Lighting circuit

LED lighting device using ballast for fluorescent lamp

Bleeder circuit for use in a power supply

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

Power converter device for driving solid state lighting load

LED driver circuit and method

Adaptable driver circuit for driving a light circuit

Linear driver for reduced perceived light flicker

Driving light emitting circuit

Solid state lighting panels with variable voltage boost current sources

Light emitting device

LED fluorescent lamp

Light emitting diodes driven by high intensity discharge ballast

Lighting apparatus

White LED device having LED chips directly driven by alternating current

LED retrofit lamp

LED lighting circuit, LED illumination device, and LED illumination unit socket

Generator suitable for powering a dental curing light

High efficiency LED power supply

Semiconductor light emitting element drive device and lighting fixture with the same

Light-emitting diode driving circuit for lighting

Dimming circuit and method for LEDs

Post-mounted light emitting diode (LED) device-based lamp and power supply for same

Light-emitting diode circuit and light-emitting device having the same

Digitally controlled current regulator for high power solid state lighting

Light emitting diode circuits for general lighting

Apparatus, circuit and method for automatic phase-shifting pulse width modulated signal generation

Lighting device employing ac-driven light-emitting diodes

Multi-output self-balancing power circuit

Improvements relating rectifier circuits

Method and apparatus for increasing dimming range of solid state lighting fixtures

Light regulatable LED illumination lamp

Reduction of harmonic distortion for LED loads

LED drive circuit

Lamp for replacing a fluorescent tube

Power generating lamp and illumination appliance

Driving circuit and lamps

AC LED dimmer and dimming method thereby

Solid-state lighting apparatus and methods using current diversion controlled by lighting device bias states

Solid-state lighting apparatus and methods using energy storage

Driving modes for light circuits

Low current solution for illuminated switches using DC operated LEDs

LED driving circuit package

LED power supply

Jacketed LED assemblies and light strings containing same

Light-emitting diode module and method for operating the same

Lighting system including power conversion using a control signal based on illuminance information from a solar power generator

Current control circuit and associated method

AC-DC dual-use LED driving circuit

Light-emitting diode driving device for reducing light off period

High frequency multi-voltage and multi-brightness LED lighting devices and systems and methods of using same

Configurable LED driver/dimmer for solid state lighting applications

Apparatus or circuit for driving a DC powered lighting equipment

Extended persistence and reduced flicker light sources

Directly driven high efficiency LED circuit

LED lighting systems, LED controllers and LED control methods for a string of LEDS

Programmable current source for light emitting diode arrangements

Device for controlling an electrical load

Controlled power dissipation in a lighting system

Thermal management in a lighting system using multiple, controlled power dissipation circuits

Light-emitting device

Field equipment photoelectric sensing sensitivity adjustment

Low voltage LED dimmer with integrated universal switch mode power supply

Lighting device with optical pulsation suppression by polyphase-driven electric energy

Solid state lighting devices utilizing memristors

Power systems for driving light emitting diodes and associated methods of control

Current regulator drive circuit shunting current by voltage-dividing load

LED driving circuit

Fluorescent light fixture assembly with LED lighting element and converter modules

LED lighting for livestock development

Driver arrangement with division circuit

System and method providing LED emulation of incandescent bulb brightness and color response to varying power input and dimmer circuit therefor

Apparatus and methods of operation of passive LED lighting equipment

LED lighting methods and apparatus

Lamp power supply with 0 percent flicker and 0 flicker index

Control method for signal transmission through voltage boosting, and application circuit therefor

Lighting system

Isolated digital control device for LED driver using NFC technology

Adaptor for ornamental light emitting device and candolier including the same

LED driving circuit and tube lamp

Retrofit LED lamp

DC concentrated illumination system and method for measuring the state of the lamps thereof

