You can buy these small DC-DC rack mountable power supply's for very cheap online. But their is no case for the back of them.
Search for things like DPS3003.
EEVBlog Review of one: https://youtu.be/qWAqSSLwBtw
Since there is no case, I decided to make one for myself. Most of the existing case designs I found online had DC barrel jacks and on/off switches that I didn't want.
I had an old laptop charger (19V) for a dead laptop that I thought should work good. Most applications I would use would be 3.3V to 12V circuits, so 19V should be fine.
- Your own AC-DC external power supply brick to sacrifict to power this
- 4 M3 * 12 screws
- 4 M3 nuts
- 2 Binding posts
