Switching parameter based discontinuous mode-critical conduction mode transition

Switching power source, method and control chip for controlling the same

Controlling transmission of pulses from a sensor

LED lighting systems and methods for constant current control in various operation modes

Purely resistive dimming circuit

Operation of an illuminant by means of a resonant converter

Method and system for improving LED lifetime and color quality in dimming apparatus

Controller

Dimmable universal voltage LED power supply with regenerating power source circuitry and non-isolated load

LED backlight for liquid crystal display (LCD) apparatus

Controller

Method and apparatus for hysteresis regulation of the output voltage of a DC-to-DC converter

Semiconductor device

LED (light-emitting diode) string derived controller power supply

High power-factor control circuit and method for switched mode power supply

Isolation Device And System

Driver method

Illumination device control systems and methods

Backlight source driving circuit and display apparatus

Isolation device and system

Multi-mode portable lighting device

Dental light device

Dimmable multichannel driver for solid state light sources

Load control device for a light-emitting diode light source

Optoelectronic semiconductor component

Light-emitting diode driving device, driving method and light-emitting diode lighting module comprising the same

Method and System for Intrinsic LED Heating for Measurement

Solid state lighting devices with adjustable color point

Systems and methods for intelligent control related to TRIAC dimmers

LED driver operating from unfiltered mains on a half-cycle by half-cycle basis

Lighting means insertion detection

Inductive power transfer system

Control circuit of light-emitting diode lighting apparatus

High efficiency driver circuit with fast response

LED lighting system with accurate current control

CURRENT ADJUSTING DEVICE AND ADJUSTMENT METHOD THEREOF

Driving apparatus and method for dimmable LED

Multi-bleeder mode control for improved LED driver performance

SEPIC driver circuit with low input current ripple

Current regulation apparatus

Apparatus, system and method for cascaded power conversion

Systems and methods for output current regulation in power conversion systems

Enhanced power factor correction

Driving device

LED lamp

LED lighting system

LED lighting system

LED DRIVER AND ILLUMINATION APPARATUS

Power converter between halogen transformer and LED

DRIVER FOR SOLID STATE LIGHT SOURCES

LED driver circuit having efficiency-improving function

Device for controlling a storage device

Systems and methods for regulating output currents of power conversion systems

Power supply circuit

Driver device and driving method for driving a load

Dimming edge detection for power converter

Systems and methods for regulating output currents of power conversion systems

LED lighting apparatus comprising an energy storage module and method for operating the LED lighting apparatus

Ceiling Fan Device with LED Lamp

Light emitting diode driving circuit, light emitting diode controlling circuit, and method of controlling light emitting diode

Sampling for dimmer edge detection in power converter

System and method for a switched-mode power supply

Medical headlamp assembly having interchangeable headlamp types with key resistors

CONTROL DEVICE AND METHOD FOR DATA TRANSMISSION VIA A LOAD LINE

High efficiency LED drivers with high power factor

Two-stage multichannel LED driver with CLL resonant circuit

Boost then floating buck mode converter for LED driver using common switch control signal

Auxiliary power supply for AC powered electronics

Deep dimming of an LED-based illumination device

LED LUMINAIRE HAVING HIGH POWER LED DRIVE CIRCUIT

LED power supply

Non-isolated LED driving circuit

Method and circuit for constant current buck converter

PHASE LOCK LOOP BASED DISPLAY DRIVER FOR DRIVING LIGHT EMITTING DEVICE AND RELATED DISPLAY APPARATUS GENERATING INTERNAL CLOCK BASED ON EXTERNAL CLOCK

Status indicating light unit and aircraft comprising the same

POWER SUPPLY DEVICE

LED (light-emitting diode) string derived controller power supply

LED current generation

CONVERTER SLAVED IN TERMS OF OUTPUT CURRENT

METHOD OF DRIVING LED CHIP

Mains synchronized PWM dimming

Controlled Power Dissipation in a Switch Path in a Lighting System

LED drive circuit with a programmable input for LED lighting

Semiconductor light source drive device and projection video display apparatus

Light source driving device and method for driving light source

LED driver with high dimming compatibility without the use of bleeders

Solid-state lighting control with dimmability and color temperature tunability

Vehicle lamp and vehicle lamp driving device

SWITCHING POWER SUPPLY

FLUORESCENT LAMP FIXTURE WITH LEDS

System and method for providing alternative communication path for management of lighting network elements

Digitally-controlled switch-mode start-up circuit with dimmer compatibility for LED-based lights

Light-emitting diode (LED) driver, LED lighting apparatus, and method of operating LED lighting apparatus

Lighting system

Controlled function light emitting diode lighting device and method

Light emitting element driving circuit, light emitting device, display device, and light emission controlling method

