Voltage converter (1a..1g) for converting an input voltage (U E) into an output direct voltage (U A), comprising: a transformer with at least one primary winding (WP1, WP2) and at least two secondary partial windings (WS1, WS2), means for generating an alternating voltage in the primary winding (WP1, WP2) from the input alternating voltage (U E), wherein the alternating voltage in the primary winding (WP1, WP2) has a higher frequency than the input alternating voltage (U E), characterised by a first secondary full-bridge rectifier with a first input terminal being connected to a first terminal of a first secondary partial winding of the transformer and with a second input terminal being connected to a first terminal of a second secondary partial winding of the transformer, wherein said first secondary full-bridge rectifier, on its output side, is intended for providing the output direct voltage (U A), a first secondary capacitor which is arranged between second terminals of each of the first and second secondary partial windings (WS1, WS2), so that a series connection consisting of the secondary partial windings (WS1, WS2) and the first secondary capacitor is connected to the input of the first secondary full-bridge rectifier, and a second secondary full-bridge rectifier arranged in parallel to the first secondary full-bridge rectifier, wherein the input of the second secondary full-bridge rectifier has the first secondary capacitor and the second terminals of each secondary partial winding (WS1, WS2) connected to it and wherein the output thereof is connected in a homopolar manner to the output of the first secondary full-bridge rectifier. a transformer with at least one primary winding (WP1, WP2) and at least two secondary partial windings (WS1, WS2), means for generating an alternating voltage in the primary winding (WP1, WP2) from the input alternating voltage (U E), wherein the alternating voltage in the primary winding (WP1, WP2) has a higher frequency than the input alternating voltage (U E), a first secondary full-bridge rectifier with a first input terminal being connected to a first terminal of a first secondary partial winding of the transformer and with a second input terminal being connected to a first terminal of a second secondary partial winding of the transformer, wherein said first secondary full-bridge rectifier, on its output side, is intended for providing the output direct voltage (U A), a first secondary capacitor which is arranged between second terminals of each of the first and second secondary partial windings (WS1, WS2), so that a series connection consisting of the secondary partial windings (WS1, WS2) and the first secondary capacitor is connected to the input of the first secondary full-bridge rectifier, and a second secondary full-bridge rectifier arranged in parallel to the first secondary full-bridge rectifier, wherein the input of the second secondary full-bridge rectifier has the first secondary capacitor and the second terminals of each secondary partial winding (WS1, WS2) connected to it and wherein the output thereof is connected in a homopolar manner to the output of the first secondary full-bridge rectifier.