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在彩色电视机的开关电源中,输入交流市电都要经过二极管整流及电容滤波,得到不稳定的直流电压(约300V)。为了使用方便,往往采用一种叫整流桥堆的组件,即将4只整流二极管按桥式全波整流电路的方式连接,并整体包封,引出4只引脚便成了整流桥堆,简称桥堆或全桥。如金星C4720型彩电开关电源中的D901(RB156),如附图所示。整流桥堆在彩电开关电源电路中,是一个很重要的部件。如果整流桥堆损坏,
Switching power supply in the color TV, the input AC mains have to go through the diode rectifier and capacitor filter to get unstable DC voltage (about 300V). In order to facilitate the use, often called a rectifier bridge reactor components, about 4 rectifier diode bridge full-wave rectifier circuit connected, and the overall package, leads to four pins has become a rectifier bridge pile, referred to as the bridge Heap or full bridge. Such as Venus C4720 TV switching power supply D901 (RB156), as shown in the figure. Rectifier bridge pile in the color TV switching power supply circuit, is a very important part. If the rectifier bridge damage,