摄影时常用的小型闪光灯耗电都较大,因此一般都采用可充电池为其供电。但如使用频繁的话仍需经常对电池充电,并且充电前有时还要对电池进行放电,终究感觉不太方便。其实在拍摄场所相对固定的情况下我们完全可以采用交流电为闪光灯供电,只要将民用交流电经筒单降压、整流后 Small flash commonly used in photography power consumption are larger, so generally use rechargeable batteries for its power supply. However, if it is used frequently, the battery needs to be charged frequently, and sometimes the battery is discharged before charging, which is not convenient in the end. In fact, the shooting place is relatively fixed circumstances we can use AC power supply for the flash, as long as the civilian AC by the single buck, rectified