Thevenin equivalent circuit

The Thevenin equivalent circuit is the reduction of a linear one port circuit to a single source and impedance and is based on Thevenin’s Theorem. This notebook describes solving problem 11.25, given in chapter 11 of [1]. The Python libraries of SimPy and Numpy are used to perform the math in the proposed solution. The problem asks the student to replace the circuit to the left of terminals a-b by its Thevenin equivalent and find V. The schematic was drawn using LTspice [2] and the nodes were numbered. Terminals a-b are across the resistor R3. The circuit given in the textbook does not include a reference node, however the node at the bottom of the schematic was chosen as the reference node, ground.

Having drawn the circuit in LTspice, the netlist was exported as a text file. The solution is worked out in the jupyter notebook which can be viewed here. 

The Jupyter notebook is located on github, click here to follow the link to the repository.

Reference

1. Basic Electric Circuit Analysis, D. E. Johnson, J. L. Hilburn, and J. R. Johnson, Prentice-Hall, 1978

2. LTspice, last accessed on 2/24/2022.