Features of the circuit:
- Adjustable Voltage 1.2- close to maximum input
- Adjustable Current once a set threshold is hit voltage drops to maintain a constant current
- Low Parts Count
- Precision Regulation
- High Current Output
In the image I am load testing the supply over 100 watts and it isn't even breaking a sweat. The heatsink didn't even warm up. The analog meter is on the 10 amps scale and is reading 8 the digital meter is on voltage and reading 13.7. 8 X 13.7 = 109.6 Watts!
I have no doubt my supply can deliver beyond 300 watts with the components I have used to build it. More on that later.
Step 1: The Schematic
I found this on a Tripod web page.
There is a lot of schematics on pages there and I built a number of the circuits and liked this one far more than any others I made.
Whoever it belongs to the credit is theirs. I am putting this file up here in case someone else wants to make their own. This is what I used, schematics are helpful if I want to replicate a circuit. I assume this will be helpful to someone else as well. I could have redrawn it and claimed it was mine I guess, but I didn't. I did convert it from the original gif it was though. The original file name of this was ps2-30v.gif Make one and enjoy!