Electromagnetic Compatibility

- Jan 14, 2019-

Electromagnetic compatibility refers to the ability of electronic equipment to work in a coordinated and effective manner in a variety of electromagnetic environments.

The aim is to enable electronic equipment not only to suppress all kinds of external interference, so that electronic equipment can work properly in a specific electromagnetic environment, but also to reduce the electronic equipment itself on other electronic equipment electromagnetic interference.

1. Choose a reasonable wire width because the impact interference caused by the transient current on the PCB circuit board printed lines is mainly due to the inductive components of the printed wire, so the inductance of the printed wire should be minimized.

2. The use of the correct wiring strategy to use an equal line can reduce the wire inductance, but the wire between the mutual inductance and distribution capacitance increase, if the layout allows, it is best to use the well glyph mesh wiring structure, the specific approach is a side of the printed board horizontal wiring, the other side of the longitudinal wiring, and then at the intersection with metallized holes connected.

3. In order to suppress the PCB circuit board wire crosstalk, in the design of wiring should try to avoid long distance equal line, as far as possible to open the distance between the line and line, signal line and ground line and power cord as far as possible do not cross. The setting of a grounded printed line between some signal lines that are very sensitive to interference can effectively suppress crosstalk.