|
Match
|
Document |
Document Title |
|
|
7633783 |
Converter control device
A converter device which is configured by connecting three converter circuits in parallel is provided between a secondary battery serving as a first power supply and a fuel cell serving as a second...
|
|
|
7580805 |
Programmable calibration circuit for power supply current sensing and droop loss compensation
A circuit for regulating power is disclosed. The present invention provides circuits and methods for current sensing variations, static droop settings, mismatched phase outputs, and temperature...
|
|
|
7564227 |
Power supply for a load control
A power supply adapted to be coupled in series electrical connection between an AC voltage source and an electrical load for generating a DC voltage, the power supply comprising an energy storage...
|
|
|
7463984 |
Circuit arrangement including a self-diagnosis system for triggering and monitoring a load in a bridge circuit and associated operating method
A circuit arrangement for triggering and monitoring a load which is connected in the shunt arm of a bridge circuit, including a control circuit for triggering switch elements S 1 to S 4 of the...
|
|
|
7423413 |
Power supply for a load control device
A power supply for a load control device is disposed in series with an AC voltage source and a load and generates a substantially DC voltage for powering a controller of the load control device....
|
|
|
7397225 |
Apparatus for controlling the power of an AC voltage supplying an electrical consumer by phase control and method for reducing harmonics
An apparatus for controlling the power of an AC voltage supplying an electrical consumer ( 14 ) by phase control and for reducing harmonics caused by said phase control, particularly within a range...
|
|
|
7227341 |
Circuit for use with switched leg power supply
A circuit for use with a power supply coupled in a switched leg of, for example, a lighting circuit, is described. The circuit provides a low impedance near the zero crossing of the AC signal and a...
|
|
|
7154250 |
Buck-boost DC—DC switching power conversion
Apparatus operates at a power level within a range of power levels that includes a rated maximum power level of the apparatus. The apparatus includes circuit elements to deliver power at an output...
|
|
|
7019498 |
Power factor correction circuit
A method of power factor control for a power regulation system connected for supplying electric power to a reactive load, the power factor being characterized by a phase difference between a...
|
|
|
6930459 |
Method for reducing the influence of a DC current component in the load current of an asynchronous motor
A method with which the load current and thus the load moment of an asynchronous motor that is controlled via a phase-controlled two-phase thyristor power controller, can be easily influenced so as...
|
|
|
6813720 |
Method of and device for supplying electrical power to a load using a power modulation system including at least one controlled switch and overvoltage counting apparatus
The operating mode of a power modulation system is determined according to the nature of the load. The power modulation system can operate in either of two operating modes, namely a “reverse...
|
|
|
6771056 |
AC controller with reverse blocking IGBT
A method for operating an alternating-current (AC) controller system includes providing a first bi-directional switch coupled to a load and an AC power source. The first bi-directional switch is a...
|
|
|
6621254 |
AC voltage triac regulator
A method of providing a regulated AC output voltage at a predetermined level that makes use of an AC input voltage having a higher level, includes the steps of rectifying the input voltage to...
|
|
|
6590349 |
Bidirectional flip-flop
A bidirectional switch, including a first bidirectional switch between two power terminals of the switch, a low-voltage storage element between a first power terminal and a control terminal of the...
|
|
|
6548983 |
PWM-pulse control system
A power modulation control system using PWM pulses is provided. The system comprises an AC voltage generator, an electric load, and a control circuit incorporating at least one rectifier. The...
|
|
|
6509724 |
Housekeeping power supply for electronically controlled loads
A circuit for loading the rectified AC voltage bus in a housekeeping power supply for an electronically controlled load is provided for avoiding large increases in the rectified AC bus voltage upon...
|
|
|
6404171 |
Alternating-current electric power controlling apparatus and method for controlling supply of alternating-current electric power to electric load
An alternating-current electric power controlling apparatus including a switch and a controller. The switch is configured to be turned on or off to connect or disconnect an alternating-current...
|
|
|
6385732 |
Apparatus for and method of inhibiting and overriding an electrical control device
An apparatus for and method of inhibiting and overriding the normal operating mode of an input device connected to a communications network function within an electrical network made up of input...
|
|
|
6356060 |
Switching circuit and method for use in a switching circuit
The present invention relates to a bidirectional switching circuit including, in series, a bidirectional switching element controllable to be turned off and turned on, and a bidirectional...
|
|
|
6294901 |
Power dimmer
The present invention relates to a power dimmer of a load, powered by an a.c. voltage, of the type including a bidirectional switch associated in series with the load, the switch being normally...
|
|
|
6269012 |
Energy efficient power supply with light-load detection
An output voltage of a rectification smoothing circuit is compared with a reference voltage. When a reduction in the output has been detected, an A/D converting circuit converts a result of the...
|
|
|
6236192 |
AC voltage regulator
An AC voltage regulator, which not only has a fast response speed with respect to input voltage fluctuations but also is small in size and light in weight and is capable to boost an input voltage,...
|
|
|
6208126 |
Circuit having a bidirectional switch for supplying a load from an AC voltage supply
A circuit is provided for supplying a load from an AC voltage supply. The circuit includes a control circuit and a bidirectional switch coupled in series with the load. The bidirectional switch...
|
|
|
6194881 |
Switching power supply for lowered distribution system disturbance
A switching power supply system is disclosed for powering electrical equipment while minimizing disturbance to an AC power line source. The system includes first and second AC switches which are...
|
|
|
6191964 |
Circuit and method for controlling a synchronous rectifier converter
For use in a power system having a power train, a rectifier having an input and an output and a method of controlling the rectifier. The rectifier comprises: (1) switching circuitry coupled between...
