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A circuit arrangement for supplying a load which comprises a discharge lamp. The circuit includes apparatus for generating a DC voltage and provided with input terminals for connection to a supply voltage source. A rectifier is coupled to the input terminals for rectifying an AC voltage supplied by

A circuit arrangement for supplying a load which comprises a discharge lamp. The circuit includes apparatus for generating a DC voltage and provided with input terminals for connection to a supply voltage source. A rectifier is coupled to the input terminals for rectifying an AC voltage supplied by the supply voltage source. In addition, there are output terminals for connection to the load and a DC-DC converter connected between the rectifier and the output terminals and provided with a first inductor, a first unidirectional element, and a switching element. The output terminals are interconnected by a circuit branch which comprises a series arrangement of an impedance and a first capacitor, which impedance is shunted by a further unidirectional element. As a result, the inrush current which flows immediately after switching-on of the circuit arrangement is limited.

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[ What is claimed is:] [1.]1. A circuit arrangement for supplying a load comprising a discharge lamp from an AC supply voltage source at a high power factor, comprising means for generating a DC voltage provided withinput terminals for connection to an AC supply voltage source,rectifying means coupl

[ What is claimed is:] [1.]1. A circuit arrangement for supplying a load comprising a discharge lamp from an AC supply voltage source at a high power factor, comprising means for generating a DC voltage provided withinput terminals for connection to an AC supply voltage source,rectifying means coupled to the input terminals for rectifying an AC voltage supplied by the AC supply voltage source,output terminals for connection to the load,a DC-DC converter connected between the rectifying means and the output terminals and provided with first inductive means, a first unidirectional element and a switching element, and racterized in that the output terminals are interconnected by a circuit branch which comprises a series arrangement of an impedance and first capacitive means, which impedance is shunted by a further unidirectional element,whereby the current taken up from the AC supply voltage source is approximately sinusoidal in shape and approximately in phase with the AC voltage.