| 摘要 |
An apparatus for controlling a series wound DC machines comprises an element (10) with a diode function connected in parallel with the field winding (6), a first switching element (2) connected between the field winding and one pole of the supplying DC source (U), as well as a second switching element (4) connected in parallel with the armature (8), the two switching elements being mutually connected via the element with a diode function. |
