Abstract
This paper describes the simulation results of metal halide lamp operation by using the state va riable equation model that based on the electrical conductivity of plasma, which model reported by authors. At first, the warm-up time of lamps are investigated by changing coefficient (s) in the equation, and the lamp shapes such as diameter of the arc tube, distance between electrodes and glass thickness of the tube. Next, the effect of initial vales of the state variables to the wram-upperiod are investigated on ambient temperature and preheating burning, etc. From these results, it is cleared that the rapid light standing up of metal halide lamp depend on the vaporization speed of enclosed material s, and the raising velocity of lamp temperature. And the experimental results of adjusting the lamp input power shows the possibility of shortening the warm-up time.
