14

Dielectric Materials

OBJECTIVES

In this chapter you will learn about:

  • Electric fields, capacitance, and permittivity
  • Dielectric materials most commonly used
  • Properties of dielectric materials
  • Shortcomings of dielectric materials
  • Series and parallel representation of dielectric losses
  • Loss angle and its significance
Equation

Twin shielded cable

14.1  INTRODUCTION

A capacitor consists basically of two metal plates separated by a dielectric, such as air, paper, ceramic, aluminium oxide, tantalum oxide, Teflon, and other insulating materials that have controlled impurities. The size of a capacitor is dependent on the area of the metal plates, the ...

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