本刊2011年第9期刊登了《为何在“通电自感”实验中观察不到“断电自感”现象》一文.指出在使用“J2446自感现象演示器”左侧的器材做通电自感实验时,延时效果比较明显,但用它做断电自感实验时,却观察不到灯泡闪亮的现象,使得断电自感现象只能独立地使用示教板右侧的器材来演示. Issue 9, 2011, published in the “why” in the power of self-inductance “experiment did not observe ” power off self “phenomenon ” pointed out that the use of "J2446 self-inductance phenomenon The side of the device to do power self-inductance experiment, the delay effect is more obvious, but use it to do power-off self-inductance experiment, but did not observe the phenomenon of light bulbs, making the phenomenon of power outages can only be used independently teaching The right side of the plate to demonstrate the equipment.