| 摘要 |
PROBLEM TO BE SOLVED: To suppress the voltage of the power source of a control circuit system from being lowered at an overloading time and to save energy without providing a camera with a dedicated DC/DC converter. SOLUTION: A boosting part 4 is provided with a first boosting part 2 arranged at a boosting transformer having a primary coil and plural secondary coils and a second boosting part 3 having a different winding ratio from the first boosting part 2. The first and the second boosting parts 2 and 3 are switched by a control signal outputted from a boosting control part 1. A main capacitor charging part 5 is connected to one of the secondary coils so that an output voltage generated at the secondary coils of the boosting transformer is accumulated while the boosting part 4 is actuated and outputted to a stroboscopic light emission part 6. Besides, a part for making a voltage constant 7 is connected to the other one coil of the secondary coils so that the output voltage generated at the secondary coils of the boosting transformer is stabilized to the prescribed voltage and the constant voltage is supplied to the control circuit system. |
