生活离不开电动机。现在,我们自制一个电动机,同时探究电动机转动的奥秘。制作电动机肯定离不开铜导线,去哪里找那么长的铜导线啊?不要着急,我们可以充分利用生活中的废旧材料,可以从废旧的节能灯电路板上取下铜线用以制作电动机。用钢丝钳将里面的磁芯取出来(如图1所示)。这样不仅有了铜导线,还省了绕制。好了,我们再来准备其他的制作材料。图1 Life is inseparable from the motor. Now, we make a motor of our own while exploring the mystery of motor rotation. Make sure the motor can not be separated from the copper wire, where to find such a long copper wire? Do not worry, we can make full use of the life of the waste materials, can be removed from the waste of energy-saving lamp circuit board copper used to make the motor. Take out the magnetic core with a wire cutter (as shown in Figure 1). This is not only a copper wire, but also save the winding. Well, let’s prepare other production materials again. figure 1