An electric coil apparatus has at least two subcoils from a superordinate doubly connected tape conductor. The coil apparatus has at least two conductor branches, each of the subcoils being wound from one of these conductor branches respectively. The conductor branches of the superordinate tape conductor have a superordinate first surface and a superordinate second surface facing away from this first surface. In a first subcoil, the first surface of the tape conductor faces a centerpoint of the first subcoil, and in a second subcoil, the second surface of the tape conductor faces a centerpoint of the second subcoil. Furthermore, in a manufacturing method of such a coil apparatus the two conductor branches are routed parallel to each other so as to dorm the subcoils.