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一、发明背景１．本发明的范畴本发明是关于荧光灯用电子镇流器，就是以控制振荡功率电平方法来改变灯的亮度，并控制灯亮度，可使灯在全亮至全无光之间变化。２．现有技术众所周知的最简单实用的就是白炽灯照明系统的亮度控制，而荧光灯照明系统较白炽灯更为经济，但是它不能?
First, the background of the invention 1. The present invention relates to an electronic ballast for a fluorescent lamp, in which the lamp brightness is controlled by controlling the oscillation power level and the lamp brightness is controlled so that the lamp can be varied from full light to full light. 2. The simplest and best known in the art is the brightness control of an incandescent lighting system which is more economical than an incandescent lamp but can not?