The invention relates to a method for operating a frequency converter circuit comprising at least two outputs that are respectively connected to a load, especially an induction coil (I1, I2). A first output (I1) is operated at a first switching frequency (f1) and a second output (12) is simultaneously operated at a second switching frequency (f2) that is different from the first, in such a way that noise having a frequency (fS) generated by the superposition of the first switching frequency (f1) and the second switching frequency (f2) is produced. The frequency converter circuit is operated in such a way that the frequency (fS) of the noise is lower than a first cutoff frequency (gl) and/or is higher than a second cutoff frequency (g2).