Voltage supply systems for supplying control devices for an aircraft are made to be multiply redundant so that the failure of individual operative parts of the voltage supply system does not result in a total failure of the voltage supply and therefore of the control device. The invention addresses the problem of providing a voltage supply device, particularly for an aircraft control device, which functions in an operationally-reliable manner with a manageable number of components. According to the invention, a voltage supply device (4) is proposed which has a first and a second main channel arrangement (6a, b), said voltage supply device (4) comprising a first and a second output transformer (17a, b), a first output inductor (15a) of said first main channel arrangement taking the form of a primary winding (16a) of the first output transformer (17a), and the second output inductor (15b) of the second main channel arrangement (6b) taking the form of a primary winding (16b) of the second output transformer (17b), said voltage supply device (4) having at least one first auxiliary channel arrangement (18a) that comprises a first auxiliary voltage output N1, a first secondary winding (19a) of said first output transformer (17a), and a first secondary winding (19b) of said second output transformer (17b), the first auxiliary voltage output N1 being connected to said first secondary windings (19a, b) which are connected in parallel.