I am designing a 3D printer. I need 12V and 5 amp for powering the printer extruder and 11 amp for powering the heated bed.
At the moment I am using the model Model S-240-12 capable of delivering 12V at 20 amp.
In order to reduce some weight I thought that if I replaced the switching power supply for something smaller it would be great
I was thinking in replacing it for this AC-DC Adapter that says that it can deliver 12V DC at 16 Max:
So here I have some doubts.
1) If I am correct if I use the AC-DC Adapter provided in the link, I just need to make a current divider with the ramps and it will work fine, isn't?
2) The switching power supply has 3 terminals. Is it possible to connect the COM terminal that I want with any of the 3 +V terminal to close the circuit? Or is there an specific order that I have to follow?
3) Every closed connection of the switching power supply terminals is it capable of delivering 20 amp? But if one closed connection at the moment is delivering 20 amp. The other two closed connections are not going to be capable of delivering anything, right?
4) In my local city, it is not possible to find AC-DC adapters capable of delivering 16 amp. The maximum amount of current that I have found is 6 amp. After that if you want something that can deliver more current you need to use an switching power supply. So why is this? How is it possible that this company has an AC-DC adapter with those specifications? Is it legitimate?