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Electromagnetic Fundamentals

Electromagnetic Fundamentals

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That's right: if you've been testing and retesting at the EMC test facility, it's time to stop repeating the full test. Unless the problem is very simple, you are likely just wasting time and money. Instead of performing a full test, it might be time to look at a specific frequency or small frequency range, to focus on a specific test level, or to analyze just part of a circuit or filter. By treating your EMC test failure in a methodical and process-based manner, you'll be able to narrow down the root cause easier and quicker. Although the implementation of the fix or fixes may not be as easy, hopefully with the help of this book you will learn how to develop a range of potential solutions and to narrow down the probable causes for the test failure.

Chapter Contents:

  • 1.0 Stop Testing: Troubleshooting Is Different
  • 1.1 What Is an Electromagnetic Field?
  • 1.2 What Is a Decibel?
  • 1.3 EMI and EMC
  • 1.4 Types of Interference
  • 1.5 Differential-Mode and Common-Mode Currents
  • 1.6 Time Domain and Frequency Domain
  • 1.7 Relationship between Frequency, Wavelength, and Bandwidth
  • 1.7.1 Frequency and Wavelength
  • 1.7.2 Bandwidth
  • 1.7.3 Resolution Bandwidth and Video Bandwidth
  • 1.7.4 Filter Bandwidth
  • 1.7.5 Broadband and Narrowband
  • 1.8 Resistance, Capacitance, and Inductance (at High Frequency)
  • 1.8.1 Resistors
  • 1.8.2 Capacitors
  • 1.8.3 Inductors

Inspec keywords: electromagnetic compatibility

Other keywords: electromagnetic fundamental; EMC test facility; failure testing

Subjects: Electromagnetic compatibility and interference

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