| 摘要 |
<p>PURPOSE:To control a motor for any direction in which it runs forward or backward through a single controlling circuit by providing a switching circuit to change a motor driving current direction between a motor controlling circuit and the motor. CONSTITUTION:A double throw switch 16 is provided between a motor controlling circuit 12 and a motor 14, and the direction of a current fed to the motor 14 is changed by transferring the double throw switch 16, thereby changing the direction in which the motor 14 runs. The motor 14 can now be controlled likewise through the motor controlling circuit 12 when the motor 14 runs forward or backward.</p> |
