| 摘要 |
PURPOSE:To execute exactly the flash photographing even immediately after a pre-light emission by providing two capacitors for accumulating flash energy, executing the pre-light emission by one capacitor, and also executing the flash photographing by using both the capacitors. CONSTITUTION:A titled device is provided with capacitors 4 and 48 for accumulating a flash energy of a flash tube 33. When the first stroke operation of a camera is executed, a pre-light emission starting switch 59 is closed, a pulse generator 60 is operated, and a pulse at prescribed interval is outputted for a prescribed time. By synchronizing with an output of the generator 60, a transistor 13 is operated, also the output of the generator 60 is provided to a delaying circuit 61, and the flash tube 33 repeats pre-light emitting and pre-light emission stop operations by an electric charge of the capacitor 48. Subsequently, when the second stroke is operated, the generator 60 goes to a non-operational state, an ON-signal of an X-contact is transmitted to the transistor 13 from a terminal 65, and also a transistor 56 becomes off. In such a way, the electric charge of the capacitor 48 and 4 is discharged to the flash tube 33, and even immediately after the pre-light emission, the flash photographing can be executed exactly. |
