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8976542 High frequency cathode heater supply for a microwave source  
A high frequency cathode heater supply for a microwave source includes a SMPS inverter and an isolation transformer having a primary winding arranged to be powered by the SMPS inverter, a monitor...
8971077 Power supply circuit, mobile terminals using the same, and control method of the same  
A power supply circuit includes: a first switch and a second switch that are connected in series between an input voltage terminal and a reference power supply; a controller that controls the...
8929108 Method and apparatus for controlling a grid-connected converter  
A method and an apparatus for controlling a grid-connected converter which includes a boost converter, a buck converter, and a current source inverter having an output CL filter. An input of the...
8923025 Apparatus and methods for feedback sensing in multi-cell power supplies  
Apparatus and methods in accordance with this invention provide a multi-cell power supply for receiving power from a source and delivering power at an output terminal to a load. The multi-cell...
8913408 Power supply device, organic light emitting display device having the same, and method of supplying power  
A power supply device includes an SMPS circuit including an electric transformer having first and second stages, the SMPS circuit generating a second stage output voltage using the electric...
8901416 Portable power and signal distribution system for a controllable system including multiple devices  
A power supply assembly which can drive a number of different devices at different voltages. A rack holds a number of breaker modules, and each breaker module can connect to one or many breakout...
8879287 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Apparatus and methods for feedback sensing in multi-cell power supplies
 
Apparatus and methods in accordance with this invention provide a multi-cell power supply for receiving power from a source and delivering power at an output terminal to a load. The multi-cell...
8867245 Switching power supply having high-power integrated circuit and monolithic integrated circuit therefor  
A switching power supply comprises one or more power supply stages that receive power from an input power source and that generate a regulated output voltage for powering a load. A controller...
8848409 Multilevel converter and a control method for operating a multilevel converter  
A converter includes an active stage for converting an AC input voltage at an AC input into an intermediate DC voltage, and a DC/DC converter for transforming the intermediate DC voltage into an...
8848327 Controller, controlling method, and solar cell  
Disclosed is a controller for controlling short-circuit across positive and negative terminals of a dye sensitized solar cell for converting a light energy into an electrical energy. The...
8805629 Maximum power point tracking device for a solar electric generation system and a tracking method for the same  
A maximum-power-point tracking device is provided for a solar electric-generation system that includes a solar battery and a DC/DC converter connected to the solar battery. The device includes a...
8791399 Induction heating cooker, induction heating cooking method, induction heating cooking program, resonance sound detection device, resonance sound detection method, and resonance sound detection program  
An object of the invention is to accurately detect a state of an object to be heated in a cooking vessel and effectively avoid cooking failure. An induction heating section (13) inductively heats...
8681515 Energy generation system and anti islanding protecting method thereof  
An energy generation system includes an inverter for converting a DC voltage into an AC voltage, a three-phase/two-phase transformer for transforming an output of the inverter into a...
8665620 Variable frequency timing circuit for a power supply control circuit  
A timing circuit of a controller generates a clock signal having a switching period for use by a pulse width modulation (PWM) circuit to control a switch of a power supply. The switching period of...
8653783 AC motor drive device  
A circuit switching element is provided that switches a step-up/step-down bidirectional chopper circuit, arranged between a DC bus and a power storage element, to a first chopper circuit or to a...
8570776 Method and device for determining a control scheme for an active power filter  
A method is provided for determining a control scheme for a voltage source converter (VSC) with a topology of three bridge legs between each of three phases of a grid and a neutral point. The...
8559201 Grid-connected inverter  
A grid-connected inverter includes first and second power conversion circuits, a contactor and a control circuit. The first conversion circuit converts a first DC voltage to a second DC voltage....
8531853 Variable frequency timing circuit for a power supply control circuit  
An example integrated circuit controller includes a pulse width modulation (PWM) circuit and a timing circuit. The PWM circuit controls a switch to regulate an output of a power supply in response...
8503205 AC/DC converter with a PFC and a DC/DC converter  
Disclosed is a power converter including a power factor corrector and a DC/DC converter and a power conversion method.
8503204 Power converter circuit  
A power converter includes a DC/AC converter with input terminals and output terminals. A DC/DC converter includes input terminals for receiving a DC input voltage and output terminals for...
8493757 AC/DC converter with a PFC and a DC/DC converter  
Disclosed is a power converter including a power factor corrector and a DC/DC converter and a power conversion method.
8471409 Power conversion circuit  
The present invention discloses a power conversion circuit. A control module controls a pulse width modulation regulator to regulate a duty cycle of a DC-DC converter according to the direct...
8369117 Power conversion system for eliminating low frequency ripple current and control method thereof  
There is provided an integrated control method for eliminating a low frequency ripple in a power conversion system for a fuel cell, more particularly, a control method of a power conversion system...
8310851 Method for operating an inverter having a step-up device connected upstream  
The invention relates to a method for operating an inverter comprising a step-up device which is upstream-connected by means of an intermediate circuit and is connectable to a direct-current...
8295067 Power converter using a rectifier with normally on transistors  
The invention relates to a power converter comprising, in particular, a rectifier comprising at least one switching leg provided with two transistors (T1-T6) connected in series. The transistors...
