Constant voltage and constant current driver circuit

Transient power communication

DRIVE CIRCUIT DEVICE FOR FLICKER-FREE LED

LED POWER CIRCUIT AND LAMP USING THE SAME

LED retrofit lamp with shunt capacitors across rectifier diodes for use with a ballast

METHODS SYSTEMS AND DEVICES FOR MINIMIZING POWER LOSSES IN LIGHT EMITTING DIODE DRIVERS

Low-cost self-oscillating driver circuit

POWER GENERATION CONTROL DEVICE

DEVICE FOR DRIVING LIGHT EMITTING DIODE MODULE AND METHOD FOR DRIVING LIGHT EMITTING DIODE MODULE

MASTER-SLAVE SYSTEM ON THE SECONDARY SIDE OF A GALVANIC ISOLATION BARRIER (SELV BARRIER) OF AN OPERATING UNIT

Illumination apparatus including semiconductor light emitting diodes

Lighting device

Circuit arrangement and led lamp comprising the same

Driver Circuit Integrated LED Module

LED-based illumination device reflector having sense and communication capability

System and method for wirelessly controlling LED lighting

Radio transmission between modules in a potential-separated LED converter

LED luminescence apparatus and method of driving the same

Power converter between halogen transformer and LED

Dimming drive circuit of alternating current directly-driven LED module

LED lighting apparatus with colour mixing

LED lighting device with modelling device for modelling a voltage profile

LED luminescence apparatus

DRIVER FOR LED LIGHTING AND METHOD OF DRIVING LED LIGHTING

SYSTEM AND METHOD FOR POWERING AND CONTROLLING A SOLID STATE LIGHTING UNIT

Lighting fixture with application controller

SYSTEM AND METHOD FOR POWERING AND CONTROLLING A SOLID STATE LIGHTING UNIT

LED package with capacitive couplings

LIGHT ADJUSTABLE AC LED DEVICE

Status indicating light unit and aircraft comprising the same

Powerline communication control of light emitting diode (LED) lighting fixtures

Three-way solid-state light bulb

Synchronized light source for rolling shutter imagers

AC lighting system with a control unit for controlling power of an LED

LIGHTING CONTROL SYSTEM AND METHOD

AC-driven LED lighting apparatus with multi-cell LED

CIRCUIT FOR ADJUSTING COLOR TEMPERATURE AND LUMINOUS FLUX OF LIGHT EMITTING DIODES

Resonating power transfer for auxiliary vehicle lights

LED FLUORESCENT LAMP

Lighting system

Apparatus, method and system for providing AC line power to lighting devices

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

LED fluorescent lamp

Circuit to keep electronic transformers working while under-loaded

Lighting device suitable for multiple voltage sources

LED lamp

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

Light emitting device driving module

Light emitting diode system

UNIVERSAL LIGHT EMITTING DIODE ILLUMIATION DEVICE AND METHOD

AC-powered LED light engine

Control system for feedback controlled LED driving circuit

Method of providing power to solid state lighting

Holding current circuit of LED driving apparatus and operating method thereof

LED lighting device with replaceable driver-control module

Parallel-type LED lighting device

USING VARIABLE IMPEDANCE TO KEEP UNDER-LOADED ELECTRONIC TRANSFORMERS DELIVERING OUTPUT POWER

Control circuit for reducing of total harmonic distortion (THD) in the power supply to an electric load

Multi-stage LED lighting systems

Anti-Flickering LED Lighting System

Method and apparatus for high efficiency rectification for various loads

System and method of compensating power factor for electrical loads

Lighting system with lighting dimmer output mapping

Solid-state lighting dimming

Stack Light with Modular Power Converter

Driver circuit between electromagnetic ballast and led

Light engine module, related power supply unit and lighting system

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

Light-emitting diode lighting apparatus

Stability of an optical source in an optical network test instrument

ARRANGEMENT AND METHOD FOR CONTROLLING LIGHT-EMITTING DIODES IN ACCORDANCE WITH AN INPUT VOLTAGE LEVEL, BY MEANS OF A CAPACITOR AND SWITCH

