Four lamp modular lighting control

Frequency modulation ballast circuit

Frequency shift inverter for variable power control

Frequency synchronizing method for discharge tube lighting...

Frequency-modulated dimming control system of discharge lamp

Front-stage voltage-adjustment inverter

Full digital dimming ballast for a fluorescent lamp

Full wave sense amplifier and discharge lamp inverter...

Gain controlled control signal based on sensed lamp current

Gas discharge lamp ballast circuit with compact starting circuit

Gas discharge lamp ballasting means

Gas discharge lamp control

Gas discharge lamp controller

Gas discharge lamp having a controlled power source and a...

Gas discharge lamp inverter with a wide input voltage range

Gas discharge lamp lighting device

Gas discharge lamps and systems

Gas discharge tube changeable color display and digital...

Gas discharge tube changeable color display and digital...

Gas-discharge lamp having brightness control