Lab 3: Nodal Analysis

Lab 3: Nodal Analysis

March 6, 2018

Purpose: In this lab we use nodal analysis techniques for circuits with multiple power supplies. By analyzing the currents at circuit nodes, we can calculate what the voltage at those nodes will be. For the pre-lab we analyze circuit on paper before building the circuit, taking measurements and comparing results.

Below is the pre-lab analysis that was conducted on the circuit shown:

The voltages predicted were 2.36V for V1 and 4.36V for V2. Next we constructed the circuit as shown below:

We used the Analog Discovery tool to provide the required power supplies and took measurements with a DMM.

We measured the voltages as 2.34V at V1 and 4.33V at V2. This is a difference of 0.8% for V1 and and 0.7% for V2. 

Conclusion: The results for the measured and expected voltages are very close and better than I anticipated. The lab was successful and shows that nodal analysis is an accurate means of analyzing a circuit with multiple power sources.