LED DRIVING DEVICE

Systems and methods for retrofitting existing lighting systems

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

Switching power supply controller

Control device with light adjustment function

Lighting strip for an aircraft interior and aircraft interior equipment with a plurality of lighting strips

Dynamic LED display screen with increased frequency of input clock signals

LED light source and lamp comprising such a LED light source

ARRANGEMENT AND METHOD FOR CONTROLLING LIGHT-EMITTING DIODES IN ACCORDANCE WITH AN INPUT VOLTAGE LEVEL, BY MEANS OF BRANCH SWITCHES

Lighting device

Lamp using solid state source

Passive peaking circuit comprising a step-down impedance transformer

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

VOLTAGE-CONTROLLED DIMMING OF LED-BASED LIGHT MODULES COUPLED IN PARALLEL TO A POWER SUPPLY

High efficiency power controller for luminaire

Systems and methods for a current sharing driver for light emitting diodes

LED DRIVING DEVICE, LIGHTING DEVICE, AND CONTROL CIRCUIT FOR LED DRIVING DEVICE

CONVERSION CIRCUIT BETWEEN FLUORESCENT BALLAST AND LED

Light emitting diode driver

Apparatus and method for powering LED driver

Configurable LED driver/dimmer for solid state lighting applications

Apparatus and method for controlling LED light strings

Actuation of semiconductor light-emitting elements on the basis of the bypass state of adjacent semiconductor light-emitting elements

Lighting device

Current demand control of lighting modules

Power supply device having boosting circuit and boosting control applicable to electronic devices

Load driver and luminaire including the load driver

Dimmable AC driven LED illuminating apparatus

Apparatus and methods for external programming of processor of LED driver

Two-stage LED driver with selectable dual output current

Lighting device, illumination device, illumination apparatus and illumination system

LED luminaire driving circuit and method

LED driver

LED-BASED LIGHTING APPARATUS WITH LOW FLICKER

Lighted sockets

Current shaping for dimmable LED

Method of controlling multiple lamps

Light-emitting diode driving apparatus and semiconductor device

LED driver circuit and bleeder circuit

Lighting source and lighting apparatus

Lighting source and lighting apparatus

LED flashing lamp

Reduction of harmonic distortion for LED loads

Driving device, light-emitting device, projection device and control method

Control Apparatus, Control System, and Control Method

Light adjusting device with switching element

Light generating device

Protection circuit and method against interference in lighting systems

Method for controlling a power factor correction circuit, power factor correction circuit and operating device for an illuminant

Three-phase power supply and system of LEDs with three-phase power supply

LED fluorescent lamp

LIGHT EMITTING DIODE DRIVING CIRCUIT AND LIGHT EMITTING DIODE ILLUMINATION APPARATUS INCLUDING THE SAME

LAMP UNIT POWER SUPPLY SYSTEM

INDUCTIVELY COUPLED LED LIGHTING SYSTEM

Driver for arrays of lighting elements

LED lighting device

LED Lighting System Based on a Multiple-output Constant Current LED Driver

SINGLE WIRE LIGHTING DRIVER CONTROL

LED backlight driving circuit and liquid crystal device

Two-level LED security light with motion sensor

LED light source

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

LED lighting apparatus having improved flicker performance

Light-emitting diode lighting device having multiple driving stages

Light-emitting diode light tube driving circuit

Light emitting diode (LED) lamp replacement driver for linear fluorescent lamps

LED Control Method and Apparatus

LED fluorescent lamp driving device driven by being connected to lamp stabilizer and LED fluorescent lamp having the driving device installed therein

DC POWERED SYSTEM COMBINING DC/AC INVERTER FOR AC POWER AND CONSTANT CURRENT SUPPLIES FOR LED DRIVE FOR ILLUMINATION AND SIGNALING, AND FOR BATTERY CHARGING

