10 Questions of Redesign PCB Board Layout Drawing

Hereby we would like to introduce 10 Questions of Redesign PCB Board Layout Drawing which will give the electronic circuit board have better performance and greater stability:

1. When making PCB boards, in order to reduce interference, should the ground wire form a closed sum form?

2. If the emulator uses one power supply and the pcb board uses one power supply, should the grounds of the two power supplies be connected together?

3. Is “the protection of the organization” the protection of the chassis?

4. Do I need to consider the esd problem of the chip itself when selecting a chip?

5. A circuitry system consists of several PCB boards, should they share the same ground?

6. How to avoid crosstalk in PCB board redesign?

7. How to check whether the PCB meets the reverse engineering design process requirements before leaving the factory?

8. Cloning a handheld PCB board design with LCD and metal shell. When testing ESD, it cannot pass the test of ICE-1000-4-2, CONTACT can only pass 1100V, and AIR can pass 6000V. In the ESD coupling test, it can only pass 3000V horizontally and 4000V vertically. The CPU frequency is 33MHZ. Is there any way to pass the ESD test?

9. When cloning a PCB system with DSP and PLD, which aspects should be considered for ESD? 10. On a 12-layer PCb board, there are three power layers 2.2v, 3.3v, and 5v. The three power supplies are made on one layer. How to deal with the ground wire?