Name: Ian Van Horn

Email: imvanhorn1@gmail.com

A Review of Superposition, Thevivinin equivilent circuts, and LTSpice

This lab revisites key topics from ENGR 201 (Circuts). Superposition can be an efficent technique to solve circuts with multipule voltage sources. Thevivinin equivilent circuts simplify a given circut, in this lab it allows easy calculation of RC time delay. LTSpice, a circut simulation software, is used to verify the results of the lab. All simulations are designed using spice code rather than a schematic to better understand the functioning of nodes in the circut.

This lab require the LTSpice software as well as a pencil and paper for calculations

Task 1: Review Superposition and Spice (50 points). Grading rubric: Spice code (10 points), hand calculation (10 points), simulation results (10 points), writing/formatting (20 points).

(Build the circuit in Spice code ONLY. Do not use symbols and schematics)

Figure 1: Refrence Circut

Figure 2. Spice Code and Simulation Results for Task 1

Figure 2 shows the Operating Point analisys and Spice code for the circut in Figure 1.

Figure 3: Hand Caculations for Task 1

Task 2: Review Thevenin's Equivalent Circuit and RC time delay (50 points). Grading rubric: Spice code (10 points), hand calculation (10 points), simulation results (10 points), writing/formatting (20 points).

(Build the circuit in Spice code ONLY. Do not use symbols and schematics)

Figure 4: Spice Code and Transient Analysis displaying Time Delay

Figure 5: Hand Calculations of Thevivnan Equivilent Circut and RC Time Delay

This lab provided a good refresher on basic ENGR 201 concepts. LTSpice proved to be a useful analysis tool.