| 摘要 |
PURPOSE:To reduce the noise and the heat of a motor, to enhance the efficiency of a motor and to obtain a high speed response by providing rated voltage supplying means and high voltage supplying means. CONSTITUTION:Assume that the time reaches the exciting period of a motor coil L1, and a transistor Q1 is turned ON. Simultaneously, a transistor Q2 is turned ON, a sufficiently high voltage E1 higher than the rated voltage of the coil L1 is applied to the coil L1, and a coil current IL abruptly rises. When the predetermined period T1 is elapsed, the transistor Q2 is turned OFF, a diode D2 is then turned ON, and a current is supplied to the coil L1 by the output voltage of a voltage converter 3 which is stepped down to the rated voltage of the coil L1 by the power source E1. |
