Electric flash apparatus

Electric flash device

Electrical circuit for gaseous discharge lamp

Electrical circuit for operating a fluorescent lamp and for meas

Electrical device

Electrical display device with individual display members

Electrical overvoltage surge arrester with a long time constant

Electrical power supplies

Electrode construction for flexible electroluminescent lamp

Electrode-less discharge lamp

Electrode-less discharge lamp lighting apparatus,...

Electrode-less lamp equipment

Electrodeless arc tube with stabilized condensate location

Electrodeless coupled discharge lamp having reduced spurious ele

Electrodeless discharge lamp

Electrodeless discharge lamp

Electrodeless discharge lamp

Electrodeless discharge lamp and device for increasing the lamp'

Electrodeless discharge lamp and the manufacturing method thereo

Electrodeless discharge lamp containing push-pull class E amplif