| 摘要 |
PURPOSE:To obtain smooth and efficient rotationary motion by monitoring the terminal voltage of an exciting coil to detect a pole isolation, and deciding the start of energizing the coil for next attracting by the detection signal. CONSTITUTION:When two exciting poles 43 are excited in the state that the poles 41, 42 are attracted to excite the pole 42, the pole 41 is separated. At this time the fact that a spike voltage is generated to isolate the pole 41 is detected by a delay circuit D1. After the preset delay time, a signal is generated to the OFF terminal of the next switch circuit SW2 to deenergize the pole 42, inputted to the ON terminal of the third switch circuit SW4 to excite the exciting pole 44. Then, the pole 44 is attracted. |
