| 摘要 |
PURPOSE:To keep always the film stop position constant, by changing the time from detection of the film end to stop of the motor, in accordance with the power source voltage in the film rewinding device for camera. CONSTITUTION:When a film is rewound, a switch 2 is switched to the side of a contact (a), and the current from a power source EM is supplied to a motor M through a transistor (TR) Q4. When the film end is slipped off from a spool, a switch 5 provided in the rear side of the spool is closed. Then, TRs Q8 and Q7 are made conductive to start charging to a capacitor C0. A Zener diode is connected in the emitter side of a TR Q6; and therefore, when the power source voltage is loweed, the time to conduction is made longer, and the stop of a motor due to conduction of a TR Q5 is delayed, and thus, the stop position of the film end part is kept constant approximately. |
