Design, simulate, and test an Audio Amplifier which delivers one of the above power outputs to an 8Ω speaker load.

Audio Amplifier Group Project

Content

Electronics I and Lab

Audio Amplifier Project

This is a group project which will require working with another student. The project is a design project using Multisim with the requirements given below. The project is due on the last day of the term.

Total Points: 100

Project name: Audio Amplifier (Multistage)

Audio Amplifier Power Output selection: 3.2 W, 5.6 W, 7.1 W, 8.4 W, 11.5 W, and 16.3 W

Audio Amplifier Input Voltage (peak) selection: 150mVpeak, 200mVpeak, 250mVpeak

Audio Frequency: 20 Hz – 20 KHz

Deliverable: Multisim design (soft copy), test results, short report, and teamwork evaluation

Note: Multisim must be configured so a date and time stamp is visible in all simulations. Omission of the date and time stamp causes the lab to be worth only 1%.

Project Definition:

Design, simulate, and test an Audio Amplifier which delivers one of the above power outputs to an 8Ω speaker load. The output power of your design and the input signal of your design must be selected from the above list. The audio frequency range is between 20 Hz to 20 KHz, so the operating frequency of your design will be within this range. The measuring equipment should display the output power and the input signal of your design. You are required to use either or both NPN and PNP transistors, but not an op-amp. It is recommended that you use multistage amplification of any class amplifiers of your choice. You should try to minimize your usage of components and be cost effective.

Project Structure:

In general, you will have one other classmate in your team. Each of you will design and simulate an audio amplifier with different specifications, each making your choice from the above parameters. Thus, it is highly suggested that you communicate with your partner as early as possible to plan and coordinate your activities, select the input voltage and output power for your design, and establish a schedule. For the testing phase, you will develop a test plan and characterize and validate your teammate’s amplifier.

During the project period, you are encouraged to communicate, exchange ideas, and help each other complete your project. A team area will be set up for you in Blackboard, and you are required to use this area as part of your grade will be based on effectively using this tool.

Project Deliverable: Report and the multisim design for your project

Each student will submit an individual report. The report should, as a minimum, include the following:

· Title Page (Name, Partners name, like the table they have in the document)

· Description of your project (including the specifications you selected)

· Design methodology (show calculations and provide rationale for design choices; remember that your choices must take into consideration commonly available parts)

· Final schematic in Multisim

· Components/Parts list with cost and total project cost

· Simulation results for your design

· Testing process and results for characterization and validation of your teammate’s design – screenshots along will not suffice. Description of process is required along with discussion of results.

· Project Challenges: Note any difficulties you faced during the completion of your design and how you overcame them

· Team Interaction Reflection: Describe how you used Blackboard to facilitate interaction, how you worked with one another in the design phase, challenges you encountered, methods you employed to overcome any challenges.

· Teammate Assessment: Use the Project Participation Rubric below and give your teammate a ranking of Needs Improvement, Competent, or Excellent for the first two items in the rubric: Interacts professionally and Plans and organizes team effort. Be sure to justify your ranking.

· Conclusion

· References

(Yourself):

Ranking

Reasoning

Interacts Professionally

Plans and Organizes Team Effort

Teammate Name:

Ranking

Reasoning

Interacts Professionally

Plans and Organizes Team Effort

Teammate Name:

Ranking

Reasoning

Interacts Professionally

Plans and Organizes Team Effort

PROJECT PARTICIPATION RUBRIC

EXCELLENT

COMPETENT

NEEDS IMPROVEMENT

Interacts professionally with team members – cooperative, respectful, shares ideas and work load, completes tasks on time

Performs work on time; attends all meetings on time; participates in timely fashion in asynchronous collaborative efforts. Listens and responds appropriately. Encourages other points of view. Openly shares information. Receptive to feedback. No complaints from any of the team members.

Performs work on time; attends all meetings and participates in asynchronous collaborative efforts but may be occasionally late in attendance, providing information or updates. Listens and responds appropriately. Shares information but may require prompting. Minimal complaints from other team members.

Is sometimes late in providing information or updates; or may miss meetings; or shares information but often requires prompting; or is unreceptive to feedback; or fails to consider other viewpoints. Numerous complaints from other team members.

Plans and organizes team effort including roles, work distribution, and collaboration tools

Actively participates in development of team objectives, planning, and organization, including roles and tools. Quick to identify own knowledge and skills applicable to the project and contributes in assigned role.

Participates in development of team objectives, planning, and organizing though some prompting may be required. May not understand the planning phase well but values the process. With help, identifies contribution which can be made and fulfills assigned role.

May not value the planning and organizing process and the establishment of roles; or struggles in how to fit into the project; or depends on others to fulfill assigned role.

1. Conclusion

Grading Rubric

Group Project Rubric EE212 Electronics I and Lab

Design methodology including realistic, appropriate design choices

40 points

Functionality of final design – simulation of your design and achievement of specifications – focus is on demonstrating that specifications were met

10 points

Test plan and characterization/validation of teammate’s design – focus on testing methodology and identifying any shortcomings

20 points

Management of technical and teamwork challenges

10 points

Report – all elements; well-written

10 points

Teamwork / Participation

Name:

GID:

Lab 1:

Grantham University

Date:

Introduction:

Write one to two paragraphs about the Lab. Explain the following information for this lab:

· What are the goals to achieve in the lab?

· What are the expectations of the lab?

· How will you be implementing this lab?

· What will you try to measure?

Equipment/Components:

List the type of equipment or components that you will be using? Where will you find these components? How will you use these components in Multisim/VHDL? Explain any adjustments required such as tolerances.

Procedure:

Briefly describe how you will approach the problem and try to solve the lab, describe and explain any techniques/rules/laws/principles you would use. Outline each step of the process.

Circuit design:

Take a screenshot of the circuit/logic from Multisim/VHDL as asked in the lab assignment before you run the circuit and paste it here in your report.

Execution/Results:

Run the circuit in Multisim/VHDL and copy/paste the results from the simulation including any readings, plots or graphs.

Copy/Paste the screenshots for all the measurements required in the lab here. Be sure to add a title and explain what each of the screenshots represent.

Analysis:

Analyze the results obtained from Multisim/VHDL and compare those to your calculated results (if required).

Answer the following questions:

· What did you discover/confirm?

· Use tables and diagrams to record results.

· Compare calculations with the measured values.

· Analyze your results.

Explain if your simulation is correct or incorrect and why. If the results are confirmed, then your measurements are correct. If they are not confirmed, explain what the problem is. You will need to discuss how to troubleshoot the circuit to achieve the correct results.

Conclusion:

Summarize the entire lab in 1 to 2 paragraphs with the results and analysis in mind.

Answer any questions asked in the lab assignment here.

Cite any sources that you may use in your report.

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