In a multi-layer PCB, what is the primary purpose of a 'power plane' and how does it contribute to signal integrity?
Question 2
When designing for high-frequency applications, why is it critical to consider the 'skin effect' in PCB traces, and how does it impact trace resistance?
Question 3
A PCB requires a high-current trace to connect a power supply to a load. If the trace width is doubled, what is the approximate impact on its resistance, assuming all other factors remain constant?
Question 4
In PCB design, what is the primary function of 'differential pairs' and what is the most critical routing guideline for them?
Question 5
When designing a PCB for a mixed-signal application (analog and digital), what is the most effective strategy to prevent digital switching noise from coupling into sensitive analog circuits?
