Question 19.10: Refer to Figure 19-24. Draw the Thevenin equivalent for the ...

Principles of Electric Circuits Electron Flow Version [EXP-40050]

Refer to Figure 19-24. Draw the Thevenin equivalent for the circuit within the beige box as viewed from terminals A and B. This is the circuit used in Examples 19-4 and 19-7.

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From Examples 19-4 and 19-7 respectively, $V_{th}= 11.2\angle 63.4°V$ and $Z_{th}= 44.6\angle 63.4°\Omega$ . In rectangular form, the impedance is

Z_{th}= 20 \ \Omega + j40 \ \Omega

This form indicates that the impedance is a 20 Ω resistor in series with a 40 Ω inductive reactance. The Thevenin equivalent circuit is shown in Figure 19-25.

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