| 摘要 |
PURPOSE:To avoid such trouble in that a film is advanced with no operation of a film counter, by keeping a switch off while the counter is at a position between the start position and the first driving scale. CONSTITUTION:A motor 1, a switch SW1 that controls the electric conduction to the motor 1 and a power supply E are provided to a motor control circuit. The SW1 gives the conduction to the motor 1 and turns it when a contact bar C is connected to the side (a) and short-circuiting the both ends of the motor 1 to cut off the conduction when the bar C is connected to the side (b) to give control as well. |
