Starting Time-Lag Estimation of Electronic Compact Fluorescent Lamps

Abstract

Measurements of the statistical starting time-lag T_s(s) of non-preheated electronic compact fluorescent lamps show that T_s increases with longer off-time before starting and also with a darker environment on starting. The initial electrons per second Q(1/s), which is inversely proportional to T_s, changes from 1.2 to 72 in the dark environment on starting. Initial electrons are obtained mainly from the oxide emitter of the electrodes, even if they are not pre-heated. A brief start requires a Q greater than 260. This is achieved by heating an electrode to only about 100°C.