The invention concerns an electrical module for adapting a first signal of a first system to a second signal of a second system, including: an input arranged so that a power source can be connected thereto, said power source delivering a first signal, said first signal being a direct signal, a converter module arranged to convert the supply voltage into an intermediate rectified signal formed of a direct component and a sinusoidal component; an inverter module arranged to output a signal compatible with a second signal of a second system.