Timing circuits and driving circuits used in lighting systems

Digitally-controlled switch-mode start-up circuit for LED-based lights

Lighting device and lighting fixture

Switched-mode converter control for lighting applications

Light emitting driving apparatus and method of controlling the same

LED fluorescent lamp

Light source device, lighting device, and luminaire

Circuit to keep electronic transformers working while under-loaded

Dimmer output emulation with non-zero glue voltage

Buck-boost converter with active output voltage discharge

Power supply that maintains auxiliary bias within target range

Lighting device with integrated lens heat sink

Modular driver module for light fixtures with LED luminaires

LED fixture with integrated driver circuitry

Backlight module with MJT LED and backlight unit including the same

Power supply device and lighting equipment provided with power supply device

Lighting device and luminaire using same

LIGHT-EMITTING DIODE DRIVING CIRCUIT

Lighting apparatus and lighting fixture using same

Method and apparatus for wide range input for an analog to digital converter

Power supply device and lighting apparatus using the same

Low-flickerlight-emitting diode lighting device having multiple driving stages

High-efficiency, wide dynamic range dimming for solid-state lighting

Light emitting diode string driving method

PDM modulation of LED current

Light emitting device driving module

Inductor current detection circuit and LED driver

Dimming and voltage protection method and apparatus for solid-state lighting

LED lighting apparatus

Driver device and driving method for driving a load, in particular an LED unit

Light emitting diode lamp and driver

LED, testing method and article

Lightening apparatus having matrix-arranged light-emitting elements

Valley to valley switching in quasi-resonant mode for driver

Valley to valley switching in quasi-resonant mode for driver

Electric circuit of a switchable current source

Supply voltage management

Control loop with a variable time constant for power factor correction for a load circuit comprising light-emitting means

Lighting system and control circuit for the same

Lamp and illumination apparatus

Powerless bleeder

Dual mode analog and digital LED dimming via mains voltage

High voltage converter without auxiliary winding

Power supply device

Capacitance amplifying circuit applied to a controller of a power convertor and operation method thereof

Direct attach ceiling-mounted solid state downlights

Portable solar power management system

Semiconductor device and power supply device

Universal input and wide output function for light emitting diode (LED) driver

Vehicle lamp, driving device thereof, and control method thereof

ELECTRONIC POWER DEVICE FOR A LIGHT EMITTING DIODE

Dual switcher flyback structure for LED driver

Driving circuit for driving light-emitting circuit, and light-emitting device having the same

Apparatus for driving LEDs using high voltage

Light emitting device including first and second power sources, method of controlling the same, image pickup apparatus, and storage medium

Holding current circuit of LED driving apparatus and operating method thereof

Linear solid-state lighting with a wide range of input voltage and frequency free of fire and shock hazards

Circuits and methods for controlling current in a light emitting diode array

SURGE PROTECTION CIRCUIT

LED illumination dimming circuit and LED illumination dimming method

Multiple stage sequential current regulator

Low-cost low-power lighting system and lamp assembly

Improving the accuracy of an exponential current digital-to-analog converter (IDAC) using a binary-weighted MSB

System and method of compensating power factor for electrical loads

Emergency lighting device

Accent lighting system

Device for protecting a low voltage LED direct driver

Driver device and driving method for driving a load, in particular a light unit

Light source control device

Drive circuit for LED module

Single stage LED driver system, control circuit and associated control method

Method and apparatus for providing power to light strings

PWM CONTROLLER CAPABLE OF CONTROLLING OUTPUT CURRENT RIPPLE VIA A RESISTOR, AND LED DRIVER CIRCUIT USING SAME

Integrated LED module

Solid light source lighting device, illumination apparatus, and illumination system

Lighting device

Method and converter for supplying current to series connection of LEDs

Flyback boost circuit, LED backlight driving circuit and liquid crystal device

Inverter device, plasma generating device, sheet-member reforming device, and alternating-current voltage output method

Variable feedback signal based on conduction time

Light engine module, related power supply unit and lighting system

SERIES CONTROL CIRCUIT AND CONTROL METHOD THEREOF

Backlight driving circuit and liquid crystal display device

LED driver

Lighting system with an interface having a power supply unit and at least one light source module

Light-emitting diode lighting apparatus

Light emitting device and light source driving apparatus

Valley-fill power factor correction circuit with active conduction angle control

LED backlight driving circuit and liquid crystal device

LED power supply with small dimming ratio control and control method thereof

Multiple output synchronous power converter

Amplitude normalization circuit, power supply and electronic apparatus

LED lighting device

Power factor correction circuit, operating device for a light-emitting means and method for controlling a power factor correction circuit

METHOD OF DRIVING A LIGHT SOURCE, LIGHT SOURCE DRIVING APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE LIGHT SOURCE DRIVING APPARATUS

Electronic circuits for driving series connected light emitting diode strings

PWM dimming control method and control circuit and LED driver therefor

Bleeder circuit controller

Integrated light emitting diode lamp and data transmission circuit and synchronization circuit thereof

Driver circuit between fluorescent ballast and LED

LED driver device, and television receiver

Light emitting device control circuit with dimming function and control method thereof

Lighting system with power factor correction control data determined from a phase modulated signal

