Actually yes, there is a mistake in my text.
The first image is the one with +5V across load 1 and -12V across load 2. The center point is a zero potential. The second image is the other case. I reversed the explanations. . .
But in both cases, there is no worry about shorting. The batteries are only connected together at one terminal, not two. (keep in mind for things to be shorted together, they have to be in parallel). |