# Wiring different DC voltages to use 120V AC

I apologize in advance if this is simple. I've only had an intro to circuits class and all we did was analyze existing circuits, and even that's been a while.

For a design project I'm trying to wire together (theoretically, not in practice) 4 thermoelectric plates (15.4V DC and 1.7 ohms each), 2 computer fans (12V DC and 0.15A each), and 2 door lock motors (12V DC and 2.6A each). To clarify, I don't actually have to do this. I just have to prove that it's possible and show the set-up to make it possible. Ideally, I'd like to wire it all up with a/some AC to DC converters so that everything can run off of a 120V AC wall outlet.

I've done some initial analysis and found the following requirements for a few set-ups:

2x motors in parallel: 12V/5.2A
2x motors in series: 24V/2.6A

2x fans in parallel: 12V/0.3A
2x fans in series: 24V/0.15A

4x Thermoelectric plates in series: 61.608V/9.06A
4x Thermoelectric plates in parallel: 15.4V/36A
2x Thermoelectric plates in parallel then series: 30.8V/18.12A
2x Thermoelectric plates in series then parallel: 30.8V/18.12A

What's got me confused is how to wire everything together since they have different voltages, amperages, or both. I apologize if this is simple, but as a mechanical engineering major, I have almost zero experience or knowledge about anything more than simple circuit analysis.

Any assistance that can be provided would be greatly appreciated.