Changes

Create a lab Power Supply with from an [https://en.wikipedia.org/wiki/Power_Supply_Unit_%28Computer%29 ATX PSU].

It is a better idea to have the ATX set up in a box and to use the ATX connector to connect to the banana plugs. Basically, it is then possible to have the 5 usual plugs (GND, +3.3, +5, +12, -12) and add a regulated output (0-12V). The visualization for that regulated output can be analogical. However, if the system uses a micro-controller (see Buck converter below), a digital screen could be an option. That would also be great to have a current limiter on that regulated output.

That would be great to have a current limiter on that regulated output also.Linear regulators are excluded for this improvement because they dissipate way to much energy. A switch-mode power supply approach is favored <[https://en.wikipedia.org/wiki/Switched-mode_power_supply>switch-mode power supply] approach is favored. So far, a Buck converter is considered : [https://en.wikipedia.org/wiki/Buck_converterBuck converter] is considered.