An autotransformer is a transformer having part of its winding included in both the input and output circuit. A simple autotransformer connection is shown in Fig. 1. Note that because there is a ...

Figure 2 Autotransformer step-down with unity coupling coefficient. I guess it’s time for me to say “mea culpa.” I must be getting careless in my old age. However, the two models above can be ...