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The Technician's EMI Handbook by Joseph Carr

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Chapter 2

Electrical and Electromagnetic Fundamentals

In this chapter the fundamentals of electricity and electrical circuits are presented. For most readers this material is a review of the basics. Those who no longer need instruction on the elementary level are invited to jump ahead to the material that follows. But for others, here is an overview of electrical phenomena that form the basis for EMI/EMC problems.

WHAT IS ELECTRICITY?

We might be tempted at this point to ask, “What is electricity?” No one really knows what electricity is, but we know a great deal about how it behaves. We can observe electricity in action, and we have learned how to control it. Modern technology exists because we know how to control and exploit electricity. ...

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