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最实用的电了系统包括一个传统的单相全桥整流t器和一个输入滤波电容。这种类型的电路可取得来自电源线的电流峰值，产生一个高的谐波。高的总谐波失真（THD）和低的功率因数（PF）可降低最大功率和电力网的效率。为了适应欧洲标准（EN61000-3-2），即对于120V或240V
The most practical power system includes a traditional single-phase full-bridge rectifier and an input filter capacitor. This type of circuit can take the current peak from the power line, resulting in a high harmonic. High total harmonic distortion (THD) and low power factor (PF) reduce maximum power and grid efficiency. In order to adapt to European standards (EN61000-3-2), ie for 120V or 240V