Abstract: In order to supply power to a radiant heating element, which is connected at a first connection, via a triac, to a first terminal of a supply voltage source and at a second connection, with a relay, to a second terminal of the supply voltage source, wherein an interference suppression capacitor is connected in parallel with the series circuit by the triac and the radiant heating element and a feedback circuit is connected between the triac and the radiant heating element, after disconnection of the radiant heating element from the second terminal, the interference suppression capacitor is now only connected to the second terminal via the feedback circuit.