| 摘要 |
In an electronic photographic flash apparatus comprising a DC-DC converter, a high tension capacitor, and a gas-discharge flash tube to produce a light flash by consuming electric energy stored in said high tension capacitor, the improvement is that the apparatus further comprising a low tension capacitor and a switching circuit which connects the low tension capacitor parallel to the DC low voltage source for charging therein at an off-state of the apparatus, and connects the low tension capacitor in series to the DC low voltage source in a subsequent stand-by period thereby to boost the operation of the DC-DC converter at an initial stage in the waiting time when the power switch is on, so as to quickly charge up the high tension capacitor.
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