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US20140177307 POWER FACTOR IMPROVEMENT CIRCUIT  
A power factor improvement circuit is configured with two series circuits each having a switching element and a rectifying element connected in series. Two input terminals of a single-phase AC...
US20140177295 PHASE SHIFT CIRCUIT AND POWER FACTOR CORRECTION CIRCUIT INCLUDING THE SAME  
There are provided a phase shift circuit and a power factor correction circuit including the same. The phase shift circuit includes a switching circuit unit charging power in or discharging power...
US20130128637 POWER RAIL REGULATOR SYSTEM  
A power regulators system and method is disclosed. In one embodiment, a power regulator system (10) is provided and includes at least one power supply (16) each configured to convert a DC rail...
US20120044718 POWER CONVERTERS  
A power converter for delivering power to a load at a regulated voltage 11 includes a regulating stage receiving an unregulated supply 10 and having a main transformer 18. Switches 16a and 16b are...
US20110261598 POWER CONVERTER WITH MULTI-LEVEL VOLTAGE OUTPUT AND HARMONICS FILTER  
A device for converting a DC voltage into an AC voltage and vice versa comprises at least one phase leg with a first voltage source and a first inductor connected in series between a first DC...
US20130343110 Inverter, Sealing Air Duct and Heat Dissipation System  
An inverter, a sealing air duct, and a heat dissipation system are disclosed. The inverter includes: an enclosure having a first cavity and a second cavity that are isolated from each other and...
US20140321170 INTEGRATED PRIMARY STARTUP BIAS AND MOSFET DRIVER  
Some implementations are directed to a A DC-to-DC converter that includes a power transformer having a primary side and a secondary side and a plurality of power transistors coupled to the primary...
US20130285460 POWER ADAPTER HAVING PROGRAMMABLE GAIN COMPENSATION TRIM  
A power adapter to supply power at an output. The power adapter has a programmable gain compensation trim function. In some examples, the gain compensation trim function is a negative gain...
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...
US20130088902 PROPORTIONAL BIAS SWITCH DRIVER CIRCUIT  
A switch bias system is provided that includes a bipolar junction transistor (BJT) switch comprising a base, emitter, and collector; a current sense circuit coupled to the emitter, the current...
US20140268941 REACTIVE POWER BALANCING CURRENT LIMITED POWER SUPPLY FOR DRIVING FLOATING DC LOADS  
A capacitance based reactive power balancing current limited power supply (RPBCLPS) for driving floating DC loads utilizes capacitive reactance to limit current being supplied to a load, rather...
US20140339890 INVERTER AND POWER SYSTEM WITH FUSE PROTECTION  
A power conversion system includes a bus bar, a switch coupled to the bus bar and configured to receive a DC input voltage from a voltage source through the bus bar, and a parallel fuse system. The...
US20140146587 POWER MODULE WITH A MULTI-RESONANCE CIRCUIT (EMBODIMENTS)  
The invention relates to power electronics. The use of said invention in autonomous inverter and pulse regulator circuits makes it possible to reduce dynamic losses and additional losses of...
US20120243268 Transformers and Methods For Constructing Transformers  
Transformers and methods of constructing transformers are disclosed. In one embodiment, a method of constructing a transformer includes wrapping a first primary winding around a core, wrapping a...
US20120262948 PHOTOVOLTAIC MODULE  
A photovoltaic module includes: a solar cell module including a plurality of solar cells; and a junction box including a capacitor unit attached to one face of the solar cell module and that to...
US20110182088 QUASI-RESONANT POWER SUPPLY CONTROLLER AND METHOD THEREFOR  
In one embodiment, a quasi-resonant power supply controller is configured to select particular valley values of a switch voltage to determine a time to enable a power switch. The valleys values are...
US20140167661 POWER CONVERSION SYSTEM  
This disclosure relates to a power conversion system to power a variable impedance load with a variable power source, the power conversion system comprising a power converter including input...
