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Nature and origins of electomagnetic compatibility

Nature and origins of electomagnetic compatibility

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Electromagnetic interference (EMI) can be viewed as a kind of environmental pollution which can have consequences that are comparable to toxic chemical pollution, vehicle exhaust emissions or other discharges into the environment. The electromagnetic spectrum is a natural resource which has been progressively tapped by man over the last 100 years. Most of the development has taken place in the last 50 years with the advent of public service broad casting, point-to-point and mobile communica tions etc. which has brought great economic and social benefits. The spectrum is now almost full and it is proving difficult to satisfy the pressures for new uses of this resource. Modern life has come to depend heavily on systems that use the electromagnetic spectrum and its protection is in the interests of us all. For this reason unwarranted electromagnetic interference represents a real economic and social threat which can even result in injury or death.

Chapter Contents:

  • 1.1 Definitions of electromagnetic compatibility
  • 1.2 Visualising the EMI problem
  • 1.2.1 Sources of EMI
  • 1.2.2 EMI coupling to victim equipments
  • 1.2.3 Intersystem and intrasystem EMI
  • 1.3 Historical background
  • 1.3.1 Early EMC problems
  • 1.3.2 Early EMC problems with military equipment
  • 1.3.3 The cost of EMC
  • 1.3.4 Serious EMI problems
  • 1.4 Technical disciplines and knowledge areas within EMC
  • 1.4.1 Electrical engineering
  • 1.4.2 Physics
  • 1.4.3 Mathematical modelling
  • 1.4.4 Limited chemical knowledge
  • 1.4.5 Systems engineering
  • 1.4.6 Legal aspects of EMC
  • 1.4.7 Test laboratories
  • 1.4.8 Quality assurance: total quality management
  • 1.4.9 Practical Skills
  • 1.5 Philosophy of EMC
  • 1.6 References

Inspec keywords: environmental factors; electromagnetic compatibility; electromagnetic interference

Other keywords: electromagnetic interference; environmental pollution; electromagnetic compatibility; electromagnetic spectrum

Subjects: Electromagnetic compatibility and interference

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