ELEC 226, Spring 2009
Prof. Rich Kozick
Laboratory 6
Design of a Waveform Generator
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.
Design Specifications:
- Your circuit should produce three simultaneous output signals:
the square, triangle, and sine waves.
- 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.
There are several ways to design this system, so be creative and have fun!
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.
- 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.
- Prepare a lab report that documents the items listed above.
One report will be submitted by each lab group, and it will be
due on Thursday, April 23 by 4 PM.