Method and apparatus for color assurance

Lighting apparatus

Light intensity control of an LED lighting system

LED fault detection circuit and LED control circuit using the same

Elongated lamp tube, ballast and kit thereof

Lighting apparatus

Christmas tree with DC outlets for powering LED light strings

Adaptive backlight device, system and control method thereof

LED controller

Dimming controller and backlight module having the same

LED tube with safety device

Delay module for LED lighting fixtures

Apparatus method, and system for cost-effective lighting system retrofits including LED luminaires

Failure detection and alerting circuit for a differential mode surge protection device in an LED driver

Apparatus, system, and method for configuring an unpowered LED driver using an RS-232 interface

AC LED driver with capacitive switching

Phase-cut dimmable power supply with high power factor

Solid-state light source dimming system and techniques

Input voltage sense circuit for boost power factor correction in isolated power supplies

Phase-cut dimming circuit with wide input voltage

Intelligent lighting module for a lighting fixture

LED driving circuit for controlling leakage current and compatible with ballast

LED driving circuit for controlling leakage current

Lighting apparatus

Dual mode constant current LED driver

Circuit and method for LED current regulation and ripple control

Low cost LED light string for pre-lit christmas trees

LED automobile headlight with switchable dual-color temperature

System having a configurable pico-second pulsed LED driver circuit and photomultiplier tube biasing and gating circuits for real-time, time-resolved transient recording of fluorescence

LED direct AC drive circuit

LED driver circuit with three level step dimming interface

Linear lighting with distributed onboard power conversion

Luminaire having an adjustable color temperature of emitted light and related methods

Systems and methods for intelligent control related to triac dimmers by using modulation signals

AC LED driver circuit

Current source regulation

Integrated circuits for AC LED lamps and control methods thereof

Driving LEDs in backlight for flat panel display

Light-emitting diode headlight driver

Multi-purpose lightbulb

Self-adjusting power supply circuit of silicon controlled dimming in LED lighting

Multi-purpose lightbulb

Driver circuits with multiple rectifiers

System for distributing DC power to and controlling building devices

Textile with integrated illumination feature

Sensor lighting control system

LED driver configuration and dimming interface for dynamic adjustment of driver operating parameters

High-safety LED tube

Multi-stage LED dimming module

Highly efficient LED lighting fixture

Device and method for removing transient and drift from an AC main supplied to a DC-controlled LED load

Thermal protection for LED bleeder in fault condition

AC LED lighting systems and control methods without flickering

Controller and receiver for a power line communication system

Apparatus and method for dynamically providing charge

Light tube and power supply circuit

Integrated circuit with precision current source

Apparatus, method, and system for galvanically isolated control and monitoring of LED drivers

Circuit for controlling load switch

Linear solid-state lighting with an arc prevention switch mechanism free of fire and shock hazards

Multi-purpose lightbulb

Adaptive lighting driver

LED lighting device

Holiday magic systems

Portable solar-powered devices

Apparatus for driving light emitting diode (LED) and illumination system including the same

Power supply for a plurality of light emitting diodes

Turn on optimization

Portable solar-powered devices

Illumination device and method for determining a target lumens that can be safely produced by an illumination device at a present temperature

Illumination device and method for avoiding an over-power or over-current condition in a power converter

Driving LEDs in LCD backlight

Tubular light emitting diode lighting device having selectable light output

Constant current source LED driver circuit with self-clamped output

Rock landscape lighting system

Led thyristor switched constant current driver

Light emitting diode driving system and light emitting diode lamp

Light emitting diode driving system

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

Highly efficient LED lighting fixture

Dimmable and blink-suppressible light emitting diode driving apparatus

Non-isolated resonant DC-DC converter with boost-type voltage doubler output

High-temperature ultra-low ripple multi-stage LED driver and LED control circuits

Systems and methods for low-power lamp compatibility with an electronic transformer

Systems and methods for dimming multiple lighting devices by alternating transfer from a magnetic storage element

Constant current drive circuit for multi-channel LED lighting