| 摘要 |
<p>The invention relates to a continuously controllable voltage source intended to supply test-specific arrangements in electrical engineering laboratories. According to the invention, the controllable source consists of a single-phase magnetic core (1) with columns, where, on one column there is placed a primary winding (2) divided into two identical immobile serially connected sections (2' and 2'') located at the ends of the column with a certain gap therebetween, on the same column there being also placed a short-circuit secondary winding (3), mobile on the entire length of the column and occupying, at the extremities thereof, a position concentric with the immobile sections (2' and 2'') of the primary winding (2), while on the other column there are placed another primary winding (4) divided into two identical sections (4' and 4'') as well, which are similarly made and placed in identical positions as the sections (2' and 2'') of the first column, used for the compensation of the residual voltage corresponding to the zero position, and another short-circuit secondary winding (5) placed in a fixed position, concentric with the section (4'').</p> |