Light strings including jacketed LED assemblies

TRIAC dimmable LED driver circuit

Direct drive LED driver and offline charge pump and method therefor

Driving device for illuminating device, illuminating device and luminaire, driving device having distributed inductance

Illumination apparatus including semiconductor light emitting diodes

Two-level LED security light with motion sensor

Illumination device power control module

LED DRIVER

BACKLIGHT DRIVING MODULE AND LIQUID CRYSTAL DISPLAY USING THE SAME

Active capacitor circuit

Solid state lighting devices and methods of manufacturing the same

Slew rate controlled transistor driver

Leading-edge phase-cut dimmer detector

High efficiency led driver and driving method thereof

LED converter including a resonant convertor

Color temperature controlled and low THD LED lighting devices and systems and methods of driving the same

Current shaping for dimmable LED

Serially-connected light emitting diodes, methods of forming same, and luminaires containing same

Smart FET circuit

White LED light emitting device driven directly by constant alternating current

LED backlight driving circuit, LCD device, and method for driving the LED backlight driving circuit

LED device with shared voltage-limiting unit and individual equalizing resistance

LED backlight driving circuit, LCD device, and method for driving the LED backlight driving circuit

Driver system for driving at least one LED

Dimmer detector for bleeder circuit activation

Light source module, light source module driving circuit and driving method

MR16 GU5.3 DIMMABLE LAMP

LED light unit and method of operating an LED light

LED lighting unit with color and dimming control

Feedback control circuit and LED driving circuit

Control circuit of light emitting element

Illumination device and LED dimming circuit thereof

Constant current source circuit and a sampling circuit

Luminaire

Circuit for reducing flicker in a lighting load

Wireless lighting network with external remote control

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

Solid-state lighting apparatus and methods using energy storage

Device and method for controlled LED lighting

Constant power supply for LED emergency lighting using smart output resetting circuit for no load conditions

MULTI-CHANNEL DRIVER AND ILLUMINATING DEVICE

Magnetic coil / transformer modulation

Reactive power balancing current limited power supply for driving floating DC loads

Replaceable lighting fixture components

Controlled electronic system power dissipation via an auxiliary-power dissipation circuit

COIL COMPONENT AND ELECTRONIC DEVICE HAVING THE SAME

Light-emitting device package and light-emitting apparatus

Driver for connecting LED to electronic ballast

Lighting apparatus including a current bleeder module for sinking current during dimming of the lighting apparatus and methods of operating the same

Electrical load driving apparatus

THREE-WAY LED BULB DRIVER

LED FACILITIES LIGHTING SYSTEM

Driver for LED backlight and LED backlight module and liquid crystal display

Liquid crystal display apparatus and LED backlight module thereof

PFC LED driver having a flicker control mechanism

Capacitive full-wave circuit for LED light strings

Solar panel device

High efficiency LED driver and driving method thereof

Automobile LED driving device

SCR dimming circuit and method

LED lighting device using ballast

LED fluorescent lamp

Light-emitting diode lamp compatible with an electronic ballast generating preheating current

Direction indicating apparatus

Direction indicating apparatus

Solid-state lighting apparatus for use with fluorescent ballasts

Light-emitting diode tube

Regulation of wavelength shift and perceived color of solid state lighting with intensity variation

AC to DC LED illumination devices, systems and methods

Drive circuit, illumination light source, and lighting apparatus

Driving circuitry for LED lighting with reduced total harmonic distortion

AC LED LAMP

LED lighting apparatus for use with AC-output lighting ballasts

Solar or wind powered assembly device

Multi-output current-balancing circuit

Solid-state lighting apparatus with filament imitation for use with florescent ballasts

LED lighting apparatus for use with AC-output lighting ballasts

LED lighting tube

Backlight dimmer circuit and backlight dimming method

DIMMING CIRCUIT AND LIGHTING DEVICE USING THE SAME

LED DRIVING CIRCUIT HAVING Vcc STABILIZATION CIRCUIT

Overvoltage protection method for backlight drive circuit of 2D/3D mode and backlight drive circuit using same

