Saving power by discharge lamps with high efficient magnetic ballast

A new magnetic ballast is designed and developed for fluorescent lamps to save electric power. New core material of magnetic ballast "G-9" is used and the shape of core is modified to reduce energy loss. The diameter-of the coil is upgraded to 0.5 mm, and a new power-saving circuit is designed for the semiconductor ignition starter. The experimental results of the ballast shows reduction of the electric loss in the magnetic ballast about 1.7 Watt (0.5%). The luminous efficiency is increased 6.2 lm/Watt (7.6%) and the ballast efficiency factor (BEF) of 1.09 (7.6%). The prototype was tested through governmental testing procedure. A high efficient energy-using equipment (the second grade in the efficiency of energy consumption) was certificated. The saving power by a fluorescent lamp was shown as 1.7 W.