The PCB board process can be roughly divided into the following two steps. Each process needs to be processed and produced in various processes. It should be noted that the processes of the boards of different structures are different. The following processes are the complete production process of multi -layer PCB process;

　　1. Inner layer; mainly to make the inner line of the PCB circuit board; the production process is:

　　1. Course: Cut the PCB substrate into production size;

　　2. Previous treatment: Clean the surface of the PCB substrate to remove surface pollutants

　　3, film compression: Paste the dry membrane on the surface of the PCB substrate to prepare for subsequent images;

　　4. Exposure: Use the exposure device to use UV light to expose the obtsession substrate, so as to transfer the image of the substrate to the dry membrane;

　　5. DE: The substrate will be exposed after exposure, which is displayed, etched, and removed, and the production of the inner plate will be completed

　　2. Internal inspection; mainly to detect and repair board lines;

　　1. AOI: AOI optical scanning, compares the image of the PCB board with the data of the good product that has been entered, so that the gaps and depression on the board image can be found;

　　2. VRS: The bad image data detected by AOI to VRS is passed to VRS, and relevant personnel are repaired.

　　3. Make up: welding the golden line on the gap or depression to prevent poor electrical;

　　CAD drawing PCB board circuit graph steps

　　A small circuit is of great significance. What is a circuit diagram? The designer of Dongguan Boyuan Electronics Co., Ltd. said that the circuit diagram was a circuit connection layout diagram of the component component composition and the relationship between them and the relationship between them from the needs of research or engineering planning.

　　PCB diagram

　　However, the steps of CAD drawing PCB board circuit diagram are not complicated? The four major components of the circuit diagram of Boyuan Electronics are component symbols, connectivity, nodes, and annotations. The component symbol represents real circuit components, including resistors, capacitors, inductor coils, transistors, etc. Although graphics are not necessarily similar to actual components, they can generally highlight the characteristics of the component; Connected between several components or several wires.

　　The steps about the CAD PCB board circuit diagram include which are also the question of many new learners' associations. Below is the Boyuan Electronic designer to talk one by one.

　　In order to connect the convenient connection of the circuit system, the first thing is to learn the characteristics of the circuit. That is, based on this purpose, we must know the main use of the circuit diagram very clearly. Understand the principle of the role of the composition circuit, circuit equipment or circuit device; it provides a reference information for the failure of the test and finding the failure in the circuit system; and this will also be used as the basis for drawing the wiring diagram.

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