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在氖管的两极间加上60～70伏电压时,管内会产生一种玫瑰红绚丽光彩。用它做一些电学实验效果明显。观察交流电制做用500kΩ～1MΩ电阻与氖管(如试电笔中的)串联,将其固定在长约20cm小木棒一端,分别在它们串接后的“空头”焊接1～2米长不同颜色的软导线,最后再用绝缘胶布带将所有裸露的金属部分包好,以防触电。演示将软导线与200～300伏直流电源相接
When a voltage of 60 to 70 volts is applied between the two poles of the fistula tube, a brilliant red rose will appear in the tube. It is obvious that using it for some electrical experiments. Observe that the alternating current system is made of 500kΩ～1MΩ resistors and connected in series with a helium tube (such as a test pencil), and fix it at one end of a long wooden rod about 20cm long. They are welded in “short” after they are connected in series and are 1 to 2 meters long. Different colors The soft wires are then wrapped with insulating tape to wrap all exposed metal parts to prevent electric shock. Demonstrate the connection of soft wires with 200 to 300 V DC power supply