This is a basic circuit idea of making audio amplifier using PAM8403 chip. Note that this is readily available as a module. But if you need to try your hands on it or want to modify it following circuit may be handy.
Key Features
- 3W Output at 10% THD with a 4 Load and
- 5V Power Supply
- Efficiency up to 90%
- Short Circuit Protection
- Thermal Shutdown
- Require very few External Components to Save the Space and Cost
Circuit Idea
Parts list required
- IC PAM8493
- Speakers 2 nos ( 4/8 ohm)
- C1 – 0.1 μf
- C2 and C3 – 220 nf
- C4, C5, C7 – 1 μf
- C6 – 470 μf
- R1 and R2 10k
- Volume control -100 k double pole.
