装置运行原理详解。 First, the switch 12 is closed. Because the transistor 14 is off, no current flows through the winding 13a. 首先，开关 12 被关闭，因为三极管 14 是没有导通的，没有电流流过线圈13a。 Next, the motor is started by rotating the rotor 20, say, in a clockwise direction. The rotor may be rotated by hand, or by a conventional motor-starting device or … Continue reading 专利US6545444——利用单极电机制造反电动势充电的方法和设备