The German University in Cairo
Electronics Dept., Faculty of IET
Semester: 6th Electronics
Course: Electronic Circuits (ELCT 604)
Eng. Fayrouz Shaheen
Spring 2026
Assoc. Prof. Dr. Eman Azab
Project Description:
This project aims to use the studied devices through the semester to develop
a very popular circuit “audio amplifier”.
Figure 1: Audio Amplifier
As shown in Fig. 1, a detailed design of the audio amplifier. It is required to do the
following in a group of (2-3 students):
1- Simulate the circuit on any preferred simulation tool of your choice
(SPICE, Proteus). You can use AC-source as the input signal, also
you can use a regular resistive load as a speaker.
• Perform DC-Analysis to calculate all currents and voltages for all circuit
elements.
• Perform AC-Analysis to calculate the amplifier’s voltage gain.
2- Implement the circuit using discrete components.
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The German University in Cairo
Electronics Dept., Faculty of IET
Semester: 6th Electronics
Course: Electronic Circuits (ELCT 604)
Eng. Fayrouz Shaheen
Spring 2026
Assoc. Prof. Dr. Eman Azab
Deliverables:
1- Working hardware circuit (Breadboard is Obligatory, PCB will be
bonus)
2- Well-written report about all your simulation and circuit analysis
results (Hand Analysis).
Project Instructions:
1- Evaluation time slots will be announced by the T.A
2- Deadline is on 28th of April 2026, early submission will earn bonus
grades (by 21st of April)
Helpful links:
1- https://www.circuitbasics.com/transistor-amplifiers/
2- https://www.electronics-tutorials.ws/amplifier/class-ab-amplifier.html
“In case you wanted to cascade a power amplifier to use an 8 ohm speaker”
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