How to connect the primary winding of a flexible transformer

摘要

The present invention is a flexible transformer formed by forming a secondary winding in a thin shape and then wound in a cylindrical shape and being concentrically stacked between a primary winding composed of an inner cylinder and an outer cylinder, the substrate forming the cylinder (SUBSTRATE). After depositing and forming the seed layer 51 of the conductor (Cu) on the insulating film by a sputtering method, the land 52 is formed by solder plating a predetermined thickness on the formed conductor seed layer, and in the cylindrical In order to cover the outer cylinder, a conductor wire for connecting the conductor wires of the inner and outer cylinders is formed by evaporation on the insulating paper cap made of a disc, and the solder plating is performed by protruding the connecting portions 62 and 63 of the conductor wires. After putting the cap on the cylinder and bending the protruding portion of the conductor wire of the cap, the land area of the cylinder is brought into contact with the protruding portion of the conductor wire of the cap. Connect by soldering to the box.