| 摘要 |
PURPOSE:To simplify the construction of two-contact switches and to facilitate operation, by shifting the switches to set two D-type flip-flops to rotate the driving motor forward or backward or stop it. CONSTITUTION:The switch SW1 is closed to set the D-type flip-flop D-1 at a high level, energize a relay coil LA through a buffer circuit B-1 and forwardly rotate the motor M for driving a powered window or the like. Another switch SW2 is closed to set another D-type flip-flop D-2 at a high level and rotate the motor backeard. When one of the flip-flops D-1, D-2 is set by a signal from the switch, the other is reset. Since the driving motor M is rotated forward or backward or stopped through the switches of very simple construction, sure operation is enabled. |
