用220 V灯泡代替小电珠,使用“教学用可拆变压器”演示自感与互感现象的创新实验,通过实验,得到以下结论:可拆变压器的1 400匝线圈在实验中起到“通直流,阻交流”的作用,电感对交变电源有明显的阻碍作用。 With 220 V light bulb instead of small beads, the use of “teaching detachable transformer” demonstration of self-inductance and mutual inductance phenomenon of innovative experiments, through experiments, the following conclusions: Detachable transformer 1 400 turns of the coil in the experiment played Through the DC, AC blocking resistance, "the role of inductors on the alternating power supply has obvious obstacles.