8284578 Power supply apparatus  
The DC power supply apparatus includes a switching operation control part that is provided between a current detection part to detect a current flowing through a primary coil of a transformer and...
8227935 Hybrid power supply device  
To provide a hybrid power supply device capable of properly controlling an operation of an engine generator and also preventing the device from increasing in size. The power supply device...
8223522 Bi-directional regulator for regulating power  
A regulated power supply apparatus is provided. The apparatus includes an input power converting circuit for generating a rectified voltage signal, an output power converting circuit comprising a...
8193660 HVAC/R system having power back-up system with a DC-DC converter  
An HVAC/R system is configured with power storage for power back-up to maintain substantially uninterrupted power in the case of a main power failure. The power back-up system has a DC power...
8130520 Power supply apparatus and semiconductor integrated circuit device  
The present invention is directed to largely improve the efficiency at the time of light load of a power supply apparatus using a power factor correction (PFC) controller. A PFC controller is...
7994798 Power converter current sensor testing method  
A method of testing power converter current sensors is disclosed. The method may include receiving a current sensor test request and receiving measured currents from current measurements from the...
7924584 Power supply switching circuit for a halogen lamp  
A power supply and methods are provided. The power supply includes a bi-forward converter and a feed forward circuit. The bi-forward converter is operable to convert an input voltage into an...
7787272 Inverter based storage in dynamic distribution systems including distributed energy resources  
A microsource is provided, which includes an inverter, an energy storage device, and a controller. The controller calculates a maximum frequency change for the inverter based on a first comparison...
7697310 Control apparatus for inhibiting synchronous-rectifier switching elements at low output current for a voltage transforming apparatus  
The control apparatus for controlling a voltage transforming apparatus having a transformer, power switching elements disposed in a primary side, and synchronous-rectifying switching elements...
7656691 Charge mode control of a serial resonance converter  
The present invention relates to an apparatus and a method for converting power from a power input to a DC output current or voltage, where a first feedback circuit a traditional feedback. The...
7645931 Apparatus to reduce the cost of renewable hydrogen fuel generation by electrolysis using combined solar and grid power  
One embodiment of the invention includes a PV array and an electrolyzer operatively connected together and each operatively connected to a utility power grid so that electricity produced by the PV...
7616464 Reverse current control system for a power converter  
A reverse current control system for first power converter having a synchronous rectifier and an output inductance includes a reverse current module. The reverse current module monitors a first...
7595620 Switching regulator  
A control signal generating circuit (1) comprises a comparator (10) for comparing an output voltage VO with a reference voltage outputted from a reference voltage source (11), a flipflop (12) set...
7522435 Power supply converter/s with controller/s responsive to voltage, current, and power  
Each of power supply units in a power supply system according to the present invention includes a power supply module, a voltage increase/decrease circuit for increasing the voltage across the...
7446512 Resonant switching power supply device  
For the purpose of providing a resonant switching power supply device having a wide output voltage variable range by changing its switching frequency, the resonance circuit thereof comprises a...
7432473 Electrofusion machine with improved functions  
A portable electrofusion machine includes: a power supply circuit having a triac configured to have a proper regulation for dropping a commercial voltage to a voltage adapted for a fitting; and a...
7391631 Switching power source device  
A switching power source device is provided which comprises a drive controller 40 connected between an error amplifier 26 and changeover circuit 37. A second comparator 52 of drive controller 40...
7365997 Synchronous switching control circuit for power converters  
The present invention provides a synchronous switching control circuit for variable switching frequency power converters. It comprises a first circuit to generate a first signal in response to an...
7358712 Power supply control circuit and control method thereof  
A power supply control circuit includes: a conducting part configured to be controllable in its a conducting amount for conducting a power supply current to a load circuit; a current change ratio...
7352599 Switching power source apparatus  
A power-factor improving circuit applicable to a switching power source apparatus includes a rectifier having a diode bridge, a step-up reactor, a switching element, an output diode, a smoothing...
7276863 LED array driving apparatus and backlight driving apparatus using the same  
The present invention relates to an LED array driving apparatus and a backlight driving apparatus using the same which enables regulation of analogue and PWM dimming for each channel and LED of a...
7193871 DC-DC converter circuit  
Provided is a DC-DC converter circuit which is stably operated without being affected by a size of an output capacitor (111) and a cost thereof. When a switching element is turned on so that a...
7180279 Method for driving pulse-width-controlled inductive loads, and a drive circuit for this purpose  
When a switch (20) that is in series with the inductive load (10) is turned on, the rise behavior of the current (I) is first of all detected until a nominal value (Iref) is reached, and a pulse...
7180761 Constant voltage control apparatus capable of reducing feedback lines  
Provided is a constant voltage control apparatus capable of reducing feedback lines. In the constant voltage control apparatus, a first amplifier amplifies an output voltage applied to a pair of...
7151394 Phase shifting and PWM driving circuits and methods  
The present invention provides an inverter controller comprising a drive circuit that generates a plurality of switch drive signals for inverter applications. In some exemplary embodiments, the...

Matches 1 - 50 out of 219 1 2 3 4 5 >