Abstract: A generator for transforming a translational movement of a push element into an accumulation of electric charges comprises a converter capable of transforming a magnetic field variation into a charge accumulation, and a magnetic field source defining a housing in which a magnetic field prevails. The push element is movable from a first position to a second position along a translational direction. According to a first aspect, the generator comprises a transmission device for transmitting the movement of the push element into a rotational movement of the field source or of the converter in order to vary the magnetic field in the reference plane of the converter. According to another aspect, the push element is moved from a first position in which the converter is subject to a first field configuration, to a second position in which the converter is subject to a second field configuration, different from the first.