|
|
|
6175220 |
Short-circuit protection for forward-phase-control AC power controller
A thyristor-based forward phase control (FPC) system for controlling the power delivered to a load from an AC power source employs a short-circuit test cycle to protect the thyristor from damage....
|
|
|
6101108 |
Regulated input current, regulated output voltage power converter
The power conversion system of this invention achieves precisely regulated input current and precisely regulated output voltage in a two step process whereby one power converter sub-system (141)...
|
|
|
6072304 |
Circuit and method for triggering a thyristor
An improved trigger circuitry for a high side thyristor application having a thyristor connected to an A/C line, a capacitor connected across the A/C line to A/C neutral through impedance, an...
|
|
|
6020726 |
AC voltage regulator
An AC voltage regulator provides a desired AC voltage to a load. The desired AC voltage is within a predetermined range above and below that of an AC voltage source. The AC voltage regulator has a...
|
|
|
5986242 |
Heater control device using phase angle control
The control circuit includes: a series circuit of a first triac and a reactor; and a second triac in parallel with this series circuit so as to perform control of activation of a fixing heater....
|
|
|
5889667 |
Quasi-resonant buck converter with soft switching
A rectifier circuit in a three-phase bridge connection includes four-segment main switches. Resonance capacitors are each connected in parallel with a respective one of the main switches. An...
|
|
|
5852357 |
System and method for controlling an alternating current (AC) signal
A system for controlling an Alternating Current (AC) signal to an AC powered device. The system uses a microcontroller to monitor the cycles of the AC signal supplied to the AC powered device. By...
|
|
|
5825164 |
Inductance controller with load regulator
A method for changing the inductance of a multiple-tap transformer in a circuit having a current regulator and the transformer, including the steps of comparing the current regulator's duty-cycle...
|
|
|
5747973 |
Current regulating switch circuit
A regulating switch circuit for conditioning operation of a first load upon operation of a second load wherein the first load and the second load consume electrical energy from a power source...
|
|
|
5729120 |
Dynamic voltage regulation stabilization for AC power supply systems
Instabilities in the output voltage provided from an AC power supply system such as an uninterruptible power supply connected to a power factor correcting load are suppressed by a dynamic voltage...
|
|
|
5670936 |
Power controller enclosure
A power controller (10) for supplying power to a power distribution network (N) in which power from a polyphase source (G) is routed to using equipment (E) connected to the network through the...
|
|
|
5670858 |
Single-phase induction motor safety controller
An electronic control apparatus to operate an alternating current induction motor protecting same from power line blackouts, brownouts and providing self-adjusting, linearized, non-stepped reduced...
|
|
|
5583423 |
Energy saving power control method
Apparatus and methods for AC power regulation primarily intended for inductive loads (e.g., fluorescent lights, motors, etc.) which provides substantial reduction in power consumption while also...
|
|
|
5576614 |
Circuit for supplying constant voltage to a lamp from an AC input
A circuit is provided for obtaining precise lamp voltage control and for compensating for varying or fluctuating input from an AC voltage source. The lamp is switched on by a switching device such...
|
|
|
5537026 |
Method and apparatus for power controller operation using master and slave firing units
A power controller (10) and a method for supplying power to a power distribution network (N) in which power from a polyphase source (G) is routed to using equipment (E) connected to the network...
|
|
|
5519311 |
Control of AC power to inductive loads
A control system is provided for controlling the average power from an alternating voltage source (AC) to a load having inductive properties. The system uses a synchronous switch shunted by a...
|
|
|
5309084 |
Electronic switch with on/off fading
The present invention provides a electronic switch suitable for fading on/off control of electrical equipment like lamps and motors. The main circuit comprises a rectifier bridge circuit and a...
|
|
|
5247242 |
Output module
An output module which is used in a factory automation control apparatus is disclosed. The output module is connectable to both of AC and DC power sources, which is constituted by a control element...
|
|
|
5216352 |
Solid state current controlled interruption system
A solid state circuit interruption arrangement monitors a current path to provide protection to both a load and a solid state switch. The arrangement includes an energy absorber for absorbing...
|
|
|
5032782 |
Series-connected power-line controller
A full-bridge transistor inverter is connected at its DC supply-side with an energy-storing capacitor. The inverter's output terminals are connected in series between a source of AC voltage and a...
|
|
|
4965508 |
Power supply circuit having controllable thyristor network and adjustable voltage regulator
A load is supplied by a transformer supplied via a voltage regulator and thyristor network. The thyristor network and regulator are simultaneously controlled to respond to changes in the load and...
|
|
|
4948987 |
Secondary electric power source produced by current flow through a primary a.c. power circuit
Voltage drop developed across a transformer primary winding coupled in series with a primary a.c. power circuit including an a.c. power source and an a.c. load is utilized to provide a secondary...
|
|
|
4933798 |
Self protecting and automatic resetting capacitor synchronous switch apparatus for control of AC power to inductive loads
A power controller is provided for controlling the average power provided from an AC voltage source power supply to an AC electrical load. Three shunt connected elements, comprising two electronic...
|
|
|
4889999 |
Master electrical load control system
A system controls power to multiple a.c. lighting loads from both a central location and from individual controls that are located near the loads. The system includes individual wallbox dimmers...
|
|
|
4870340 |
Method of and apparatus for reducing energy consumption
The proposed invention is an energy saving load control device primarily intended for inductive loads (i.e., fluorescent lighting, motors, etc.) operating from an alternating current (AC) source....
|