Patent ID: 8129861
Filing Date: 2012-03-06
Classification: G05F,H02J

Abstract:
1. An electrical voltage supply comprising: at least two voltage sources for supplying an output connection; and a closed-loop control circuit to control an output voltage that is present at the output connection, the closed-loop control circuit including, for each voltage source, one actuating element that has a current path via which a connection of a respective one of the respective voltage sources is connectable to said output connection, wherein each actuating element has a respective actuating signal input for setting the electrical conductivity of a current path, wherein the closed-loop control circuit has a closed-loop controller to which the output voltage and a desired voltage signal are supplied, wherein the closed-loop controller interacts with the actuating signal inputs of the actuating elements in such a way that, when a deviation occurs between the output voltage and the desired voltage signal, the control of at least one actuating signal input is changed in order to reduce the deviation, wherein the actuating signal inputs are connected to a control device that is designed in such a way, that the current path of at least one actuating element is enabled for control by the closed-loop controller if an output current that is drawn at the output connection is present in a predetermined value range assigned to the respective actuating element, and wherein the current path is disabled if the output current that is drawn at the output connection does not lie in the predetermined value range.