The Ultimate Guide to Practical Audio Amplifier Circuit Projects (PDF Resources Included)
- Appendix A: Full BOM for LM3886 (Mouser cart link).
- Appendix B: Thermal resistance calculation worksheet.
- Appendix C: Double-sided PCB artwork (1:1 scale).
- Appendix D: Bill of materials checklist.
Section C: Test & Measurement Protocol
The simulation results of the simple Class A audio amplifier are shown below:
Operation:
It uses electric power from a DC supply to increase the amplitude of an input signal to drive a speaker load (typically
- Power output: 5W into 4Ω (12V), 2.5W into 8Ω.
- THD: <0.5% at 1W.
Call to Action:
Do you have a favorite practical audio amplifier PDF that helped you learn? Share the title and source in the comments below. For more projects, check out our next article: "Switching Power Supplies for Audio: PDF Design Guide."
Project 5: LM3886 Hi-Fi Gainclone (68W)
: Two-input mixer pre-amplifiers and audio signal generators for testing. Specialty Projects : A guitar fuzz pre-amplifier and an Electric Guitar Pacer designed to let musicians play along with recorded music. Common Components and Design