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#### All Subjects Engineering General Engineering EEGR 215 LAB3 SPRING 2015.

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# EEGR 215 LAB3 SPRING 2015.

Question # 00062315
Subject: Engineering
Topic: General Engineering
Due on: 05/12/2015
Posted On: 04/20/2015 08:02 PM

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EEGR 215 Materials and Devices

### LAB 3: Circuit Simulation Analysis

OBJECTIVE:

In this exercise students will use circuit simulation to perform circuit analysis. Circuit simulation plays a major role in circuit design, and, as such, there are many circuit analysis software systems to choose from. For this lab, the students are free to use any circuit simulation software at their disposal. The onsite lab provides the students with access to National Instruments Multisim circuit simulator. Students can also download and use a popular free circuit simulator named LTSpice (.linear.com/designtools/software/">http://www.linear.com/designtools/software/). LTSpice is available for both Windows and Mac OS X.With the software, circuit designers can quickly design, simulate, and test circuits.To develop skills in circuit simulation, the students will construct and simulate a circuit to determine the electrical propertiesand characteristics of the circuit elements.

EQUIPMENT:National Instruments Multisim, LTSpice, or Comparable Circuit Simulator

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PROCEDURE:

##### Part I: Resistive Circuit Network

Many times circuit designsconsist of complex circuit schematics that may contain hundreds of circuit elements. The knowledge of the voltage and current results for these elements must be determined. Conventional hand analysis is impractical for these types of circuits, so the electrical properties of the elements must be determined using simulation software.

In the circuit diagram shown below, the student is to capture the circuit using your circuit simulator and perform a linear DC sweep analysis from 1 to 10 volts at 0.5 increments. The DC sweep analysis is performed by using the DC dot command.

By clicking on the node for each element, the simulation shows the voltage sweep across that element. Clicking on the element itself shows the current going through the element. Using the results of this simulation analysis, fill in the table below.

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(a) Using the DC sweep analysis results from your circuit simulation, fill in the table below.

 Voltage Source V Volts on 15W Volts on 5W Volts on 10W 2 V 5 V 10 V

(b) In the simulation, click on the 10 V voltage source, the 12.5W, the 10W, and the 30Wresistor to show the current going though each element. At 10 V, add together the current going through each element. What is the sum of these currents?

##### Part II: Resistive Circuit Network Comparison

(a) Using the above circuit diagram, change the 10 V voltage source on your schematic to a sine wave function. Give the sine wave a DC offset of 0, an amplitude of 10, and a frequency of 1000 Hz.

(b) Change the DC sweep analysis to a Transient analysis. Set the Stop Time to 20m seconds.

(c) Run the simulation. Click on the node above the voltage source to get the voltage across the source, and then click directly on the 30W resistor to get the current across this element.

(d) Capture this diagram and put it in your report.

(e) Next, cut the 30W resistor from the schematic and replace it with a 10u Farad capacitor. Repeat the above steps used on the 30W resistor.

(f) Next cut the capacitor from the schematic and replace it with a 10m Henry inductor. Repeat the above steps.

(g) In your report, describe and compare the waveform results in the diagrams for the 30W resistor, 10u Farad capacitor, and the 10m Henry inductor.

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#### EEGR 215 LAB3 SPRING 2015.

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Posted On: 04/20/2015 08:03 PM
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