I'm converting a few more computer power supplies into 12 VDC 20 amp DC power supplies. These are clean, lightweight, and really pump out the current. They're great for running lipo chargers at the field (our club has AC power in the shed and on the flight line). There's more info on this from my old ham radio blog at:
http://wb4iuy.blogspot.com/2015/02/converting-computer-supplies-for-ham.html
Dave AMA119484