Lamp status detection circuit of electronic ballast, ballast controller and electronic ballast

摘要

The present invention provides a lamp state detection circuit capable of detecting and controlling a lamp mounted on an electronic ballast according to various situations according to various situations, and a ballast control device for efficiently controlling power and light output in the ballast using the detection circuit. The electronic ballast is designed to detect no load by detecting the number of lamps installed and to control the power according to the number of lamps when the system is shut down and restarted due to various abnormal conditions from the initial operation of the ballast system. After pre-heating to extend the life of the lamp, discharge is made in the soft start section, and when there is a control signal indicating that it is normal after this time, the lamp is discharged if it is not viscous by checking the discharge of the lamp. Control the light output, control the light output according to the brightness of the surroundings, It is to improve the reliability and efficiency of the whole system by controlling the lamp to be optimal by detecting the aging degree of the lamp at each time until the end.