(Basic) Audio amplifier#

An amplifier takes an input signal and converts it into a much more powerful output signal, without distoring it too much. An audio amplifier does just that, only it works best for audio signals.

An audio amplifier prototype

The final result

When and why?#

The electronics summer school organized by Victor Stoica and Asst. Prof. Dumitru-Cristian Trancă taught the students willing to learn many useful skills, including the development of electronic circuits, (de)soldering, choice of components etc.

An intermezzo project was an audio amplifier using the TDA2005R IC, an audio amplifier that is supposed to work at 12V. However, I've spent way too much time on this project, perfecting the quality of the sound as much as possible.

A sidetrack about the summer school#

This summer school was such a great experience! For anybody that is able to enroll, I recommend you do! Not only is it lots of fun, but it taught us so many useful concepts!

Me (bottom-left), Victor (top-left) and other students during the summer school

A different picture depicting the 2023's electronics summer school's students

Features#

The final design depicts a circuit that:

• Accepts a wide range of input voltages, 8V-16V (and actually sounds better when underpowered, i.e. at 10V);

• Provides a stereo output with independent volume control;

• Manages correctly its heat making good use of an aluminium heatsink.