Actually this is based on the digital power supply presented in Electronic Enthusiast. I just changed the control voltage to 0-5V for my DAC then changed the controller to PIC 16F877.
What I like about this circuit is that it has all the function I need for Laboratory Supply. My design incorporates keypad to enter desired voltage and current limit. The only limitation I found is the unavailability of multi output (multi winding) transformer.
I've used 8bit DAC thats why the output is 0-25.5V with scale of 0.1V and the current is 0-2.55A with step of 0.01A.
I would like to enhance this with the help of the master and share it to elab members.