Reverse protection diode

When operating multiple power devices in parallel, if the output of each power supply becomes unbalanced, reverse voltage will be applied from the higher-output power supply to the lower-output one. Therefore, a diode is connected in series with each power supply to prevent reverse voltage. A reverse protection diode is inserted so that it becomes forward-biased with respect to the supply voltage of each power source. When the output of each power device is balanced, current flows in the forward direction, but when the outputs are unbalanced and reverse voltage occurs, it prevents current from flowing in the reverse direction and protects the power devices.