... of isolation transformer,bridge rectifier,large capacity filter,power tube or big power modular regulating circuit,protective circuit, it can work ... ApplicationIt is available for any places that requires DC power supply as laboratory,industrial control,telecommunication,electrical maintenance,accumulator ... .5mV CC≤1×1/1000+0.3mVInput voltage220V±10%Power source effectCV≤1×1/10000+0.5mV CC≤1 ...