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Electrical Technology, Volume 1 by S. P. Bali

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30

Coupled Circuits

OBJECTIVES

In this chapter you will learn about:

  • The need for coupling
  • Classification of coupled circuits
  • Performing calculations based on M = k√L1L2
  • Response of different types of coupled circuits
  • The effect of variations of coupling elements
  • Mutual coupling
  • Reflected impedance and its importance
Equation

Transfer of energy through magnetic couplings: (loose, critical and tight coupling)

30.1  INTRODUCTION

When the interaction between two loops of a circuit takes place through a magnetic field instead of through common elements, the loops are said to be inductively or magnetically coupled. The windings of a transformer, for example, ...

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