Hi Guys,
Sharing with you all 2 of my ATX power supply projects.
One is a variable ATX power supply and the other is fixed voltage mini ATX power
supply.
Attached links contain the detail steps how i have build them.

Datails:-http://www.dothediy.com/2015/09/variable-benchtop-atx-power-supply.html

Details:- http://www.dothediy.com/2015/07/mini-atx-benchtop-power-supply.html

 

once they are modified, they are no longer ATX, ATX is a form factor and connector standard for computers. looks like pretty well put together modified ATX supples.

 

the way i mod these atx psus is to use the full output by altering the pwm, and making it go from 3v to 28v @22 amps...

 

Very nice.