Electrical Technology, Volume 1

22

Resonance

OBJECTIVES

In this chapter you will learn about:

• The definition of resonance as it applies to any a.c. circuit with only one source
• The properties of series resonant circuits
• The quality (magnification) factor Q, and its interpretation as the voltage magnification factor
• The degree of selectivity
• Bandwidth and its relation to Q
• The properties of parallel resonant circuits
• Impedance, current and voltage relations in series and parallel resonant circuits
• Power factor of resonant circuits

Reactance Sketches

22.1  INTRODUCTION

In Chapter 20 of this book, titled ‘Power Factor Correction’ we corrected for a low power factor in a ...