Abstract: In a circuit for the operating of gas discharge lamps in which a starting circuit (2, 17) having a starter transformer (17) and a source of auxiliary voltage which can be disconnected after starting has been effected are provided for the starting of the lamp, there is provided a full-wave rectifier (6) with which a charging capacitor (10) and a voltage-dependent electronic switch element (8) are connected in parallel. A switch contact (9) which is in series with the charging capacitor (10) can be actuated by the switch element (8). The charging capacitor (10) which supplies the operating voltage for the gas discharge lamp (3) can be charged to a voltage which can be selected by means of the switch element (8). The full-wave rectifier (6) which serves a source of auxiliary voltage can be disconnected by means of a control element (4) from the gas discharge lamp (3) after the latter has been started.