| 摘要 |
PURPOSE:To simplify the circuit structure of a driving gear, by driving and controlling two step motors in a control circuit and in a voltage output circuit. CONSTITUTION:When the first and second step motors 4 and 6 are driven at the same time, a voltage output circuit 2 outputs DC high voltage. Driver circuits 7 and 8 are changed over to a stator windings 3 and 5. Both step motors are driven for predetermined quantity respectively. The second step motor 6 is then stopped and held. When an external signal is inputted into a control circuit 1 so as to drive the first step motor 4 only in predetermined quantity, the voltage output circuit 2 outputs DC high voltage. The driver circuit 7 drives the first step motor 4, while the driver circuit 8 stops and holds the second step motor 6. When both step motors 4 and 6 are stopped and held, low leakage voltage is outputted from the voltage output circuit 2. |
