1 provides space for transformer winding copper wire
2 fixed transformer core.
3 provided the backbone trunking path line transformer winding to produce.
4 pin is a metal skeleton transformer winding copper pillars; after solder connected with the PCB board, play a role in conducting the work of the transformer.
5 Retaining skeleton at the bottom of the PCB transformer can produce a fixed effect; generated when the solder tin pile the PCB, the PCB and the core to provide a certain distance space; isolated core and the tin heap to avoid bad pressure.
6 skeleton bumps, pits or chamfer, may decide to place the pin direction or order of transformers.