1. Question 23 from http://www.allaboutcircuits.com/worksheets/trans1.html:
Suppose you need to power a 120 volt, 600 watt heating element from a 240 volt source. You happen to have several 240V/120V step-down transformers on hand, but each one is only rated at 400 VA. Draw a schematic diagram showing how multiple transformers could be used to match the 120 volt load to the 240 volt source.
Answer is just this diagram:
As usual with that site, they don't really explain the answer. Can anyone tell me why this works? I assume it has something to do with the transformers being in parallel.
2. Also another question, adding multiple voltage sources in parallel gives an error in my simulation, so I assume this is cant be done IRL either (I get that voltages are the same in a parallel circuit, but what actually happens when you put an extra voltage source in parallel?)