Tag Archives: Thévenin

Find Thevenin's and Norton's Equivalent Circuits

Find Thevenin's and Norton's Equivalent Circuits:
1254-1
Suppose that R_1=5\Omega, R_2=3\Omega and I_S=2 A.

Solution

The circuit has both independent and dependent sources. In these cases, we need to find open circuit voltage and short circuit current to determine Norton's (and also Thevenin's) equivalent circuits.
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Find Voltage Using Voltage Division Rule


Determine voltage across R_2 and R_4 using voltage division rule.
Assume that
V_1=20 V, R_1=10 \Omega, R_2=5 \Omega, R_3=30 \Omega and R_4=10 \Omega
solve using voltage division rule

Solution:
Please note that the voltage division rule cannot be directly applied. This is to say that:
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Thévenin's Theorem - Circuit with Two Independent Sources


Use Thévenin's theorem to determine  I_O.

Thevenin's Theorem - Circuit containing two independent sources

Fig. (1-27-1) - Circuit with two independent sources



Solution
Lets break the circuit at the  3\Omega load as shown in Fig. (1-27-2).
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