Final Stage of The Puzzle

 Now the final stage, we put the positive and the negative terminals.Then we put on the plug and it must be knotted so that it will not be pulled easily (advice from a friend). We connect the plug to the fuse and the switch.

Then we put a pair of screw on the most heavy and expensive part of the power supply. Then we secure the casing of the power supply to give some protection to its internal parts. Then we tested it if it really works by using the multimeter.