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Old 05-09-2008, 02:59 AM
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lectures Voltage and Current Sources

Voltage and Current Sources
Real voltage sources can be represented as ideal voltage sources in series with a resistance r, the ideal voltage source having zero resistance. Real current sources can be represented as ideal current sources in parallel with a resistance r, the ideal current source having infinite resistance.

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Such ideal voltage and current sources are used in modeling real circuits with Thevenin's theorem and Norton's theorem.
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