Abstract: A direct-current motor in which a rotor is provided with at least two regions having opposite permanent magnetic polarities and located opposite to an annular air-gap. The stator is constituted by at least one winding and one magnetic circuit comprising at least one yoke connected by means of arms surrounded in one case by the winding to at least two pole horns located opposite to the air-gap. At least one auxiliary permanent magnet is engaged within a space formed between two circumferential ends of the two pole horns, the ends being directed towards each other. The permanent magnet forms a longitudinal projection carried by a supporting post housed within an inter-pole space between the yoke and the two adjacent horns. The post is carried by an annular plate which is placed on an axial end face of the magnetic circuit.