US20120201064 POWER CONVERTER  
A power converter includes a booster circuit, an inverter circuit, a hysteresis control circuit, and a proportional-integral control circuit. The booster circuit boosts DC power of a DC power...
US20080123373 CURRENT FED POWER CONVERTER SYSTEM INCLUDING NORMALLY-ON SWITCH  
A system includes an energy source configured for operating as a current limited source and a DC-to-DC converter or current switched inverter configured to receive current from the energy source...
US20130314952 SINGLE-PHASE REACTOR POWER SAVING DEVICE  
A single-phase reactor power saving device, used to receive an AC power supply, and comprising: a first capacitor, connected electrically to said AC power supply, to store electric energy; a first...
US20110211369 LOW OUTPUT VOLTAGE CONVERTER UTILIZING DISTRIBUTED SECONDARY CIRCUITS  
Embodiments of the present invention relate to a low-output voltage converter, delivering voltage power less than 1 VDC, utilizing distributed secondary circuits. In one embodiment of the present...
US20140226382 POWER CONVERSION DEVICE  
An electric power conversion device comprises a conversion circuit having bi-directionally switchable plural pairs of switching elements connected to respective phases and converting an inputted AC...
US20110080760 Rectifier driving circuit  
A rectifier driving circuit of the present invention, has a first driving element and a second driving element, switching element comprises a FET, a first driving element comprises the voltage drop...
US20120026759 ULTRA LOW STANDBY CONSUMPTION IN A HIGH POWER POWER CONVERTER  
A power converter with low power consumption during a standby operating condition. An example power controller includes a main converter coupled to a dc input of the power converter to control a...
US20110103101 INTEGRATED CONTROL CIRCUIT FOR CONTROLLING A SWITCHING POWER SUPPLY, SWITCHING POWER SUPPLY INCORPORATING THE SAME, AND A METHOD OF CONTROLLING A SWITCHING POWER SUPPLY  
An integrated control circuit for controlling a switching power supply, a switching power supply incorporating the same, and a method of controlling the switching power supply, where the control IC...
US20140340941 DROOP CURRENT SHARING POWER CONVERTER WITH CONTROLLED TRANSITIONS BETWEEN REGULATION SET POINTS  
A regulated switching power converter generates a converter output having first and second regulated output values under corresponding operating conditions. The converter output transitions between...
US20080144344 Static Inverter With Hardened Environmental Housing  
A static inverter assembly including a housing, a heat sink connected to the housing to define an enclosed three-dimensional volume, the heat sink including at least one channel extending...
US20120182770 POWER CONVERTER  
The power converter includes a diode rectifier which rectifies alternating current power output from an alternating current power supply, a reactor provided between the alternating current power...
US20110038190 CONTROLLED CONTACTLESS POWER TRANSMISSION  
An inductive coupled power transmission circuit has a rotating transformer, including an AC voltage supply for feeding an AC voltage via a series capacitor into the primary winding of said rotating...
US20140211518 LOW TOTAL HARMONIC DISTORTION AND HIGH POWER FACTOR CORRECTION POWER CONVERTERS  
A controller circuit for the control of a power converter is disclosed. An example controller circuit generates a waveform that drives a switch that controls the power converter. The controller...
US20120120696 Power Factor Correction Converter  
[OBJECT] A PFC converter is provided in which a smoothing capacitor can be small in size and a power supply circuit connected to the subsequent stages can be simple, efficient, low-cost, small in...
US20070230226 Multilevel intelligent universal auto-transformer  
A power conversion device includes a first switched converter circuit coupled to a device input and a second switched converter circuit coupled to the first switched converter circuit and a device...
US20100296326 Power Circuit With Passthrough  
A power circuit device has a housing. A connection electrically couples AC power to an interior portion of the housing. A female electrical socket is coupled to the housing and is electrically...
US20120262958 POWER FACTOR CORRECTION CIRCUIT  
A power factor correction circuit is provided which may include a first switched-mode converter circuit comprising a first inductor, at least one second switched-mode converter circuit having a...
