Converter for light sources

A method for bringing the current flows at the output of an LCC resonance circuit into symmetry, at the secondary side of which, light sources can be powered, the method comprising the steps of:

• using a control circuit (SE) to activates two switches (S1, S2) of a half bridge circuit (HB), connected in series;
• powering a resonance circuit (RK) from a central point between the two switches (S1, S2) of the half bridge circuit (HB);
• starting from an output of the resonance circuit (RK), supplying an AC voltage to a transformer (T1), on the secondary side of which a separate current path (SP1, SP2) is provided for each of the two polarities of the AC voltage;
• using a detection circuit (ES) to detects at least one signal signal (V1, V2) representing the current (ISP1, ISP2) of the two separate current paths (SP1, SP2) and/or the ratio thereof;
• and
• using the control circuit (SE) to adjust the timing of the two switches (S1, S2) of the half bridge circuit (HB) as a function of the at least one signal (V1, V2) detected by the detection circuit (ES).