Electric Circuits 8th Edition 118

Electric Circuits 8th Edition 118 - 94 ofC A Techniques...

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94 Techniques of Cncuit Anatysis 4.1 Ternninology To discuss the more involved methods of circuit analysis, we must define a few basic terms. So far. all the circuits presented have been planar circuits-that is, those circuits that can be drawn on a plane with no oossing branches. A circuit that is drawn witb crossing branches still is considered planar if it can be redrawn with no crossover branches. For example, the circuit shown in Fig. 4.1(a) can be redrawn as Fig 41(b); the circuits are equivalent because all the node connections have been maintained. Therefore, Fig.4.1(a) is a plarar circuit because it can be redmwn as one. Figure 4.2 shows a nonplanar circuit-it cannot be redra$n in such a way that all the node connections are maintained and no branches overlap.
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