最近,读了《物理实验》1983年6月号中刊载的这篇短文,有以下几点看法,提出与崔庆印同志商榷: 1.在电路与器件一段中所说的“变压器”似应叫作铁芯自感线圈为妥。为了使演示成功,其铁芯应该采用高导磁率的软磁性材料制作,用碳钢做铁芯是不恰当的。这是因为碳钢的剩磁较强,断电后铁芯中仍有较大的磁感应强度B,所以磁场能量是不可能大量回授给电 Recently, I read this essay published in the June 1983 issue of “Physical Experiment” for the following observations and proposed to discuss it with Comrade Cui Qingyin: 1. The “transformer” in the circuit and device section may be called Core self-inductance coil is appropriate. In order to make the demonstration successful, the iron core should be made of soft magnetic material with high magnetic permeability. It is not proper to make the iron core with carbon steel. This is because the remanence of carbon steel is strong, there is still a large magnetic induction intensity B in the iron core after the power is cut off, so it is impossible for the magnetic field energy to give back a large amount of electric power