Patent ID: 7839015

Claim:
A circuit arrangement having a first power supply unit, a rectifier supplying a DC voltage for said power supply unit, a mains terminal, a mains switch having a first switching contact, arranged between the mains terminal and the rectifier, or arranged for turning off a supply or control voltage of a driver stage of the first power supply unit, a switching element with a control terminal, to which a control voltage is coupled, the switching element being coupled in parallel with said first switching contact of the mains switch for providing a current path bridging said first switching contact, a controller, which is supplied with an operating voltage by the first power supply unit, and which is coupled to said control terminal for control of the switching element, and a load coupled to said control terminal of the switching element for switching the load off substantially simultaneously when opening the switching element via the control voltage by means of the controller, and wherein the load is switched off and the switching element is opened in a delayed manner, when the circuit arrangement is switched off by means of the main switch.