China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

High pressure sodium ballasts and lamps:High pressure sodium and high-pressure mercury lamp is different in performance, not only a mercury high-pressure sodium lamp inside, also filled with sodium during operation of the lamp, sodium, sodium and mercury in a liquid mercury stored in the form of the gas discharge tube part of the cold end. High pressure sodium lamp during the life of the lamp power as the lamp voltage variation and change. This situation is different in high-pressure mercury lamp, high pressure mercury lamp power changes the voltage remains relatively stable because the work pressure mercury vapor pressure of mercury inside the lamp is in saturation. High pressure sodium lamp voltage and lamp power is based on the relationship between the discharge tube contains mercury vapor and excess sodium caused. During operation of the lamp, only the part of the mercury and sodium vapor pressure is formed, and low vapor pressure that is reflected on the lamp voltage, it depends on the discharge "cold end" of the air conditioner. Cold junction temperature changes caused by vapor pressure changes, resulting in lamp voltage changes, which occurred in lamp power changes. In a certain power range of the lamp voltage and lamp power nearly linear relationship between.

HPS ballast manufacturing is not complicated, but often because of design, process and selection of materials, the differences in the same specifications from different manufacturers equipped with high pressure sodium lamp ballast, the ballast showing characteristic curves of different shapes ,Poor quality ballasts will cause the lamp during use ultra-load operation, or job instability.