lampe à lumière mixte

CONT: Self-ballasted mercury vapor lamps are designed to operate directly in incandescent sockets, without ballasts or new fixtures. These lamps use a special built-in filament that controls both starting and operating currents. Self-ballasted mercury vapor lamp provide significantly longer lamp life than the incandescent types.
CONT: Blended lamps consist of tungsten filament with Mercury discharge tube. The filament produces incandescent light. It can control the current by itself so this lamp doesn't need ballast.