Resonance

OBJECTIVES
After studying this chapter, you will be able to
• determine the resonant frequency and bandwidth of a simple series or parallel circuit,
• determine the voltages, currents, and power of elements in a resonant circuit,
• sketch the impedance, current, and power response curves of a series resonant circuit,
• find the quality factor, Q, of a resonant circuit and use Q to determine the bandwidth for a given set of conditions,
• explain the dependence of bandwidth on the L/C ratio and on R for both a series and a parallel resonant circuit,
• design a resonant circuit for a given set of parameters,
• convert a series RL network into an equivalent parallel network for a given frequency.
KEY TERMS
Bandwidth
Damped Oscillations
Half-Power Frequencies
Quality Factor
Parallel Resonance
Selectivity Curve
Series Resonance
OUTLINE
Series Resonance
Quality Factor, Q
Impedance of a Series Resonant Circuit
Power, Bandwidth, and Selectivity of a Series Resonant Circuit
Series-to-Parallel RL and RC Conversion
Parallel Resonance
Circuit Analysis Using Computers