The idea is that you can put in the amount the PSU gives and with the information that it gets it will control if the sensors read the right amount. With a threshold of 1v+ and 0.05A, it will stop the simulation.
There will be two options. A constant and a dynamic current. It's for testing if a PSU is still useable or okay. (The simulation might be running up to 8 hours if possible)
Because the total wattage will be 2k and one of the MOSFET has a max of 272W.
That's the part I am a bit stuck at. On how I will control the 10 FETS accurately with only Arduino.
Feed the sensor with 5 volt. Then it will give the output I told in reply #8.
That 5 volt can likely be tapped from the controller 5 volt. Use a good Vin of 9 volt, not the fire alarm rectangular cell.