Knowledge points: what are the know-how of PCB wiring?

PCB Board wiring , yes PCB An important step before making , Will directly affect the following PCB Processing quality of circuit board . that ,PCB What are the know-how of circuit board wiring ？

1、 Properly handle the power supply 、 The relationship between the ground wires
Power Supply 、 Interference caused by improper handling of ground wire , It will degrade the performance of the product ; So for the power supply 、 The wiring of ground wire should be taken seriously , Turn the power on 、 Noise interference from the ground wire is minimized , To guarantee the quality of the products .

2、 Internal processing of digital and analog common ground problems
The frequency of digital circuit is high , Analog circuits are very sensitive ; Must be in PCB Number of internal processes 、 The problem of modular commons , There is only one connection point between digital and analog .

3、 In the electricity （ The earth ） Wiring on layers
The power supply layer should be considered first , Next is the stratum .

4、 Large area conductors are connected by the legs of components
There are some hidden dangers in the welding assembly of components , It's easy to cause false solder joints . The solution is to make a cruciform pad , Commonly known as hot pad .

5、 Cabling is determined by the network system
There should be a reasonably dense grid system to support the wiring .

6、 The wiring design shall be carefully checked
Inspection contents include ： Line and line 、 Wire and component pads 、 Line and through hole 、 Element pad and through hole 、 Whether the distance between through holes is reasonable ？ Whether the width of power line and ground wire is appropriate ？ Whether the power supply and ground wire are tightly coupled ？ stay PCB Is there any place in the cable that can widen the ground wire .

The above is PCB Know how of board wiring , How much do you know ？ 
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