In the name of science, I introduced three of the worst 12V ... power supply! Removing the plate reveals the simplest circuit of the batch: No EMI filter (though space for one), no controller. The ...

That means many of them have custom and anemic power supplies. We aren’t sure if [bm_00] needed a regular power supply ... an adapter, right? Apparently not. The computers run totally on 12V ...

is a 12-volt supply with double the amperage capacity -- 3.0 amps. Both models are "wall wart" style AC adapters, meaning they feature brick-like power supply connected to two male prongs.

He does mention that if he built another one, he might consider regulating the 12v output as well, so that he can power the adapter with a laptop power supply instead of a separate dedicated wall ...