| 摘要 |
PURPOSE:To perform a system necessary for constant speed rotations of two types with low power consumption and small size by adding a ready current converter by program control. CONSTITUTION:A microcomputer 1 generates a signal (d) for controlling the rising characteristic, constant-speed rotation characteristic and falling characteristic of a pulse motor 5, and applies a rotation signal (a) and a high speed signal (b) to a current controller 2. The signal (a) is set to H level at stopping state time, and the current supplied to the motor 5 is decided by a resistor 10. When the motor 5 is rotated, the signal (a) is set to L level, and the current supplied to the motor 5 is decided by the resistors 10, 11. Further, the signal (b) is set to H level at high speed rotation time, and the current supplied to the motor 5 is decided by the resistors 10, 11, 12. |
