Electronic power supply device for light-emitting diode

Electronic starter for fluorescent lamps

Electronic system for generating and controlling light...

Electronically controlled, power saving, power supply system...

Energizing arrangement for a discharge lamp

Energy conserving automatic light output system

Energy saving flourescent lamp controller

Energy saving lamp controller

Equipment and methods for emergency lighting that provides...

Excitation circuit for gas discharge lamp

Exposure amount control device for a copying machine

Extra efficient electronic ballast for fluorescent lamps

Fast warmup ballast for HID lamps

Feedback control system of an electronic ballast which detects a

Field emission lamp structures

Filament heating apparatus

Filament lamp light quantity control method and filament...

Filament lamp light source unit and filament lamp light...

Fitting for compact electric discharge lamps

Fixed frequency, variable duty cycle, square wave dimmer for hig