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7

Power and Energy in Periodic Waveforms

CHAPTER OBJECTIVES

 

  • To explain the need for sinusoidal waveforms and the importance of sinusoidal analysis.

  • To explain the concepts of phase, phase difference, phase lag/lead, phase delay/advance, time delay/advance etc., in the context of sinusoidal waveforms.

  • To introduce instantaneous power, cyclic average power and average power in periodic waveforms.

  • To define effective value of periodic waveforms and illustrate rms calculations with examples.

  • To develop and explain the power superposition principle and to emphasise the pitfalls in applying this principle.

  • To develop an expression for effective value of composite periodic waveform and point out pitfalls in applying the result.

This ...

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