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Electric Circuits 8th Edition 51

Electric Circuits 8th Edition 51 - age this is an allowable...

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2.1 Voltage and CurentSources Tegting Interconnections of Ideat Independent and Dependent Sources Using the definitions of the ideal independent and depende0r sourcer. srale which iDterconneclrons in Fig. 2.4 are valid and which violate the consuamN imposed by the ideal sources. Solution Connection (a) is invalid. Both the independenr souce and t])e dependent souice supply voltage across the same pair of terminals, Iabeled a,b. This requircs that each source supply the same voltage with the same polaity.The independent source sup- plies 5 Y but the dependent souce supplies 15V Connectiotr (b) is valid. The independent volr- age source supplies voltage acioss the pair of termi- nals maiked a,b. The dependent current source supplies curent through the sarne pair of terminals. Because an ideal voltagesource supplies the same voltage regardless of cuirent, and an ideal currert source supplies the samecurent regardless of volt-
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Unformatted text preview: age, this is an allowable contrection. Connection (c) is valid. The independenr cur-rent source supplies crment tlrough the pait of ter-mhals marked a,b. The dependent voltage source supplies voltage aqoss the same pafu of terminals. Because an ideal cufient source supplies the same current regardless of voltage, and an ideal voltage source supplies the same voltage regaidless of cur-rcnt, this is an allowable connection. Connection (d) is invalid. Both the irdepend-ent source and the dependent source supply cunent through ttre same pair of terminals, labeled a,b. This requkes that each source supply the same curent in the same reference dircction. The independent souce supplies 2 A, but the dependent source sup-pfies 6 A iII the opposite direction. G) (d) Figure 2.4lr The circuitstor Examph 2.2. T\\ |),=3r,, b (.) +\ /,=3,, r) " ""(t b t) '.=4r. (b) T I i, b...
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• Spring '07
• Boser
• Voltage source, Ideal voltage source, dependent current source, souice supply voltage, ource supplies voltage

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