It is especially important that the electronic model of the electronic device and the frequency of the processor remain in normal operation, and 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 multilayer circuit board run correctly and improve the anti-interference ability of the system. The following are some of the anti-electromagnetic interference methods for pcb multilayer circuit boards.
1. Control the interference source
If the pcb multilayer circuit board wants better anti-interference in practical applications, it can use low-value inductors 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 multilayer circuit board exhibits better anti-interference effects.
2, pay attention to the layout of the parts
In the actual design, the parts are processed in blocks. During the process of part layout, the strong and weak electrical signals are separated, the digital and analog signal lines are separated, and the filter network of each circuit is connected nearby, so that the pcb multilayer can be improved. The anti-interference ability of the circuit board.
3, optimization of wiring
The use of unreasonable wiring of the pcb multilayer circuit board may cause interference between the signal lines. Therefore, when the wiring of the pcb multilayer circuit board is as wide as possible, the loop resistance can be reduced and the signal line shortened. The number of vias should be as wide as possible when wiring, so that the wiring can meet the requirements for construction.
These are the basic methods for resisting electromagnetic interference of pcb multi-layer circuit boards, and consumers can choose pcb multi-layer circuit boards produced by big brands, from product design to anti-electromagnetic interference, etc., all have unique achievements, so buy such a The product can avoid the problems caused by dry electronic interference as much as possible. Ensuring that consumers can purchase such pcb multi-layer circuit boards can adapt to any use requirements, and can also make pcb multi-layer circuit boards show good control effects in more fields