First, the concept of PCB board copy board

The PCB board copying process refers to the process of obtaining the schematic diagram and the board diagram (PCB diagram) according to the original PCB board. Its purpose is to carry out later development. Post-development includes installation of components, deep testing, and modification of circuits. Because it is not related to the category of PCB board copyboard, it will not be described in detail.

Second, the process of PCB board copy board

1. Remove the device from the original board.

2. Scan the original board to get a graphic file.

3. Grind the surface layer to obtain the intermediate layer.

4. Scan the middle layer to get the graphic file.

5. Repeat steps 2-4 until all layers have been processed.

6, using special software to convert the graphic file into an electrical relationship file --- PCB diagram. If you have the right software, the designer just has to trace the graphics.

7. Check the check and complete the design.

Third, the PCB board copy board skills

PCB board copying, especially multi-layer PCB board copying, is a time-consuming and laborious task, which involves a lot of repetitive work. Designers must have enough patience and care, otherwise it is very easy to make mistakes. The key to making a copy board PCB design is to use the appropriate software instead of manual repetitive work, which is time-saving and accurate.

1. The scanner must be used during the copying process.

Many designers are accustomed to drawing lines directly on PCB design systems such as PROTEL, PADSOR or CAD. This habit is very bad. The scanned graphic file is the basis for conversion to a PCB file and the basis for later inspection. The use of scanners can greatly reduce the difficulty and intensity of labor. It is no exaggeration to say that if you can make full use of the scanner, even if you have no design experience, you can complete the PCB board copying work.

2. Single direction grinding plate.

In order to pursue speed, some designers choose a two-way grinding plate (that is, grinding the plate layer from the front and rear surfaces to the middle layer). In fact, this is very wrong. Because the two-way grinding plate is very easy to wear through, causing damage to other layers, the results can be imagined. The outer layer of the PCB is the hardest due to the process and the presence of copper foil, pads, etc., and the middle layer is the softest. So to the middle layer, the problem is more serious and often cannot be polished. In addition, the PCB material, hardness and elasticity produced by various manufacturers are not the same, and it is difficult to accurately remove them.

3. Choose excellent conversion software.

Converting scanned graphics files to PCB files is the key to the entire work. Have a good conversion file. Designers only need to "paint the tiger" and draw the graphics to complete the work. The EDA2000 is recommended here, which is really convenient.