217884 ⎘
Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
Sub-classes:Load Control Device for High-Efficiency Loads
#2Load Control Device for High-Efficiency Loads
#3Load control device for high-efficiency loads
#4Arc furnace power supply with resonant circuit
#5Electronic system sharing power with doorbell and power-supply method thereof
#6Load Control Device for High-Efficiency Loads
#7Integral half cycle (IHC) control
#8Thyristor or triac control circuit
#9Method for controlling a switch module based on thyristor switching elements
#10Load control device for high-efficiency loads
#11Ground leakage power supply for dimming applications
#12Hub device and power supply method thereof
#13Thyristor or triac control circuit
#14Load control device for high-efficiency loads
#15METHOD AND DEVICE FOR MANAGING THE OPERATION OF A LIGHTING DEVICE
#16Input responsive AC-AC converter for heat tracing
#17Transformer device and control method therefor
#18Load control device for high-efficiency loads
#19Static synchronous compensator device and related method of phase balancing a three-phase power system
#20Control of heating elements
#21Ground leakage power supply for dimming applications
#22Electronic device that measures a standby current of a circuit after burn-in
#23Power circuit, iron core for Scott connected transformer, Scott connected transformer, and superheated steam generator
#24Power circuit, iron core for scott connected transformer, scott connected transformer, and superheated steam generator
#25Power circuit, iron core for Scott connected transformer, Scott connected transformer, and superheated steam generator
#26Bypass switch for in-line power steal
#27Symmetry control circuit of a trailing edge phase control dimmer circuit
#28Driver for normally on III-nitride transistors to get normally-off functionality
#29Load control device for high-efficiency loads
#30Ground leakage power supply for dimming applications
#31Electric power supply device and image forming apparatus
#32Load control device for high-efficiency loads
#33Power delivery system and method
#34Bypass switch for in-line power steal
#35Power stealing circuitry for a control device
#36Power frequency converter and associated method
#37Power circuit, iron core for Scott connected transformer, Scott connected transformer, and superheated steam generator
#38Two-wire neutralless digital dimmer for leading-edge dimmable lamp driver and a method of operation thereof
#39Voltage adapter systems for use in an appliance
#40Two-wire flyback dimmer and a metod of operation thereof
#41Power conversion apparatus that provides a release path for inductive energy accumulated in an inductive load
#42Phase gating controller and method for phase gating control
#43Switching control apparatus and image forming apparatus
#44Electrical load driving apparatus
#45Load control device for high-efficiency loads
#46Phase control with adaptive parameters
#47Receiving control circuit for a wall control interface with phase modulation and detection for power management
#48AC power controller
#49Smart dimming solution for LED light bulb and other non-linear power AC loads
#50POWER SUPPLY CONTROL APPARATUS, IMAGE FORMING APPARATUS, AND POWER SUPPLY CONTROL METHOD
#51Integrated on-time extension for non-dissipative bleeding in a power supply
#52Dimming angle sensing circuit and driving method thereof
#53Timing device without neutral line
#54Apparatus for controlling bleed switch, power supply, and method for driving power supply
#55Power stealing circuitry for a control device
#56Series Power Module
#57System and method for regulating RMS voltage delivered to a load
#58Switch circuit
#59Power supply arrangement
#60Power supply arrangement, in particular for supplying power to a reactor for producing polysilicon
#61Integrated on-time extension for non-dissipative bleeding in a power supply
#62Power converter, control method thereof, and direct matrix converter
#63Phase control with adaptive parameters
#64AC POWER SWITCHING MODULE
#65FULL CYCLE AC POWER CONTROL
#66PHASE-CONTROLLED NON-ZERO-CROSS PHOTOTRIAC WITH ISOLATED FEEDBACK
#67Pulse width modulation control device
#68Igniter voltage compensation circuit
#69Power management interface
#70Wall control interface with phase modulation and detection for power management
#71Power stealing circuitry for a control device
#72Control and protection methodologies for a motor control module
#73High-frequency power supply circuit
#74Method and device for reducing the influence of a DC component in a load current of an asynchronous three-phase motor
#75Circuit for controlling an A.C. switch
#76Method for operating a two-phase rotary current controller
#77Power supply for a load control
#78Circuit arrangement for supplying variable loads from three phases
#79System of controlling and triggering a TRIAC and a method of controlling the triggering of a TRIAC
#80Power supply for a load control device
#81Control and protection methodologies for a motor control module
#82Power supply for a load control device
#83Method and device for controlling voltage
#84Dimmer circuit arrangement
#85Dimmer circuit with improved inductive load imbalance protection
#86Dimmer circuit with improved ripple control
#87Power supply for electronic switch
#88Voltage regulator and method of regulating voltage
#89Method of soft-starting a switching power supply including pulse width modulation circuit
#90System and method utilizing a solid state power controller (SSPC) for controlling an electrical load of a variable frequency three-phase power source
#91Power stealing in relay circuits
#92Power stealing in relay circuits