Working principle diagram of a household switching power supply

This is a diagram of the working principle of a household switching power supply. From the AC power grid input to the DC output, the input filter: its function is to filter the clutter existing in the power grid, and at the same time prevent the clutter generated by the machine from being fed back to the Public power grid. Rectification and filtering: directly rectify the grid AC power into smoother DC power for next-level transformation.