贵刊在1986年9月第二卷第三期上刊载了两篇文章,题目分别是“怎样用J2460型电子开关观察三相交流电”(简称“文Ⅰ”)和“怎样用电子开关做物理实验”(简称“文Ⅱ”),介绍了用三相交流电,借助电子开关和J2458型教学示波器,观察三相交流电波形的方法。鉴于许多学校的教室甚至实验室都不装三相交流电,只装单相交流电的实际情况,我们根据RC电路的相移原理,和J2460型电子开关的输出与输入反相的特点,设计了一个简单的RC移相电路,与 Your magazine published two articles in the second issue of the second issue of September 1986, titled “How to Observe Three-phase AC Power Using the J2460 Electronic Switch” (abbreviated as “Text I”) and “How to Use Electronic Switches to Make Physics ”Experiment“ (abbreviated as ”Text II"), introduced three-phase alternating current, electronic switch and J2458 teaching oscilloscope, observe the three-phase AC waveform. Since many classrooms and even laboratories in schools do not install three-phase AC power and only install single-phase AC power, we designed a circuit based on the phase shift principle of RC circuits and the output and input phase reversal of J2460 electronic switches. Simple RC phase shift circuit, with