Network filter winding production preparation process

The invention relates to a network filter winding production preparation process. A first wire, a second wire, a third wire and a fourth wire are wound around a transformer magnetic ring of a networkfilter in parallel; the second wire head and the first wire tail are twisted together to be used as the middle axis of the primary end, and after short circuiting, the first wire head and the second wire tail form a loop on the primary side of the transformer; the tail parts of the fourth wire head and the third wire tail are twisted together to be used as the middle axis of the secondary edge, and after short circuiting, the third wire head and the fourth wire tail form a loop on the secondary edge; and multiple winding layers are provided, and each winding layer is provided with an insulating layer. In the process, the fourth wire head and the third wire tail are directly wound around a common-mode ring magnetics ring, so that material cost of additional single wire of the traditional coil is saved; the fourth w