USB 2.4W Audio Amplifier
2.4W（RL=4Ω,THD=10%）3-5V DC P.S
This compact audio amplifier uses the NS8002 integrated circuit to provide up to 2.4 W of output power directly from a USB 5V supply. It is ideal for small speakers, desktop audio systems, or portable USB-powered audio projects.
Power Supply
The amplifier is powered directly via USB (5V DC). No additional power supply is required, making it a plug-and-play solution for PC or laptop audio output.
Circuit Details
- IC Used: NS8002 audio amplifier
- Output Power: 2.4 W into 4 Ω speakers
- Supply Voltage: 5 V DC (USB-powered)
- Low distortion and low-noise amplification suitable for small speakers
- Compact design suitable for portable and USB-powered applications
Construction Notes
- Use short and shielded input wires to prevent noise pickup from USB lines.
- Small heatsink or adequate PCB copper area recommended for the NS8002 IC to dissipate heat at full output.
- Use decoupling capacitors close to the IC supply pins for stable operation.
- Suitable for desktop, laptop, or portable USB audio devices.
Key Features
- USB-powered audio amplifier (5 V)
- Up to 2.4 W output into 4 Ω speakers
- Low distortion and low noise
- Compact and portable design
- Easy plug-and-play for PC or USB audio sources
