Circuit analysis using superposition is done in steps taking one source at a time. Due to voltage sources, open-circuit current sources and solve for the current and voltage

EE210

Lab #4

Superposition and Linearity

Objective

This experiment aims at illustrating the concept of circuit analysis using superposition. The superposition principle states that the voltage across (or current through) an element in a linear circuit is the algebraic sum of the voltages across (or currents through) that element due to each independent source acting alone.

Circuit analysis using superposition is done in steps taking one source at a time. Due to voltage sources, open-circuit current sources and solve for the current and voltage. Due to current sources, short-circuit voltage sources and solve for the current and voltage. The desired current or voltage is the sum of the contributions of all sources.

A linear circuit is one whose output is linearly related (or directly proportional) to its input.

image3.png

Figure 1: Circuit to be analyzed

lab

If R1 = 1k Ω , R2 = 5.6 k Ω, and R3 = 6.8 k Ω

1. image1.pngUsing multisim simulate the circuit in Fig 1. Show Ix, Iy and Iz

image2.png

Figure 2: Circuit with 15 V Source Removed Figure 3: Circuit with 10 V Source Removed

2. Using multisim simulate the circuit shown in Figure 2. Show Ix’, Iy’ and Iz’

3. Using multisim simulate the circuit shown in Figure 3. Show Ix’’, Iy’’ and Iz’’

4. Design an experiment to show the property of linearity. Document your design and your results.

Report.

Write a lab report. Include an introduction (do not copy mine).

Show all of the circuits used in steps 1-3. Verify superposition . Explain how your linearity experiment shows the property. Write a conclusion.

Report due on 4/6 For all students. (Midnight.) I am available for zoom meetings to talk about the lab. Send me an email with suggest times. I will send you the zoom link back for one of the suggested time. (or suggest a new time if needed.)

EE 210 Lab 4 Spring 2020

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