CIRCUIT DE COMMANDE D'ÉLÉMENT LUMINESCENT COMPORTANT UN CONVERTISSEUR CADENCÉ POUR LE RÉGLAGE NUMÉRIQUE D'UNE TEMPÉRATURE DE COULEUR ET/OU D'UN NIVEAU DE VARIATION D'INTENSITÉ LUMINEUSE

摘要

The invention relates to an operating circuit having at least one LED channel for supplying at least one LED range comprising at least one LED, wherein the operating circuit can be fed with an electrical supply on at least one connection on the inlet side, and the operating circuit has at least one first switch, clocked by a control unit, of the converter, preferably a buck converter, from which the at least one LED section can be supplied electrically, wherein the control unit is configured to determine a first electric parameter reproducing the anode voltage of the at least one LED range on a voltage divider of the operating circuit and, by means of a filter circuit of the operating circuit, to determine a second electric parameter reproducing the cathode voltage.