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7619904 |
Pulse signal drive circuit
A pulse signal drive circuit includes an energy storage device. A source of energy supplies a substantially constant flow of energy to the energy storage device. A switch circuit draws repetitive...
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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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7609023 |
Control apparatus for electric vehicles
In electric vehicle control, system voltage stabilization control is executed to reduce the difference between a target value and detected value of a system voltage generated by a voltage boosting...
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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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7599197 |
Power supply apparatus
A rectifying circuit ( 18 ) converts inputted AC power to DC power. An inverter circuit ( 22 ) converts the DC power to high-frequency power in accordance with a switching control signal applied...
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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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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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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 (...
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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...
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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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7151678 |
Power system with redundant power supply apparatus
A power system ( 100 ) includes power conversion apparatus ( 110 ) coupled to load apparatus ( 120 ) having at least one load circuit ( 122,124 ). The power conversion apparatus includes: a first...
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7133298 |
High frequency voltage regulating transformer based converter
A switching regulator and method of fabricating a switching regulator is disclosed. In one embodiment a switching regulator comprises a transformer having a primary winding and a secondary winding,...
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7116014 |
Method and apparatus for stabilizing “DC-DC Transformers” in a distributed power system using remote sense
The output voltage of a dc—dc transformer having a ratio of approximately m/n, and which is powered from a main power supply having a remote sense input, can be stabilized by feeding the output...
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7116012 |
Stable power conversion circuits
A power conversion circuit includes a current section, a transformer, and a voltage section. The current section includes inductors configured to produce a boosted output voltage from a voltage...
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7071759 |
Method for determining RMS values for grid-linked converters
Techniques for determining root mean square (RMS) values of a signal for controlling operation of grid-linked converters, such as DC-to-AC inverters, via squaring the signal, sampling the squared...
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7061360 |
Transformer/rectifier arrangement
A rectifier transformer comprises two secondary windings, preferably with a single turn on each winding. The rectifier diodes form an integral part of each of the secondary windings. Thus, a...
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7050539 |
Power supply for an X-ray generator
A power supply for X-ray generators which includes at least one inverter ( 11, 12, 13 ), at least one transformer ( 111, 121, 131 ) and at least one voltage cascade ( 112, 122, 132 ) for generating...
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7021518 |
Micromagnetic device for power processing applications and method of manufacture therefor
The present invention provides a power micromagnetic integrated circuit having a ferromagnetic core, a method of manufacture therefor and a power processing circuit employing the same,...
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6956335 |
Circuit arrangement
A circuit arrangement for operating a lamp including a first circuit and a second circuit. The first circuit generates a second DC voltage from a first DC voltage and includes a transformer. The...
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6862193 |
Power supply apparatus
There is provided a power supply apparatus that can raise the power supply efficiency while an appliance in which the power supply apparatus is installed is in a standby state, with a simple...
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6844823 |
Method and apparatus for providing power to a visual messaging system for high-speed networks
The present invention a method and apparatus for providing a visual messaging device for use with a high-speed network and an electrical supply system for the visual messaging device. The visual...
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6703796 |
Power supply and inverter used therefor
This invention relates to a power supply that integrates a rectifier/filter's circuitry and a converter's circuitry with an inverter to reduce space occupied and increase power efficiency. The...
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6639483 |
Pulse width modulation integrated circuit chip
A pulse width modulation integrated circuit (PWM IC) chip available as an 8-pin DIP or a 14-pin SOP package is characterized by simplified circuit complexity, high package density, more voltage...
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6633493 |
Inherently short-circuit resistant power distribution system
A power distribution system is described for supplying power to electronic assemblies, in particular for use in the field of deep ocean oil production. The electrical power is supplied from a...
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6617820 |
Auxiliary power conversion by phase-controlled rectification
A method of generating low voltage auxiliary power forms for electric or hybrid vehicle use by tapping power from the traction motor primary winding with a secondary winding and rectifier.
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6580626 |
Switching power supply
A switching power supply for preventing the inflow of an electric current from an external when it stops operating. A transistor 32 is connected between a gate of a MOSFET 11 and a first...
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6563717 |
High output power and single pole voltage power supply with small ripple
The invention relates to a power supply for X-ray generators which includes at least one inverter, at least one transformer and at least one voltage cascade for generating a supply voltage for an...
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6545591 |
Apparatus for providing power to a visual messaging system for high-speed networks
The present invention provides a visual messaging device for use with a high-speed network and an electrical supply system for the visual messaging device. The visual messaging device includes a...
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6531843 |
Driving system of AC motor
The present invention provides a control algorithm which instantaneously detects magnetic pole positions in the inside of a motor including polarities of the motor. A controller 1 applies a...
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6515430 |
Power supply for lamps
The invention relates to a power supply for an illumination system used to expose photo-initiated adhesives. The illumination system includes an arc lamp to provide light. As the lamp ages, its...
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6501194 |
Energy recovery snubber circuit for bidirectional power converter and method of operation thereof
An energy recovery snubber circuit for a bidirectional power converter, a method of operation thereof and a power plant employing the bidirectional power converter. The bidirectional power...
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6456106 |
Method and circuit for detection of primary switches status in isolated DC/DC converters
A method and circuit for detecting primary switch ( 12 ) status in isolated DC/DC converters by observing the falling speed of the voltage level at the sensing point (node Z) is disclosed. It is...
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6418037 |
Computer system with hybrid power distribution
A power supply for a computer is disclosed. The power supply is capable of providing power in both a DC domain and a high frequency AC domain. A first power consuming component can be coupled to...
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6385056 |
Precision switching power amplifier and uninterruptible power system
This instantaneously interruptible power source (I 2 PS) produces a precise AC output voltage. The I 2 PS can be built using only 7 power components, including an output capacitor. Moreover,...
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