Equipment and methods for emergency lighting that provides...

Equipment and methods for emergency lighting that provides...

Excitation circuit for gas discharge lamp

Exposure amount control device for a copying machine

Exposure device for reprographics and method

External electrode fluorescent lamp, back light unit using...

Extra efficient electronic ballast for fluorescent lamps

Fast warmup ballast for HID lamps

Fault management method for electronic ballast

Feedback control system of an electronic ballast which detects a

Feeding device for discharge lamp

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

Fixed lamp frequency synchronization with the resonant tank...

Fixed lamp frequency synchronization with the resonant tank...

Fixed operating frequency inverter for cold cathode...