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Unformatted text preview: THEVENIN EQUIVALENT Using Source Stransformations Assessment Prob. 4.18 Simpler method to find Rth If there are only independent sources in the circuit, deactivate them Then find total resistance looking into the network at designated terminal pair For deactivation, short the V sources and open the I sources Ω = + = = 8 25 20 5 4 x R R Th ab Another method to find Rth if there are dependent sources in the circuit • You cannot de ‐ activate dependent sources like you can with independent sources. • Hence you cannot do series parallel combination of resistors to find R eq (R th ) across terminals of interest. • So…another method to find Rth in such cases is to apply test voltage after de ‐ activating all INDependent sources Another method to find Rth if there are dependent sources in the circuit T T th i v R = Assessment Prob. 4.19...
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 Fall '06
 Kruempel
 Trigraph, rth, independent sources, Holden VT Commodore, VTh RTh, Assessment Prob.

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