Light emitting device power supply circuit with dimming function and control circuit thereof

Switching power supply controller

Light driving circuit

Self-adjusting lighting driver for driving lighting sources and lighting unit including self-adjusting lighting driver

Lighting device

LED driver circuit for supplying TRIAC holding current by using controllable current source

LED driver with transformerless hysteretic boost

Control device with light adjustment function

SYSTEM AND METHOD OF VARIABLE RESISTANCE LED LIGHTING CIRCUIT

SWITCHING POWER CONVERTER INPUT VOLTAGE APPROXIMATE ZERO CROSSING DETERMINATION

Two-wire neutralless digital dimmer for leading-edge dimmable lamp driver and a method of operation thereof

Primary side current regulation on LLC converters for LED driving

Closed-loop boost drivers with responsive switching control

Active power factor correction control circuit, chip and LED driving circuit thereof

Light regulating apparatus with feed forward compensation and light regulating method thereof

Dimmable lighting systems and methods of dimming lighting systems

LED control circuit and a controlling method of the same

AC-powered LED light engines, integrated circuits and illuminating apparatuses having the same

MULTI-MODE CONTROLLER CIRCUIT

Method for mitigating flicker

Dynamic LED display screen with increased frequency of input clock signals

Flyback switching power supply circuit and backlight driving device using the same

Coordinated dimmer compatibility functions

LED boost converter and backlight LED driver device using the same

LED lighting system and method of controlling the same

High-stability dimmer

METHOD AND APPARATUS FOR ADJUSTING COLOR TEMPERATURE OF LUMINANCE OF LAMP

Portable lighting device

LED lighting device

Light emitting device including light emitting diode and driving method thereof

AC direct drive LED power supply capable of handling overvoltage

Feedforward circuit for fast analog dimming in LED drivers

Lamp using solid state source

Backlight driving circuit and liquid crystal display device

Load control device for high-efficiency loads

SCR dimming circuit and dimming control method

Systems and methods of applying bleed circuits in LED lamps

Pre-charging inductor in switching converter to achieve high PWM dimming ratio in LED drivers

Lighting system with an interface having a power supply unit and at least one light source module

Lighting device and illumination apparatus using same

Backlight unit

Lighting apparatus

Drive system of semiconductor light source, and semiconductor lighting device

Boost and linear LED control

Apparatus and method for driving semiconductor light-emitting device assembly

Cascode-type dimming switch using a bipolar junction transistor for driving a string of light emitting diodes

Lighting device and illumination apparatus including same

LED array member and integrated control module assembly with built-in switching converter

DC-DC converter circuit arrangement

LIGHT EMITTING DIODE DRIVING APPARATUS

Bleeder circuit emulator for a power converter

Optoelectronic component device

Systems and methods of driving multiple outputs

Method for driving LED

Power supply circuit for driving LED lamp and power supply method, and primary-side control circuit of flyback transformer

Load control device for high-efficiency loads

LED DRIVER OPERATING FROM UNFILTERED MAINS ON A HALF-CYCLE BY HALF-CYCLE BASIS

LED power supply device

System and method for monitoring street lighting luminaires

BACK LIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME

Light source driving apparatus for controlling the operating mode of a backlight in response to changes in the dropout voltage of the current control transistor

Diode load driving power supply apparatus

Load control device for a light-emitting diode light source

Backlight unit and a display device having the same

Power supply system of one or more lighting modules with light-emitting diodes, associated lighting system and associated power supply method

Lighting system and signal converting device therefor

Display apparatus and method of driving backlight thereof

LED backlight driving circuit and method for driving the LED backlight driving circuit

Compact converter plug for LED light strings

LED CONTROLLING DEVICE

Locomotive headlight assembly

LED actuating device and method

Transformer voltage detection in dimmable lighting systems

Minimum off time control systems and methods for switching power converters in discontinuous conduction mode

Lighting device and luminaire

MULTI-CONTROL LIGHT REGULATOR

Overvoltage protection circuit, LED backlight driving circuit and LCD

Multi-string led current control system and method

Method and device for regulating an illuminance using an adaptive control loop factor

Output circuit

LED driving device, illuminator, and liquid crystal display device

Light unit and display device including the same

Backlight driver chip incorporating a phase lock loop (PLL) with programmable offset/delay and seamless operation

Backlight unit and liquid crystal display using the same

Non-linear system control methods

Switching mode power supply apparatus

Offset compensation in driving circuits

Light emitting diode driver

Light emitting diode driving apparatus

Light emitting diode driving apparatus

LIGHT EMITTING DEVICE

Boost converter with a pulse frequency modulation mode for operating above an audible frequency

Flicker-free converter for driving light-emitting diodes

Power line communication for lighting systems

Commissioning lighting systems

LED driving device, lighting device and control circuit for LED driving device

Load control device for high-efficiency loads

Configurable LED driver/dimmer for solid state lighting applications

RF switch controller power supply apparatus of lamp

Driving a multi-color luminaire

LED lighting controller