电路板设计（Circuit board design）.doc

电路板设计（Circuit board design） Edit this paragraph The circuit boards are mainly composed of welded plates, holes, installation holes, wires, components, plugs, filling, and electrical boundary circuit boards The main functions of the components are as follows: welding disks: metal holes used to weld the components of the components. Through hole: metal through hole and non-metal through hole, where metal through hole is used to connect the components between each layer. Installation hole: used for fixed circuit boards. Conductor: electrical network copper film used to connect the pin of the components. Connectors: components used for wiring between circuit boards. Fill: the copper applied to the ground wire network can effectively reduce the impedance. Electrical boundaries: used to determine the size of the circuit board, and no components on the circuit board can exceed the boundary. Circuit board www_kspcbsmt_com production Edit the main categories of this paragraph The circuit board system is divided into three types: circuit boards Single panel single-sided Boards we just mentioned, on the most basic PCB, the parts are concentrated on one side and the wire on the other side. Because the wire only appears on one side, we call this PCB Single - sided. Because single panel in the design of lines, there are many restrictions (because only one side, wiring between cannot pay * and must be around the path alone), so only use this kind of early circuit board. Double-sided Boards Double Sided Boards with wiring on both sides of the circuit board. But to use the two sides of the wire, you must have an appropriate circuit connection between the two sides. The bridge between these circuits is called the guide hole (via). A guide hole is a small hole in a PCB that is filled or coated with metal. It can be connected to two surfaces of a wire. Because the area of the double panel is twice as large as that of a single panel, and because the wiring can be interlaced with each ot