230 V AC To 400 V DC Power Supply Circuit Diagram: Description : A lot of students are who don't know how to convert 230 volt AC to 400 DC. So today i am published ' 230 V AC to 400 V DC circuit diagram ' on my blog. Working principle of this circuit diagram is very simple. You already knew the working principle of a bridge rectifier. This circuit is same as bridge rectifier and the working principle is also same. The fuse is used to protect the circuit, if the current is greater than 1 A. Parts List Component No: Value F1 1 A B1 IN4007 C1 470MF/450V V1 230 V AC