EEE :: Circuit Theorems in AC Analysis
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One circuit is equivalent to another, in the context of Thevenin's theorem, when the circuits produce the same voltage.
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Norton's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent voltage source in series with an equivalent impedance.
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A Thevenin ac equivalent circuit always consists of an equivalent ac voltage source and an equivalent capacitance.
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An equivalent circuit is one that produces the same voltage and current to a given load as the original circuit that it replaces.
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In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.
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In order to get maximum power transfer from a capacitive source, the load must have an impedance that is the complex conjugate of the source impedance.
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Thevenin's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent current source in parallel with an equivalent impedance.
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Like Thevenin's theorem, Norton's theorem provides a method of reducing a more complex circuit to a simpler, more manageable form for analysis.
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