Abstract: The invention relates to a device characterised in that said device is made of the assembly of a plurality of microgenerators, each including a magnetic circuit as a loop of segments for the insertion of a winding of turns of copper wire (3) and the application thereof against the inclined planes (7) of magnet segments (F, G) with axial magnetisation and segments made of a material with good magnetic conductivity, such as soft iron, combined to create said magnetic loop circuit expressed by the magnetic field inside said segments (D, F, G), and in which the magnetic field lines act on said winding in order to create an electric voltage at the ends of said copper wire, the segments (D, F, G) being enclosed in a frame (8), such that each microgenerator is unitary.