Patent ID: 7248485

Claim:
Circuit arrangement having a mains connection, a mains switch comprising two switching contacts, a switching element, and a switched-mode power supply, which has a transformer with a primary winding, a rectifier means providing a rectified voltage for said primary winding, an energy-storage capacitor coupled with a terminal to said rectifier means and said primary winding, a switching transistor coupled to said primary winding, a driver circuit for producing a control voltage for said switching transistor, and a power factor coil for power factor correction coupled between said mains connection and said energy-storage capacitor, wherein a first of said switching contacts is arranged between said mains connection and said rectifier means, the second of said switching contacts is coupled to a supply or control voltage for said driver circuit in order to switch off said control voltage for said switching transistor, and a switching contact of said switching element is arranged in parallel with said first switching contact of said mains switch for maintaining a current after said circuit arrangement is switched off by means of said mains switch.