Saturday, 29 August 2015

Simple Breadboard Power Supply

It's very satisfying to build something for which you've all the parts to hand, there's no waiting around, just immediate gratification. This little build is such a thing. It's a dual-voltage (5v and 3.3v) power supply which plugs into a breadboard and is handy for projects which aren't powered from a USB tether (e.g., wireless microcontroller prototypes or projects which don't use a microcontroller at all, hard as that might be to believe).

It's loosely based on the circuit below, although I used different values for the capacitors, having first done a bit of research to discover that the 100nF ones are used to filter high-frequency noise. If I have problems with that in the future I'll add them.