| 摘要 |
PURPOSE:To perform automatically operation in interval photography by outputting an interval signal while a constant-period operation signal is supplied to a common jack. CONSTITUTION:Only a switch 24 is closed in interval mode, and switches 20 and 22 are opened. A transistor (TR) 216 turns on for the specific period according to negative pulses obtained from output pulses of a timer circuit 186 to supply a specific-period interval signal to a motor driving device 14. Consequently, interval photography is started. Then when a release switch 34 is closed, the output of a T flip-flop 126 falls to a level L to stop the generation of the pulse signal. Thus, the interval mode starts by closing the switch 34 once and ends by closing the switch 34 once more. Thus, automatic operation is performed in interval photography. |
