讨论了变频电源输入电压的非正弦对测功电机的性能影响，提出改善不利影响的措施。
In this paper, the functional influence of input voltage non-sine of Varible-frequency voltage source on Electric Power Dynamometer motor discussed. and methods of improving them were also given.
用一对二级管以反向偏执于正常方向的形式连接至电源端，来保护过高的输入电压。
Protecting against excessive input voltages using a pair of diodes to power supply reversibly biased in normal direction.
本文介绍一种新型的直流开关电源，该电源是一种直流电压输入，三种直流电压输出，并能够达到相当高的效率。
A new type of DC switch power which is possessed a DC voltage input and three DC voltage output, and is able to reach higher efficiency has been introduced in this paper.
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