It is especially important that the electronic model of the electronic device and the frequency of the processor remain in normal operation. The electronic system is a part of a complex component. If radiation and electromagnetic interference may cause problems in the normal operation of the board, Effectively avoiding electromagnetic interference can make the mechanical components such as PCB multi layer circuit board run correctly and improve the anti-interference ability of the system.The following is a method for avoiding electromagnetic interference by PCB multiplayer board for LHD PCB.

1. Control the interference source.
If the PCB multiplayer circuit board wants better anti-interference in practical applications, it can use low-value conductors to reduce the signal problem of the pole and signal layer. In addition, the signal line is placed in the same PCB layer. The power supply layer is as close as possible to the ground plane. Only in this way can the possible electromagnetic interference factors be avoided as much as possible, so that the PCB multiplayer circuit board exhibits better anti-interference effects.

2. pay attention to the layout of the parts
Nowadays, the experienced PCB multi-layer circuit board manufacturer will process the parts in the actual design, and separate the strong and weak electrical signals, the digital and analog signal lines in the process of part layout and the circuits in each circuit. The filter network is connected nearby, which can improve the anti-interference ability of the PCB multiplayer circuit board.

3.optimization of wiring
The use of unreasonable wiring of the PCB multiplayer circuit board may cause interference between the signal lines. Therefore, when the wiring of the PCB multiplayer circuit board is as wide as possible, the loop resistance can be reduced and the signal line shortened. The number of via should be as wide as possible when wiring, so that the wiring can meet the requirements for construction.

The above is the basic method of resisting electromagnetic interference of PCB multiplayer circuit board.