This is a bench-top power supply built to power my various electronics projects. It is built from a PC Power and Cooling Silencer 470 watt PSU.
Here is the stock PSU:
28A at 3.3V
32A at 5V
26A at 12V
.8A at -12V
Here is the inside of the PSU. It is pretty crowded in there as it is.
Next I installed a switch on the front to turn it on and off:
I then cut all the connectors off.
I installed 5 banana jacks on the front: Ground, 3.3V, 5V, 12V, and -12V.
I then connected the wires to crimp-on connectors, which can be screwed to the back of the banana jacks. Blue is -12V, red is 5V, orange is 3.3V, and yellow is 12V. I used up to 3 wires per connector, and up to four connectors per jack in order to get the maximum possible current flow.
Leads connected to the power jacks:
In order to start, modern ATX power supplies require a load on them, so I used these ohmite resistors to put load on the 5V and 3.3V rails.
The 5 Ohm resistor on the 5V rail got quite hot, so I built a heatsink for it out of some scraps: