I am going to make a power supply. I understand the smoothing capacitor and the full-wave bridge rectifier. I am trying to make a 60V, maybe 10A power supply - maybe only 5A, but I would prefer 10A. I don't have a transformer for it, though. I have researched a fair bit on transformers recently, and am now looking to either buy or build one. It will need to be 300W or 600W, so a fair bit of power. I am having trouble finding where to find one, and I don't know how to build one with the materials I have. Does anyone have any suggestions. BTW, I should mention, my country's mains power is 240V, 50Hz, so I will need a 4:1 transformer. On a side note, the 60V power supply that I had bought, Yihua 605d (it was cheap), has stopped working after I connected a slightly-charged large capacitor to it. I looked inside to find a fuse but couldn't see one. What else may have been damaged to cause it to stop working? I do realise that I could pilfer the transformer out of the power supply, but I would prefer to try to fix it first.