source:Other information release time:2023-05-11 Hits: Popular:PCB Assembly company
When engineers cover copper, in order to allow copper cover to achieve the expected effect, the following aspects should be paid to:
1. If there are many land in PCB, there are SGND, Agnd, GND, etc., according to the different positions of the PCB board surface, the most important "ground" is used as the bench Separate the copper to cover the copper, and at the same time, before the copper covers, the corresponding power connection is first thickened: 5.0V, 3.3V, etc. In this way, a variety of multi -deformed structures of different shapes are formed.
2. For a single point connection at different places, the method is to connect through 0 Euro resistance or magnetic beads or inductance.
3. Copper cover near the crystal, the crystal in the circuit is a high -frequency transmission source. The method is to cover the copper around the crystal, and then the crystal shell is grounded separately.
4. If the island (dead area) problem, if it feels very large, it will not take much money to define a place to add the holes.
5. When starting the wiring, deal with the ground line with colleagues, and the ground line should be taken well when the line is on the line. It cannot be rely on copper to eliminate the connected feet by adding holes. This effect is very bad.
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