Drive system of semiconductor light source, and semiconductor lighting device

Lamp driving apparatus and illumination equipment using the same

Electronic ballast with real-time current crest factor improvement function

Power converting circuit and controller thereof

Electronic ballast for discharge lamp

Method of scanning backlight driving lamps for an LCD

Electronic ballast with controlled filament preheating using half-wave lamp current detection

Circuit configuration for starting and operating at least one discharge lamp

Discharge lamp lighting apparatus

CCFL controller with multi-function terminal

Fluorescent light control

Electronic ballast for discharge lamps having an EOL monitoring circuit

Fluorescent tube lamp drive circuit

Program start ballast

Backlight inverter and liquid crystal display using the same

Electronic ballast with lamp type determination

Electronic ballasts for lighting systems

High efficiency resonant ballast

Resonant ballast circuit

Current-mode resonant ballast

Electronic ballast with preheating and dimming control

Circuit arrangement for a starting unit of a discharge lamp

Multistrike gas discharge lamp ignition apparatus and method

Discharge-lamp lighting apparatus and projector

Discharge lamp lighting apparatus, luminaire and illumination system

Voltage fed inverter for fluorescent lamps

Methods and circuits for instant hot restart of high intensity discharge lamps

Method and device for driving a metal halide lamp

Starter circuit having regulated starter voltage

Device for turning on high-pressure discharge lamp and lighting apparatus equipped with the device

Discharge lamp ballast with detection of abnormal discharge outside the arc tube

Lighting circuit for high-pressure discharge lamp

Ballast for high-pressure discharge lamp and method of operating the same

Feedback circuit for push-pull inverters

Driving apparatus for CCFL

Method and device for ballast management in particular for a motor vehicle headlamp

Driving apparatus for CCFL

Discharge lamp lighting circuit

Power control circuit for controlling rated power supplied to a load

Gas discharge lamp dimming control method

Electronic ballast for a lamp

Integrated fluorescent lamp device

Pulse starting circuit

Current-mode resonant inverter circuit

Cold cathode flat fluorescent lamp and driving method therefor

DC-DC converter with reduced surge voltage and an electronic ballast including the converter for a discharge lamp

System for driving plural lamps

Stabilizer circuit for high-voltage discharge lamp

Ballast with filament heating control circuit

Lighting ballast having boost converter with on/off control and method of ballast operation

Multiple-CCFL parallel driving circuit and the associated current balancing control method for liquid crystal display

Circuit arrangement

Discharge lamp lighting circuit and method

Electronic ballast having a pump circuit for a discharge lamp having preheatable electrodes

Circuit arrangement for operating discharge lamps

Methods and apparatus for operating very high pressure short arc discharge lamps

Driver circuit for an HID lamp and method for operating an HID lamp

Electrode temperature differential operation of a discharge lamp

Resonant inverter including feed back circuit with source of variable bias current

Lighting apparatus for high intensity discharge lamp

Starter for minimizing damage to lamp electrodes of a discharge lamp at startup

Circuit for driving cold cathode tubes and external electrode fluorescent lamps

Power factor correction circuit for electronic ballast

Ballast circuit for operating a gas discharge lamp

Electronic ballast with adaptive lamp preheat and ignition

Projection type video display

Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship

Device for operation of a high pressure discharge lamp and a projector device

Lighting method of ultra-high pressure mercury lamp

Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship

Three-phase electronic ballast

Distributed fluorescent light control system

Electronic ballast for a lamp to be operated using iterative voltage pulses

Solar powered lamp having an auxiliary startup device

Method to detect uneven AC load or parallel load removal