I built my power supply for working on electronics and charging batteries. I started at the murray state website. I used a 200 watt dell power supply that I had from a dead pc. Radio Shack has the 10ohm 10watt wire wound resistor that you will need to create resistance to keep the power supply running. While there pick up some binding posts. I primed and painted one set of binding posts yellow and blue for the 12v and 3.3v leads (to match the internal leads of the power supply). I had a switch in stock for this project, but would probably buy this switch for the next one. Where connections need protection this heat shrink tubing works well and helps if you want to color code. By adding an auto style 12v receptacle I can plug in all of my car chargers for phones, PSP etc. I bought a few sets of banana plugs at Radio Shack. I soldered some leads with alligator clips for easy temporary connections like running in a brushed motor. Leads with banana clips on both ends jumper to my Hobbico Quick Field Charger MKII. For $60 I can charge NiCD, NiMH and LiPo batteries.
