The role of TRANSFORMADORES DE POTENCIA would be to switch voltage from value to a different; normally from higher to lower voltage or vice versa. They incorporate two groups of coils or windings which are connected to a ferromagnetic core. There are two types of coils—the primary and secondary conductors. https://canvas.instructure.com/eportfolios/3503948/home/do-you-know-what-electrical-transformers-do