| 摘要 |
PURPOSE:To photograph surely for one frame at least without stopping a motor on the way by holding certainly a shutter release signal for a prescribed time. CONSTITUTION:When a release button is depressed to close a release switch S1, the output of an NAND gate A6 is held in the low level for a prescribed time after closing of the switch S1. Consequently, the output of an inverter N7 becomes low-level, and outputs of NAND gates A8 and A9 become high-level. Since the input of an NAND gate A15 other than outputs of NAND gates A8 and A9 is in the high level in the initial state, the output of the NAND gate A15 attains to low-level when outputs of NAND gates A8 and A9 attains to high- level, and the output of an NAND gate A17 become high-level, and the output of an inverter N32 attains to low-level. Consequently, a transistor TR T3 is turned on, and TRs T4, T5, and T6 are turned on, and electric power is supplied to a driving motor M1, and this motor M1 starts the rotation for film idle feeding. |
