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Simple audio amplifier

TheElectronicMusicProject·simple_audio_amplifier

Simple audio amplifier PCB layout, top view — open source board by TheElectronicMusicProject

About the Simple audio amplifier PCB

Simple audio amplifier is an open source PCB design by TheElectronicMusicProject, published on GitHub. It is a 2-layer board measuring 80 × 50 mm, with 31 components from 22 distinct parts.

Other key parts include the LM386N-1/NOPB. By type, the board carries 12 capacitors, 6 resistors, 4 diodes, 3 connectors, 1 IC and 1 transistor.

It belongs with the audio designs in this gallery.

From the project

This is an audio amplifier project made with the LM386.

- Creator of the project: Filippo Graziani aka Circuitry Passion - CAD for design: KiCad 9.0.4-9.0.4-0~ubuntu22.04.1, release build

This project is an exercise to correctly use KiCad to design a complete project. The amplifier consists of the LM386N audio mono amplifier with some circuitry to adjust:

- Gain (incremented with clockwise rotation) - Volume (incremented with counterclockwise rotation) - Bass (incremented with counterclockwise rotation)

Main components on the Simple audio amplifier

LM386N-1/NOPB

Simple audio amplifier bill of materials (BOM)

31 components, 22 distinct parts.

QtyPartRefs
1
LM386N-1/NOPB
LM386N-1
U1
1
2N2222A
Q1
2
TB006-508-02BE
J1, J3
1
PJ-322
J2
2
PDB181-K420K-103B
10 K
RV1, RV3
1
PDB181-K420K-202A2
2 K
RV2
1
500SSP3S1M6QEA
S1
2
1N5819
D1, D2
1
LTL-307GLC
Green LED
D3
1
NZX13B,133
D4
4
860020672010
10 uF
C1, C2, C5, C10
1
860080672001
22 uF
C3
1
K103K10X7RF5UL2
10 uF
C4
3
K104K15X7RF5TL2
0.1 uF
C6, C9, C12
1
860080675015
220 uF
C7
1
K683K15X7RF5TL2
68 nF
C8
1
K333K15X7RF5TL2
33 nF
C11
2
MF0207FRE52-10K
10 K
R1, R5
1
MF0207FTE52-7R5
7.5
R2
1
MF0207FTE52-5K1
5.1 K
R3
Show 2 more
QtyPartRefs
1
MFR50SFTE52-470R
470
R4
1
MF0207FTE52-1K
1 K
R6

Simple audio amplifier design files

The KiCad project lives in the TheElectronicMusicProject/simple_audio_amplifier repository on GitHub; these links point at the commit this page was built from.

Simple audio amplifier: common questions

How big is the Simple audio amplifier PCB?

The Simple audio amplifier measures 80 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Simple audio amplifier?

31 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Simple audio amplifier design files?

From the TheElectronicMusicProject/simple_audio_amplifier repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Simple audio amplifier design in my own project?

The repository has no license, so all rights stay with TheElectronicMusicProject. Use it as a reference, and ask the author before reusing the design.

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