September 2008
Beginner
834 pages
37h 13m
English
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7.6 THE POWER SUPERPOSITION PRINCIPLE
Current variables and voltage variables in a linear electric circuit obey the Superposition Theorem. However, instantaneous power in a linear circuit does not follow superposition principle. Consider a circuit driven by two sources vS1(t) and vS2(t) and let the corresponding response components for the voltage across a particular element be v11(t) and v12(t). The corresponding response components of current through that element are i11(t) and i12(t) as per the passive sign convention. Then,
The instantaneous power delivered to the element when vS1(t) is acting alone, P1(t) = v11(t) ill(t)
The instantaneous power delivered to the element when vS2(t) is acting alone, P2(t) = v12(t) i12(t)
The instantaneous ...
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