Electromagnetics might seem like black magic when working with Printed Circuit Boards (PCBs) and for a good reason, as it is literally action at distance! But knowledge is power and even though we can't see electromagnetics, we can certainly predict them. So, with this video I'm starting the series of videos dedicated to Electromagnetic Compatibility (EMC) on PCBs. Here, I introduce fundamental concepts and show the most common sources of EMI on circuit boards.
In this video, mathematical concepts are simplified and are not explained in detail. I recommend to watch my "Why Do Antennas Radiate?" videos to get a better idea of Maxwell's equations and their derivations:
• Why do antennas radiat...
Other useful links:
Visualising PCB Currents Flow:
hackaday.com/2019/05/29/visua...
Resistive vs Reactive Return Current Paths:
www.emcs.org/acstrial/newslet...
Microstrip vs Stripline:
www.vse.com/blog/2021/06/17/m...
Understanding Impedance Matching:
circuitdigest.com/article/und...
RF Near and Far Fields:
incompliancemag.com/article/n...
TIMELINE:
00:00 - Intro
00:49 - What Is EMC
01:37 - Energy Flow on a PCB
03:19 - EMI Sources on a PCB
04:46 - Power Supply
05:34 - DC-DC Converter
06:52 - Importance of Power Planes
08:04 - Clock Traces
08:47 - Microstrip vs Stripline
09:44 - PCB Antennas
10:33 - Impedance Matching
11:40 - Summary
Please visit my personal blog for more info:
www.eemadeinsiberia.com/
29 июн 2024
