... high stability of the function;3.The states of constant voltage,constant electric current and constant power can be converted into ... the safety;4.It has the protection functions of over voltage,short circuit,overload,sudden load change,unloaded,leaks electricity,etc ... ±10% (50Hz±2%);Input power :about 600 VA;Output voltage: (10 -3000)V, (Increase or decrease: 1V/step);Output current: (4 -400 ...