| 摘要 |
PURPOSE:To perform automatic raising of a door glass when the door glass is lowered through reversing of a motor. CONSTITUTION:When a motor 2 is reversed with a power window switch 1 turned OFF, a reverse starting voltage is generated at a U' terminal of a motor 2 and applied on a coil 16 through a coil operating circuit 18. A moving contact 1e is attracted by means of the coil 16 and switched to a door glass UP contact 1a. The output voltage of a comparator 25 and an Hi reference voltage are compared with each other by means of a comparator 26. Since the Hi reference voltage is higher than the output voltage, a switching transistor Tr is energized, and a coil operating circuit 21 and a switching circuit 22 are closed. A coil 17 is operated to hold the attracted state of the moving contact 1e, and a door glass 3 is raised through forward drive of the motor 2. |
