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8166318 |
Power circuit
A power circuit includes a memory power circuit and a central processing unit (CPU) power circuit. The memory power circuit includes a first operational amplifier and a first switch. The CPU power...
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8164217 |
System and method for management of a DC and AC bus microgrid
Systems and methods are described herein for managing the operations of a microgrid module. The microgrid module includes transformers and/or power converters necessary for modifying the input AC...
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8154887 |
Dual isolated input single power supply topology
An electric power supply system includes a transformer having two primary windings for receiving input power and a secondary winding for delivering output power, in which the primary windings are...
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8077481 |
Primary sampling current controlled synchronous rectifying drive circuit
A primary winding current controlled synchronous rectifying drive circuit including a current sampling circuit that detects a current signal in a primary winding of a transformer and forwards it to...
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8072305 |
DC/DC converter
Primary and secondary coils are provided in the first through section and a coil group is also provided in the second through section. Hence, the surface area over which the coil group extends...
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8071232 |
Hybrid fuel cell system and voltage conversion control method thereof
To provide a hybrid fuel cell system for improving converter efficiency. In a hybrid fuel cell system (1) in which a fuel cell (22) and an electricity storage device (21) are connected via a...
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8022802 |
Sensor for high voltage environment
Sensor for measuring electrical parameters in a high voltage environment comprising a high voltage side (4) for connection to high voltage conductors, a low voltage side (6) for connection to low...
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8018211 |
Output voltage detecting circuit and switching power supply having such output voltage detecting circuit
An output voltage detecting circuit includes a conducting structure, a voltage regulator, a first resistor and a second resistor. The conducting structure includes a power output return terminal, a...
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8013583 |
Dynamic switch power converter
The present invention provides a dynamic switch power conversion circuit to improve the efficiency of a solar cell array, and specifically to operate the solar cell array under various sunlight...
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8010823 |
Power supply with integrated uninterruptible power control
An architecture for a power supply with an integrated UPS control system to which generic batteries may be connected. Such an architecture greatly reduces the overall cost, complexity, size and...
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7977819 |
Power converter and controller using such power converter for electric rolling stock
Provided is a power converter having an inverter (13) wherein capacitors (12) are connected in parallel on a direct current side, and a power supply circuit configured to supply the inverter with a...
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7936349 |
Power supply apparatus and flat-screen television set
A safety circuit 16 for monitoring the waveform of a start signal outputted from a microcomputer 40a is provided in a power supply circuit. If a start signal inputted to the safety circuit 16 is...
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7899632 |
Method and apparatus for anti-islanding of distributed power generation systems
A method and apparatus for anti-islanding of distributed power generation systems having an inverter comprising a phase locked loop (PLL), a phase shift generator for injecting a phase shift into...
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7894211 |
Micro wind turbine topology for small scale power generation
A wind energy converter has a generator adapted to be coupled directly to a wind turbine without need for a mechanical gear unit. A rectifier is coupled to the generator and a converter is coupled...
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7859427 |
Bidirectional, DC-isolated transmission channel
Arrangement and method for electrically isolated transmission of direct-current and alternating-current signals. The signals can be transmitted in both directions via the same and only DC-isolated...
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7844304 |
Method of filtering low frequency components from power lines
A power supply for a communications device, including a controllable regulator that varies power drawn from a power input according to communications requirements of the communications device. The...
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7831401 |
Power outage detection in a switched mode power supply
Generally, a DC/DC converter and its associated devices and processes are presented herein. The DC/DC converter may be a switched mode converter that includes a plurality of switching devices that...
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7808211 |
System and method for charging batteries
A high frequency battery charger includes a converter, drive logic, and control logic. The converter transforms a DC voltage into a high frequency AC voltage. The drive logic controls a conversion...
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7804697 |
History-independent noise-immune modulated transformer-coupled gate control signaling method and apparatus
A history-independent and noise-immune modulated transformer-coupled gate control signaling method and apparatus provides robust design characteristics in switching power circuits having a...
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7804193 |
Energy recycle system for use with AC current power supply
An energy recycle system for use with an AC current power supply, for example, an electronic ballast, is presented. The energy recycle system includes an energy recycle load connected to an output...
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7796406 |
Apparatus and method for high efficiency isolated power converter
A DC-DC converter apparatus comprising half or full bridge, two-stage resonant converter, which may include series resonant (inductor, capacitor) devices. An isolated transformer having primary and...
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7777433 |
Power converter
The power converter for solving the above-described problem has a module section and a drive section for operating the module section. The drive section has a drive circuit. The drive circuit is...
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7760528 |
Method and apparatus for providing high speed, low EMI switching circuits
Methods and apparatus are provided for generating low EMI display driver power supply. The methods and apparatus include switching circuits that utilize two groups of parallel circuit traces, each...
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7746668 |
Galvanically isolated direct current transducer
The invention relates to a switching device for galvanically isolated 1:1 transmission of a direct current signal, with a transformer comprising a primary coil and a secondary coil, wherein the...
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7706152 |
DC-DC converter for low voltage power source
A power conversion unit and method for converting DC power. The power conversion unit includes a self-oscillating device configured to convert a DC voltage into a self-oscillating alternating...
