SCHALTUNGSANORDNUNG ZUM SCHALTEN UND STELLEN VON GLEICHSPANNUNG

摘要

The circuit arrangement is intended for various types of loads. A controllable semiconductor valve (T1) is arranged as the main valve between a load (6) and a DC voltage source (1). A turn-off device having a turn-off capacitor (C) is provided for the controllable main valve, and a controllable freewheeling valve (T2) is allocated to the load. A controllable auxiliary valve (T3) is arranged in series with, and rectified by, the controllable main valve (T1), and a freewheeling auxiliary valve (D1) is arranged in series with the controllable freewheeling valve (T2), and rectified by it. The turn-off capacitor (C) is connected between the junction points of the controllable auxiliary valve (T3) and the controllable main valve (T1) on the one hand and between the controllable freewheeling valve (T2) and the freewheeling auxiliary valve (D1) on the other hand, it being possible to turn the controllable freewheeling valve (T2) off by means of the turn-off device which belongs to the controllable main valve.