Here is a small DIY project, for a portable/bench-top power supply. We are not aiming for the best regulation, neither most power. But portability and bench-top estate optimisation.
This is based on the famous DPS3005 (about 25€)
Let’s 3D print an enclosure, found on Thingiverse:
And grab all the jelly beans needed:
Does work quite well:
With not much noise (static 100mA load):
And as I’ve this fancy portable solder iron with a bunch of li-ion cell:
It works on the road!