Generators and direct-current motors have excellent operating characteristics, and therefore widely they are used in the technology. The important merit of direct-current motors is large starting torque, which makes with their irreplaceable with the use in transportation means. However, both the generators and the direct-current motors have one essential deficiency, connected with the need of using in them the collector system, which consists of collector and brushes. Collector presents the collection of the lamellas, located on the cylinder, made from insulation, and between the lamellas there are clearances. This leads to the rapid wear of brushes. In addition to this, since during the rotation breaking the circuits of winding, which have inductance, occurs, a principally unavoidable drawback in this collector sparking is. In connection with the indicated, important technical task the search for the construction of generators and direct-current motors, which do not have collector system, appears. However, such devices created were not during entire history of the development of electrical engineering. In this article this problem is solved. In it are examined two versions of the direct-current generators, in which there is no collector. The stated goal is achieved with the aid of the special constructions of the revolving magnets and by the corresponding arrangement of windings. If necessary such generators can be used as the engines.