Audio amplifier
About the Audio amplifier PCB
Audio amplifier is an open source PCB design by jeff4444, published on GitHub. It is a 2-layer board measuring 47 × 49 mm, with 14 components from 9 distinct parts.
Other key parts include the LM386. By type, the board carries 6 capacitors, 3 connectors, 2 resistors and 1 IC.
It belongs with the audio and power & battery designs in this gallery.
From the project
A compact low voltage audio power amplifier PCB based on the LM386 integrated circuit.
A compact low voltage audio power amplifier PCB based on the LM386 integrated circuit.
This board provides simple audio amplification suitable for driving small speakers from line-level audio sources. The LM386 is a popular choice for battery-powered audio applications due to its low power consumption and minimal external component requirements.
- LM386 Audio Power Amplifier IC - Wide operating voltage range: 4V to 12V - Built-in gain control (20-200) - Low quiescent current for battery operation
Main components on the Audio amplifier
Audio amplifier bill of materials (BOM)
14 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM386 | DIP-8_W7.62mm | U1 |
| 2 | Conn_01x02_Socket | PinSocket_1x02_P2.54mm_Vertical | J1, J3 |
| 1 | Conn_01x03_Socket | PinSocket_1x03_P2.54mm_Vertical | J2 |
| 2 | R_Potentiometer_US | Potentiometer_TT_P0915N | RV1, RV2 |
| 2 | C_Polarized_US | CP_Radial_D10.0mm_P5.00mm | C1, C4 |
| 2 | C_Polarized_US | CP_Radial_D8.0mm_P5.00mm | C2, C6 |
| 2 | C | C_Rect_L4.0mm_W2.5mm_P2.50mm | C3, C7 |
| 1 | R_US | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | R_US | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2 |
Audio amplifier design files
The KiCad project lives in the jeff4444/kicad-projects repository on GitHub; these links point at the commit this page was built from.
Audio amplifier: common questions
How big is the Audio amplifier PCB?
The Audio amplifier measures 47 × 49 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Audio amplifier?
14 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the Audio amplifier design files?
From the jeff4444/kicad-projects repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Audio amplifier design in my own project?
The repository has no license, so all rights stay with jeff4444. Use it as a reference, and ask the author before reusing the design.
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