AC / DC modules are galvanically separated charging modules connected as an AC / DC converter. The modules enable continuous regulation of output voltage and current and regulation of output power and current limitation via communication interface. They are equipped with a mains interference filter to suppress interfering terminal voltage and a choke enabling suppression of harmonic frequencies. They meet the requirements of the relevant EMC standards. The modules are primarily intended for installation in fast charging stations for electric vehicles, but they can also be used as a general galvanically isolated source of direct voltage and / or current.