The Unisource PS305DU Dual Output DC Power Supply, 30V/5A consists of two identical, independently adjustable and one fixed 5V/3A DC power supplies. This model offers three selectable modes of operation: independent, series, and parallel. In the independent mode, the output voltage and of each supply are controlled separately, and each supply is isolated up to 300V from output to chassis or output to output. In tracking mode, both outputs are automatically connected in series or parallel, and the controls of the left supply adjust the magnitudes of both the positive and negative output voltages. The PS-305DU includes indicators for constant voltage, constant current, and overload operation.