The role of TRANSFORMADORES DE TENSION is to switch voltage in one value to another; normally from higher to lower voltage or vice versa. They incorporate two groups of coils or windings which can be connected to a ferromagnetic core. There are two kinds of coils—the primary and secondary conductors. https://beauevmc58251.wikiparticularization.com/1222711/do_you_know_what_electrical_transformers_do