日光灯电路中并联电容器的作用及一个易误解问题的澄清

Function of parallel capacitor in fluorescent lamp circuit and clarification of an easily misunderstood question

日光灯电路中并联一个电容器后,构成R-L-C电路,利用它的充、放电而进行的能量储存和释放功能,使得电路的功率因数加大,从而起到提高供电效率和减少能量损耗的作用,但在这个问题的讨论中经常出现一个误解:认为并联电路器能减少日光灯的能耗。本文对并联电器的作用进行分析,并对上述易出现的误解加以澄清。

If a capacitor is paralleled into fluorescent lamp circuit, there will be a R-L-C circuit, which plays an important role in raising power supply efficiency and reducing energy waste. However, there exists an easily misunderstood question： The parallel circuit can reduce the energy waste of fluorescent lamp. So,an analysis is made of the the function of parallel capacitor and a clarification is made of the the function of parallel capacitor and a clarification is made of the easily misunderstood question.