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2 layers95 × 45 mmAmp AB, the printed circuit board in 3D

Repositorio con los archivos de diseño, simulación y fabricación de un amplificador de audio Clase AB, desarrollado como proyecto final para la asignatura Proyecto Transversal V de la Universidad Nacional de Mar del…

Size
95 × 45 mm
Copper layers
2
Thickness
1.6 mm
Parts
24
Nets
14
Pads
55
Tracks, vias
74, 0
Pours
47
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
13 Jun 2026
Updated
22 Jun 2026

Overview

Amp AB is an open-source printed circuit board by demianmozo, from the demianmozo/amp_AB repository on GitHub. It is a 2-layer board of 95 × 45 mm with 24 parts on 14 nets, routed with 74 tracks and 0 vias.

It is built around the NE5532, TIP141 and TIP146. Its parts include 8 capacitors, 5 resistors, 4 connectors, 2 transistors and 1 IC. It belongs with the audio and music boards of this library.

Main components

3

README

README.md

Amplificador de Audio Clase AB

UNMDP Carrera Materia

Repositorio con los archivos de diseño, simulación y fabricación de un amplificador de audio Clase AB, desarrollado como proyecto final para la asignatura Proyecto Transversal V de la Universidad Nacional de Mar del Plata (UNMDP).

👥 Equipo de Trabajo

  • Ian P. Larrieu Lacoste
  • Augusto Loyza
  • Demian N. Mozo

📝 Descripción del proyecto

El sistema cuenta con las siguientes características principales:

  • Topología: Amplificador de potencia de audio Clase AB (utilizando transistores Darlington TIP141/146).
  • PCB: Diseño simple faz (ruteado en la capa inferior B.Cu) pensado para CNC.

🛠️ Herramientas utilizadas

  • LTspice: Simulación eléctrica del circuito y análisis de respuesta en frecuencia.
  • KiCad (v10): Captura de esquemático y diseño del Layout del PCB (generación de Gerbers y Drill files).

⚙️ Notas de fabricación (CNC)

⚠️ IMPORTANTE: Para fabricar este PCB en la CNC:

  1. Importar archivos: Cargar los archivos de cobre (amp_AB-B_Cu.gbr), contorno (amp_AB-Edge_Cuts.gbr) y los archivos de perforación (amp_AB-PTH.drl y amp_AB-NPTH.drl).
  2. Espejado (Mirror): Como el ruteo se diseñó visto desde la capa superior (Top), se deben seleccionar todos los archivos importados y espejarlos simultáneamente (respecto al eje X o Y) utilizando la herramienta de FlatCAM.
  3. Isolation Routing: Generar las pasadas de la fresa.
  4. Perforación y Corte (Cutout): Generar los G-Codes correspondientes para los agujeros y el corte del perímetro (Edge_Cuts).

Parts

24
QtyValueFootprintReferences
4MountingHoleMountingHole:MountingHole_3.2mm_M3H1, H2, H3, H4
2100kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR3, R4
222µCapacitor_THT:CP_Radial_D10.0mm_P5.00mmC7, C8
24.7kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR5, R6
10Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR7
1100nCapacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mmC5
1100nCapacitor_THT:C_Rect_L10.0mm_W4.0mm_P7.50mm_MKS4C6
11mCapacitor_THT:CP_Radial_D10.0mm_P5.00mmC3
11nCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mmC4
1470nCapacitor_THT:C_Rect_L13.0mm_W6.0mm_P10.00mm_FKS3_FKP3_MKS4C1
1470µCapacitor_THT:CP_Radial_D8.0mm_P3.50mmC2
1AudioConnector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_VerticalJ2
1Conn_01x02TerminalBlock:TerminalBlock_bornier-2_P5.08mmJ3
1NE5532Package_DIP:DIP-8_W7.62mm_SocketU2
1Pot_10kConnector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_VerticalJ4
1PowerConnector_Molex:Molex_KK-254_AE-6410-03A_1x03_P2.54mm_VerticalJ1
1TIP141Package_TO_SOT_THT:TO-218-3_VerticalQ1
1TIP146Package_TO_SOT_THT:TO-218-3_VerticalQ2

Questions

How big is the Amp AB PCB?

It measures 95 × 45 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Amp AB use?

24 parts, built around the NE5532, TIP141 and TIP146. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Amp AB KiCad files?

From the demianmozo/amp_AB repository on GitHub, at the commit this page was made from: the board is amp_AB.kicad_pcb and its schematic amp_AB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Amp AB design in my own project?

Its repository states no licence, so its author keeps all rights: ask demianmozo before reusing the design.

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