1, PCB wire welding

　　This method does not require any connectors, as long as the external connection point on the PCB printed board is welded directly with the components or other components outside the board. For example, the speaker in the radio, the battery box, etc.

　　Circuit board interconnection welding should pay attention to:

　　(1) The welding pad of the welding wire should be as far as possible on the edge of the PCB printed board, and arranged according to a unified size to facilitate welding and maintenance.

　　(2) In order to improve the mechanical strength of the wire connection and avoid pulling the solder pad or printed wire off due to the pull of the wire, drill holes near the solder joints on the PCB printed board, let the wire pass through the hole from the welded surface of the printed board, and then insert the solder pad hole from the component surface for welding.

　　(3) Arrange or bundle the wire neatly, and fix it with the board through the wire card or other fasteners to avoid breaking the wire due to movement.

　　2, PCB wiring welding

　　The two PCB printed boards are connected by a line, which is reliable and not easy to make connection errors, and the relative position of the two PCB printed boards is not limited.

　　Printed boards are welded directly between each other. This method is often used for connections where the Angle between two printed boards is 90 degrees. After connecting to form an integral PCB printed board component.