AC/DC switching converters are highly nonlinear. Therefore they draw a non-sinusoidalcurrent with a very low power factor.
DC开关变换器非线性程度很高，输入电流为非正弦形式，功率因数极低。
2
The measurement principle of the average power for nonsinusoidal period current circuit is introduced in this paper.
介绍了非正弦周期电流电路的平均功率测量原理。
3
RL circuit is taken into consideration, in which the transient current signal includes a period component varying in sinusoidal waveform and a non-period component varying in exponential waveform.