Electronic ballast with filament cut-out
Electronic ballast with reversely wound filament winding
Electronic ballast with separate inverter for cathode heating
Electronic ballast with two-step boost converter and method
Electronic device for the starting and a.c. voltage operation of
Electronic fluorescent lamp starter
Electronic igniter for fluorescent lamps
Electronic magnetron power supply
Electronic starter for igniting a discharge lamp
Electronically controlled magnetic fluorescent lamp ballast
Energizing circuit for magnetron using dual transformer secondar
Energy saving circuit for discharge tubes
Energy saving device for a standard fluorescent lamp system
Energy saving device for rapid-start fluorescent lamp system
Energy saving fluorescent lighting system