| 摘要 |
PURPOSE:To obtain a drive circuit which has high efficiency and stability by controlling a chopper type constant-voltage power source by synchronizing with a chopper period, thereby preventing chopper circuits from interfering with each other. CONSTITUTION:A pulse motor power supply device 1 is a constant-voltage chopper type, varies ON-OFF cycle of an inner transistor to hold a motor supplying voltage V<+>5 constant in response to a load, and the frame period is synchronized by pulsating by extracting the frame period of a pulse motor constant current chopper drive device 2. The device 2 receives a constant voltage from the device 1, and applies a constant current to a pulse motor 3. The device 2 detects the supplied current, and feeds a synchronous signal to the device 1. |
