It is not everyday that you run into people designing their own power supplies — check out this great project from the Adafruit Forums by community member “Physics_Dude”:
Alright, I recently had the need to build a rectified AC/DC power supply. Yes, I mean rectified, not regulated. It won’t be used to power sensitive projects.
I used Adafruit’s current and volt meters to read out said values.
Featured Adafruit Products
Panel Current Meter – 0 to 9.99A: Put a current meter anywhere with this very handy display. This panel meter requires a DC voltage to run, and then has two thick gauge wires to measure current draw. A shunt is already on board so its very easy to hook up! (read more)