关键词: 尖峰信号, 电源线, 感性负载, 传导干扰

Abstract: For the inductive load, in the experiment of the power cable peak signal, it is a hard problem for catching the peak value. Through the analysis of inductive load’s dynamic characteristic in the switching, the formation mechanism and impact factor for power cable peak signal were studied. And on this basis, alternative method for power cable peak signal was put proposed in the condition of direct-current measurment. The alternative method is in accordance with theory by the result of simulation and experiment，which can be used to solved the random problem for the peak value with a standard method, extremely compressed the dynamic range of the peak value, and effectively lowered the risk level in the test process. There is a reference value for the measurement and analysis of power line conductive disturbance.

Key words: Peak signal, Power cable, Inductive load, Conductive disturbance