Led switching arrangement

Abstract

The invention relates to a switching arrangement for operating at least one LED, which switching arrangement is provided with: input terminals (1, 2) for connecting a supply source; output terminals (3, 4) for connecting the LED to be operated; a first series circuit (I) between one of the input terminals (1) and one of the output terminals (3), including at least a self-inductance (L), a capacitor (C) and a diode (D); a second series circuit (II) between the input terminals, including at least the self-inductance (L) and a switiching element (S) which is alternately switched to a conducting state and a non-conducting state at a high frequency; a third series circuit (III) between the output terminals, including the diode and an inductive winding (SW). According to the invention, the inductive winding forms a secondary winding of a transformer (T), which has a primary winding (PW) which forms part of both the first and the second series circuit.

Dependencies are inferred from the claim text.