After a quite a while, finally, I'm coming with new project. It's about simple power supply which anyone can make at home for really cheap price ($10) without transformer. It gives max 25V with 2A. Why can't give more than 2A? It's because LM317 can max handle 2A (TO-220 package), but i predicted that maybe it won't be enough so i made PCB board which can handle at least 5-8A of course without LM317. If i want more power, with output of 5A...
