Switching power supply aging energy-saving circuit

Abstract

The utility model discloses a switching power supply aging energy-saving circuit, which relates to the field of power supply and comprises a switching power supply module used for supplying power to a DC / AC conversion module after a plurality of switching power supplies are connected in series; the indication follow current module is used for indicating the working state of each switching power supply and maintaining the other switching power supplies to be connected in series to be output by the DC / AC conversion module when the switching power supply fails; the DC / AC conversion module is used for converting the direct current into 220V alternating current and feeding back the 220V alternating current to the mains supply voltage; compared with the prior art, the beneficial effects of the utility model are that the DC / AC conversion module converts direct current into alternating current and feeds the alternating current back to the commercial power supply for secondary utilization, and the DC / AC conversion module converts the alternating current into direct current and feeds the alternating current back to the commercial power supply; multiple switching power supplies are connected in series for use, so that the output current of the multiple switching power supplies is in a full-load state, the energy consumption after the switching power supplies are aged is reduced, and the cost is saved.

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