Problem Statement: Find the Thevenin equivalent circuit at the terminal pair A-B in symbolic form, i.e., derive equations for the Thevenin voltage VTH and resistance RTH in terms of the circuit element values. Evaluate the Thevenin equivalent circuit equations for R1 = R2 = 4.7 kW and m = -1.5, 0.5, 1.0, and 1.3.
Analysis:
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Use the node voltage method to determine the open-circuit voltage VOC, use the mesh current method to find the short circuit current ISC, and determine the Thevenin resistance as VOC divided by ISC