美格DJ-717彩色显示器,为了节约电能,减少对电网的污染与损耗,在整流电路之后主/副电源之前设计增加了功率因数校正电路,实际使用效果很好。从对能源的节约和保护的角度来讲,具有很强的现实意义,必将被越来越多的显示器和其他电器设备采用。为使读者了解这种显示器中的新型电路,现介绍给读者。有关电路如图1所示。220V交流市电由BD304整流后,输出的是单向 US grid DJ-717 color display, in order to save energy, reduce pollution and loss of the power grid, after the rectifier circuit design of the main / auxiliary power factor correction circuit is added before, the actual use of good results. From the perspective of energy conservation and protection, it is of great practical significance and will surely be used by more and more displays and other electrical equipment. To enable readers to understand this new type of display circuit, are introduced to the reader. The circuit shown in Figure 1. 220V AC power by BD304 rectifier, the output is one-way