System and method for implementing mains-signal-based dimming of solid state lighting module

LED lamp

Multiple-level power control system

Power supply apparatus

LED LIGHT TUBE COMPATIBLE WITH LIGHT FIXTURE HAVING ELECTRONIC BALLAST OR MAGNETIC BALLAST

LIGHTING MODULE AND LIGHTING APPARATUS USING LIGHTING MODULE

Dual-mode, AC/DC power converter with power factor correction

Limited flicker light emitting diode string

LED lighting apparatus, current regulator for the LED lighting apparatus, and current regulation method of the LED lighting apparatus

Circuit adapted to supply a voltage to an electronic device and uses thereof

Power converter control circuit

Synchronized light source for rolling shutter imagers

Centralized LED based highway lighting supply and controls and related methods

Apparatus and method for providing AC line power to lighting devices

Universal LED ballast compatible controller device

Driver device for driving an LED unit

Dimmable LED driver and method for controlling the same

Apparatus for controlling light emitting devices

Circuit for driving LEDs

Apparatus, method and system for providing AC line power to lighting devices

Light emitting module

LED lamp, illumination device including the LED lamp and current control method of the LED lamp

Diode lighting arrangement

LED fluorescent lamp

LED driving apparatus having holding current circuit and operating method thereof

Light-emitting device circuit and method of operating thereof

Spectral shift control for dimmable AC LED lighting

Apparatus for controlling the operation of an LED, and method for controlling drive current thereof

LED device with voltage-limiting unit and voltage-equalizing resistance

Signalling apparatus and sensor apparatus

Driving light emitting diode (LED) lamps using power received from ballast stabilizers

LED flourescent lamp

Method and circuit for LED load managment

LED constant-current drive circuit

Lighting component with independent DC-DC converters

Power conversion with controlled capacitance charging including attach state control

LED current control system for LED drive system with multiple dimming inputs

Leakage current detection circuit, semiconductor apparatus, LED illumination apparatus, and vehicle

LED controller circuit

LED driver having compensation capacitor set

Method and apparatus for LED lighting

LED driving device and LED driving method using same

Light source driving apparatus, light source device including the same and light source driving method of the light source driving apparatus

SINGLE STAGE FORWARD-FLYBACK CONVERTER AND POWER SUPPLY APPARATUS

LIGHT EMITTING DEVICE

Single inductor control of multi-color LED systems

APPARATUS FOR CONTROLLING LED STRING

Interface circuit for a light source

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

LED light source

LED drive system for controlling an off-chip power supply

Line voltage control circuit for a multi-string LED drive system

Load driving apparatus related to light-emitting diode lamp and method thereof

Single-stage power supply with power factor correction and constant current output

Systems and methods for determining a type of transformer to which a load is coupled

Systems and methods for low-power lamp compatibility with a leading-edge dimmer and a magnetic transformer

Systems and methods for low-power lamp compatibility with a trailing-edge dimmer and an electronic transformer

LED driver, lighting device and LED based lighting application

Leading-edge phase-cut bleeder control

Modular lighting control

LED lamp

LED lighting device

Modular lighting control

Lighting system with lighting dimmer output mapping

System and method for emulating a gas discharge lamp

Method and device for lighting a space using an LED string

LED lamp with variable input power supply

LED lamp

FLICKER-FREE LINEAR LED DRIVER CIRCUIT WITH HIGH POWER FACTOR

LIGHT EMITTING APPARATUS

Portable electric lamp having a current limitation device

Power supply and method for electric lighting device

Vehicle LED lighting device

Circuit for the operation of at least one LED

Current source and method for providing a driving current

Solid State Semiconductor LED Replacement for Fluorescent Lamps

AC driven solid state lighting apparatus with LED string including switched segments