US20130181635 LED Driver with Primary Side Sensing  
The disclosed switching regulator, including a controller for a switching regulator, is adaptable to supplying, or controlling the supply of, regulated current to a load that is isolated from a...
US20130114321 INVERTER TOPOLOGY CIRCUIT, INVERSION METHOD AND INVERTER  
An inversion method and an inverter, in which a fifth switch tube, a sixth switch tube, a fifth diode, a sixth diode, and a first capacitor are added in the existing inverter circuit including a...
US20120307536 SYNCHRONOUS RECTIFIER DRIVER CIRCUIT RECTIFIER  
A synchronous rectifier includes a primary rectifier circuit and a secondary rectifier circuit. The primary rectifier circuit is configured to produce first and second half-rectified signals from...
US20130336024 Power Conversion System Including Two Transformers with Two Secondary Windings, and Drive Chain Comprising Such a Conversion System  
The power conversion system comprises: a first transformer adapted to be connected to an AC network, the first transformer including a first primary winding and two first secondary windings, andtwo...
US20150062990 CIRCUIT ARRANGEMENT AND METHOD FOR CONVERTING AND ADAPTING A DC VOLTAGE, PHOTOVOLTAIC INSTALLATION  
The present invention relates to a circuit arrangement for electrical installations for converting and adapting a DC voltage of a voltage source, more particularly for a solar inverter of a...
US20060176720 Rotating rectifier with strap and diode assembly  
The present invention is a rectifier assembly having three phase straps with two diodes mounted to each phase strap. The rectifier assembly also includes a first support and a second support, which...
US20140029319 RECTIFIER MODULE FOR POWER CONVERSION CIRCUITS  
A rectifier module comprises a conductive housing made of injection molded aluminum or aluminum alloy. Diodes are inserted into recesses formed in the housing. The housing is placed at an...
US20110188277 CIRCUIT CONFIGURATION WITH A STEP-UP CONVERTER, AND INVERTER CIRCUIT HAVING SUCH A CIRCUIT CONFIGURATION  
An inverter circuit contains a first and second DC sources for providing a DC voltage, a common step-up converter for boosting the DC voltage, an intermediate circuit capacitor connected between...
US20130094267 EVEN-LEVEL INVERTER  
There is provided an even-level inverter, including: a voltage-dividing circuit dividing input DC power into an even number of voltage levels; a plurality of switching devices connected to...
US20120314465 CONTACTLESS ELECTRICITY-SUPPLYING DEVICE  
There is provided a contactless electricity-supplying device that can safely and efficiently supply power to a load. A contactless electricity-supplying device includes a plurality of...
US20140098579 SWITCHED-MODE POWER SUPPLY  
Consistent with example embodiments disclosed, there are switched-mode power supplies (SMPS) in which a signaling capacitor transmits information across a transformer of the power supply. Such...
US20140140105 HIGH EFFICIENCY AND FAST RESPONSE AC-DC VOLTAGE CONVERTERS  
The present invention discloses circuits and methods for high efficiency and fast response AC-DC voltage converters. In one embodiment, an AC-DC voltage converter can include: (i) a first stage...
US20130329463 HIGH EFFICIENCY AND FAST RESPONSE AC-DC VOLTAGE CONVERTERS  
The present invention discloses circuits and methods for high efficiency and fast response AC-DC voltage converters. In one embodiment, an AC-DC voltage converter can include: (i) a first stage...
US20110157935 Fully Resonant Power Supply  
A power supply produces one or more conditioned and scaled output voltages with low noise. The power supply has various components to produce a plurality of higher output voltages from a plurality...
US20140176086 CAPACITOR CHARGER SYSTEM, POWER MODULATOR AND RESONANT POWER CONVERTER  
A capacitor charger system has a resonant power converter to connect to a capacitor via a rectifier. The resonant power converter has a switch-based bridge network, an internal transformer, a...
US20120170323 CHARGING AC ADAPTOR  
A charging AC adaptor includes: a first diode bridge connected to an AC terminal; a chopper controller connected to the first diode bridge; an insulating air core transformer connected to the...