| 1. | The internal resistance of an ideal current source is infinite.
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| 2. | Current generators are modelled as an ideal current source in parallel with a resistor.
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| 3. | For an ideal current source, this means replace the current source with an open circuit.
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| 4. | A resistive circuit is a circuit containing only resistors, ideal current sources, and ideal voltage sources.
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| 5. | One notes that now each problem is relatively simple, since it involves only one single ideal current source.
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| 6. | For example, consider an inductor in series with an ideal current source & mdash; a physically impossible configuration.
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| 7. | In practice the ideal current source is replaced by a current mirror, which is less ideal in two ways.
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| 8. | If I were doing this " professionally ", I would do what someone suggested above : Consider operating a ideal current source ".
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| 9. | :: For ideal current sources in series, there would have to be two different currents in the same wire, which is impossible.
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| 10. | Thus, an ideal current source, if such a thing existed in reality, could supply unlimited power and so would represent an unlimited source of energy.
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