Mini Lab Power Supply: 1.3–33 V DC, 14 V AC, 1.1 A

I needed a compact power supply that could provide roughly 5–20 V DC and 12–16 V AC. Because an AC output is required, I used a conventional mains transformer, like the type commonly found in alarm control panels and intercom systems. This project was inspired by the “Chordless Lab Power Supply” (https://www.thingiverse.com/thing:2085223).

You can read the detailed description here: https://motleyscience.com/2022/10/16/mini-lab-power-supply-1-3-33-v-dc-14-v-ac-1-1-a/