D5 - Nodal and Mesh Analysis

We started the class with the idea of a super node. A super node is voltage source between two nodes. Super nodes require the usage of KCL and KVL to be useful.

White board work of the first example of a super node problem.

We then moved on to the first lab of the day.
Nodal Analysis.
The prelab required the schematic drawn out with resistors values and use node analysis on it.

Could not find the white board example, here it is on the lab paper.

Here is white board work on what the voltage on Va should be, -0.0718V

Picture of our setup testing the voltage, and current of our circuit.

Data for the Nodal analysis lab, we recorded the actual resistors and ideal and then compared the currents and found our voltage percent error to be 10%.

Another picture but with all of work shown on the white board.

We then moved on to talk about mesh analysis. Mesh is a loop of current going clockwise. We apply KCL and KVL to each mesh loop. We then tried examples in class.

White board work of the mesh example. Every circuit username: Climactacus Pass: E442016

We then moved onto talking about Cramer's rule. And then closed out the day with color coding examples of resistors.

White board work of the color coding exampels of resistors. First two bands mean a number while the third means the power of it in term of tens.

More color coding examples.

More color coding examples.

Prof. Mason color coding translation of colors and names. The colors of the left were the examples done on the white board.

In summary:
We started the class with introduction of super nodes and how they become to be. A super node is a voltage source between two nodes, it can be come useful when KCL and KVL is applied to it. We spent most of the class time working on examples with node analysis, both on white boards and in lab. The lab was to show us how effective nodal analysis is when diagnosed or designing a circuit in the real world. We ended the class with into on mesh analysis and why clockwise is chosen for loops. Color coding of resistors is better than numbers because its cheaper and easier to see.