Electronic Circuits – EE359A
Final project requirements
•  Write a report describing your design, including
•  Definition of the problem addressed by your design
•  Assumptions
•  Design goals (e.g., performance)
•  Component specifications, including tolerance and power dissipation
•  Presentation of design (including schematic)
•  Circuit analysis using concepts presented in course and textbook
•  Simulation results, including any models used
•  Tolerance of system design to system variation, e.g., component
tolerances, supply voltage, temperature, etc.
•  Conclusions, observations
•  References
Electronic Circuits – EE359A
Final project requirements
•  The written report should be 8-10 pages, not including illustrations and simulation
results. Each student will present a 5 minute verbal description of their project
during the last two classes
•  A 1-2 paragraph project abstract will be due in 2 weeks describing the circuit you
plan on designing
Electronic Circuits – EE359A
Sample projects
•  The following is a list of sample projects to illustrate the level of difficulty expected
in your design project. You may choose one of these or propose your own
problem of about the same complexity. Any of these circuits are available off-theshelf as IC modules, that is not what is required – you are to design the circuit out
of discrete components (transistors, diodes, resistors, capacitors, etc.)
•  Just like Olympic high diving and acrobatic events, grading is based on
performance as well as difficulty of task attempted.
•
Three transistor audio amplifier: input signal 10 mV P-P, output 2 watts into
8 ohm speaker. Frequency response: 50 Hz – 10 kHz ±1 dB. Operates
with +12 V DC supply voltage. THD < .5% with maximum input level sine
wave.
•
Transistorized oscillator: output signal up to 5 V P-P, level controlled to
within .1 dB with +12±1 V DC supply voltage over an output frequency from
100 Hz to 10 kHz. THD < 1% for sine wave output. Extra credit for
maintaining level to within .01 dB, extra credit for operation to 1 MHz, extra
credit for generation of sine, triangle and square waves.
•
Regulated power supply: input voltage 90 – 130 VAC rms, output 12VDC
±1% with output current from 0 – 2A.
Electronic Circuits – EE359A
More sample projects
•
Audio filter with response from DC – 3000 Hz +/- 1 dB and at least 40 dB
attenuation at 4000 Hz
•
“Color organ” – a device consisting of a set of filters that process an audio
signal and drive a set of lamps or LEDs based on the energy present at
individual ranges of frequencies (e.g., red for low frequencies, yellow for
mid range, green for high frequencies)
•
LED sound level meter – one or more LEDs light up depending on sound
level (on a logarithmatic scale corresponding to dB or Volume Units -VU)
•
DC motor speed H-bridge controller – a pulse width modulator controls the
speed (and direction) of a DC motor based
•
Nonsense box – a series of LEDs or neon bulbs blink randomly based on
operation of a series of relaxation oscillators
•
The Inebriated Lady Bug (a name used in Popular Electronics Magazine
from ~1963) – a line following robot using only light sensors, transistors and
DC motor controllers
Electronic Circuits – EE359A
Final project requirements
•  Do not over-specify components, e.g., a 2 Watt resistor where a ¼ watt will do, a
1% resistor where a 10% will do
•  Extra credit for experimentally verifying circuit operation