Mastering EMC One Level at a Time

LEVEL 2

This page is scheduled to be completed in August 2026.  

These topics are worth reviewing if they were not part of your university education or if you are not completely comfortable with them. Once you've mastered these essential engineering fundamentals, you're ready to move to the next level.

EMC Standards
and Software

EMC Question
of the Week

The figure below shows the harmonics of a 1-Vpp 10-MHz trapezoidal waveform with 0.5-ns and 5-ns transition times. With a 5-ns transition time, there is a clear (sin x)/x shape with nulls at multiples of 200 MHz. The location of these nulls is determined by the

  1. transition time
  2. duty cycle
  3. fundamental frequency
  4. rounding error

Answer to this week's question

Answer to last week's question

Plot of the harmonics of a 10-MHz trapezoidal waveform with 0.5-nsec and 5-nsec transition times