Objective: In the final two lab sessions of this semester, you will use your knowledge of circuits to design a system that will generate square, triangle, and sine waves with variable amplitude and variable frequency. You will document your design and results in a lab report.

Please work with two students in each lab group.

Design Specifications:

• Your circuit should produce three simultaneous output signals: the square, triangle, and sine waves, each with zero mean value.
• The amplitude and frequency should be variable using potentiometers.
• Design your system to operate at 1,000 Hz, and strive to make it work over as wide a frequency range as possible. Explain how you would modify your design to make it work over a larger frequency range, both lower and higher.
• The parts that you may use are op amps, resistors, capacitors, inductors, and potentiometers (variable resistors). We will have quad-741 ICs with four op amps.
• The integrator and differentiator circuits in Lab 4 may be useful.
• Please simulate your design in PSpice before building the circuit.

Testing and Documentation:

• Determine the operating range of your design, in terms of the wave amplitudes and frequencies.
• Include a complete circuit diagram of your design, showing all circuit components and their values.
• Show the results of your PSpice simulation.
• Provide a brief explanation of the reasoning that you used to design your system and choose component values.
• Explain how your design can be modified to allow operation over a wider frequency range. Specify which components would be changed, and what values would be used.
• Prepare a lab report that documents the items listed above. One report will be submitted by each pair of students, and it will be due by Thursday, April 22 at 4 PM.
  Your report may be submitted on paper or electronically as an email attachment.