My lab group designed an audio amplifier for the final project in our analog circuits class. We demonstrated the circuit on a breadboard, but for fun I decided to design a PCB for it. I never fully assembled the board, but here is a look at what came back from the board house. I stuck with through hole components since that is what we tested out in the lab. The design uses discrete BJT’s to provide a differential input stage, gain stage, and class AB output stage. Specs: 0-1W output power, <0.5W idle power, no audible distortion, +/-10V power supply. I came out of this project with a desire to learn more analog circuit design. There is a lot to learn!
Designed with Eagle software
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