifying circuit includes a power transistor, a diode, and a control circuit. The power transistor and the diode are coupled to a transformer and an output of the power conve... | 12/01/2011 |
| 20110291488 | SYSTEM FOR SELF-POWERED, WIRELESS MONITORING OF ELECTRICAL CURRENT, POWER AND ENERGY According to one aspect, embodiments of the invention provide a system for monitoring at least one circuit branch coupled to a power line, the system comprising at least one first module comprising a Current Transformer (CT) configured to be coupled to the at least one ... | 12/01/2011 |
| 20110292703 | Single-stage AC-to-DC converter with isolation and power factor correction A new class of Single-Stage AC-DC converters with built-in Isolation and PFC feature is introduced along with the companion hybrid switching conversion method. Several different converter topologies are introduced, which all feature three switches only, single magnetic ... | 12/01/2011 |
| 20110292704 | SEMICONDUCTOR DEVICE AND POWER SUPPLY DEVICE A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor ... | 12/01/2011 |
| 20110286251 | POWER SUPPLY DEVICE A power supply device includes: a magneto generator with a rotor having a magnet; a torque supplying device supplying torque to the rotor; a rectifier circuit supplying electric power to a electrical load device by rectifying an output of the magneto generator; a short ... | 11/24/2011 |
