An Electronic Ballast for Straightforward Use of Metal Halide Arc Lamps

An electronic converter, called “Moduleur,” for use with metal halide “daylight” lamps in production lighting is introduced. The functioning of metal halide arc lamps is summarized, and the shortcomings of conventional inductive ballasts for these lamps are pointed out in detail. The components of the Moduleur are enumerated and their functioning is outlined. A test bench for investigating residual luminous flux variations (stroboscopic effect) was set up. The residual variation was found to have a deviation of no greater than about ±1.5% from the average value. The metal halide arc striking procedure is very simple. This electronic ballast allows for the dimming of metal halide light sources without lowering their color temperature, a very useful feature.

Print ISSN

0036-1682

Published

1980-10

Content type

Information

DOI

10.5594/J01559