| 摘要 |
PURPOSE:To stably operate a pulse motor by varying a drive voltage in response to a drive frequency. CONSTITUTION:A plurality of DC power sources 21A, 21B, 21C, 21D are prepared to obtain the prescribed frequency and DC voltage, changeover switches 22A, 22b, 22C, 22D are provided in response to the power sources 21A-21D, and the power sources 21A-21D and the switches 22A-22D are associated to operate a power source 23 for driving a pulse motor. Thus, the voltage of the power source can be altered in response to the frequency of the power source to be applied to the motor. |