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7675757 |
DC-DC converter
Disclosed is a DC-DC converter including: a first switching element ON/OFF controlling a current fed from a primary side to a secondary side; a second switching element provided in parallel to the...
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7656687 |
Modulated transformer-coupled gate control signaling method and apparatus
A modulated transformer-coupled gate control signaling method and apparatus provides reduction of circuit complexity and robust design characteristics in switching power circuits having a...
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7616454 |
Control circuit having programmable waveform for limiting output power of power converter
A control circuit having a programmable waveform for the output power limit comprises an oscillation circuit to generate an oscillation signal. The oscillation signal is used for producing a...
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7602620 |
Controller for power converter
A controller for providing out of phase drive signals to a power converter having at least a first power unit and second power unit. The controller may comprise input circuitry adapted to receive a...
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7599199 |
Power converter switch control
A power converter includes a transformer having a primary winding and a secondary winding, and a plurality of switches coupled to the primary and secondary winding, the plurality of switches...
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7593241 |
Hybrid power supply system
A hybrid power supply system including piezoelectric and ferrite transformers for driving a discharge lamp is provided. Specifically, the hybrid power supply system includes a rectifier/filter, a...
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7565459 |
Combination I/O modules in a modular automation controller
The invention describes combination I/O modules for automation. Various combinations of inputs and output with different electrical interfaces are offered providing greater flexibility in...
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7554822 |
Power converter for led large area light source lamp
Power converter for receiving an input current at an input voltage and for providing an output current at an output voltage. The power converter comprises a transformer (133) having a primary (136)...
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7554827 |
Electromagnetic coupling galvanic isolated solid state relay with output feedback
A solid state relay is provided herein, which utilizes an electromagnetic coupling device for galvanic isolation and providing feedback from the output side to the system side. The solid state...
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7512422 |
RF generator with commutation inductor
A radio frequency (RF) generator comprises a first half bridge including first and second power transistors; a second half bridge including first and second power transistors; an RF output node...
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7505291 |
AC/DC converter capable of actively restraining an inrush current
An AC/DC converter includes a rectifier circuit, at least one restraining unit, and a power interruption detection circuit. The rectifier circuit is used for converting an AC (alternating current)...
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7492611 |
Intelligent power-supplying device
An intelligent power-supplying device includes an alternating current (AC) input port, a direct current (DC) input port, a displayer, a reset key and a DC output port. The AC input port receives an...
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7463500 |
Monopolar DC to bipolar DC to AC converter
An electrical DC-to-AC power conversion apparatus is disclosed that is primarily intended for use with solar photovoltaic sources in electric utility grid-interactive applications. The invention...
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7453895 |
Outlet with analog signal adapter, a method for use thereof and a network using said outlet
An outlet (70, 75, 76, 78, 79) for a Local Area Network (LAN), containing an integrated adapter (21, 25) that converts digital data to and from analog video signal. Such an outlet allows using...
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7391626 |
Chop wave control circuit
A chop-wave control circuit includes a feedback unit, a ramp generation unit, a latchup unit and a voltage transformation unit that is used on a forward transformation circuit which includes at...
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7333142 |
Power supply apparatus and actuator control apparatus
In accordance with the switching operation of a switching section, current is made to flow from a battery to an inductor repeatedly. A voltage generated at the inductor is smoothed by a condenser...
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7327178 |
Timing control circuit for lossless switching converter
A timing control circuit (70) generates staggered signals from a pulse width modulated signal (68) providing lossless switching in a DC to DC power converter (10). The DC to DC power converter (10)...
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7315460 |
Switching power supply device
A series circuit in which a first switching element and a second switching element are connected in series at both ends of an output of an input rectifier circuit for rectifying an alternating...
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7304866 |
System and method for power converter switch control
A power converter includes a transformer having a primary winding and a secondary winding, and a plurality of switches coupled to the primary and secondary winding, the plurality of switches...
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7259603 |
Switch mode power converter
A switch mode power converter is provided which includes a switching cell with a supply input, an output and a control input. A summing comparator has first and second differential input pairs and...
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7245091 |
Inverter capable of switching working frequency
An inverter capable of switching working frequency for activating a lamp. The inverter comprises a voltage converter, a feedback circuit, a control unit and a frequency switcher. The voltage...
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7218531 |
Switching regulator with reduced conducted emissions
A fixed-frequency switching regulator having a noise injection circuit. Noise is injected into the feedback loop of the switching regulator to modify the switching waveform to reduce individual...
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7208920 |
Buck/boost power converter
A buck/boost converter having an input and an output, a switching cell with a switch between the input and the output, and a selector selectively configuring the switching cell into at least two...
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7208883 |
Current detection circuit, and power supply apparatus, power supply system and electronic apparatus using the current detection circuit
In the current detection circuit that detects the output currents of a switching power supply circuit, an improved current detection circuit makes it possible to detect the output current...
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7183823 |
Method of generating a pulsed output signal from a periodic ramp signal and a reference voltage, and a switch mode power converter
In the proposed method of generating a pulsed output signal from a periodic ramp signal and a reference voltage, the linear range of duty cycles of the pulsed output signal is significantly...
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