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2 layers137.5 × 112.5 mmPower source, the printed circuit board in 3D

Power source

marians20/audio_amplifier
Full screenGitHub.kicad_pcb
Size
137.5 × 112.5 mm
Copper layers
2
Thickness
1.6 mm
Parts
30
Nets
48
Pads
114
Tracks, vias
204, 8
Pours
1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
16 May 2025
Updated
17 Jun 2025

Overview

Power source is an open-source printed circuit board by marians20, from the marians20/audio_amplifier repository on GitHub, published under the MIT licence. It is a 2-layer board of 137.5 × 112.5 mm with 30 parts on 48 nets, routed with 204 tracks and 8 vias.

It is built around the ESP32-C3-DEVKITM-1, HLK-PM01 and BC337. Its parts include 9 connectors, 4 capacitors, 4 diodes, 3 resistors and 3 transistors. It belongs with the ESP32 and RISC-V boards of this library.

Main components

3

README

README.md

audio_amplifier

PCB Manufacturing Providers

  • PCB Phoenix – Au experiență solidă și pot produce circuite rigide, inclusiv plăci foarte lungi, de până la 2400 mm.

  • PCB-ELECTRA – Parte a Grupului ELECTRA, oferă plăci de circuite imprimate personalizate și are certificare UL.

  • Multi Circuit Boards

  • Price calculator

  • Eashub – Oferă servicii complete, de la prototipuri la producție și asamblare PCB.

  • PCBandAssembly – Se laudă cu livrare expres în 24 de ore și o politică de rambursare 100% pentru defecte de calitate

Parts

30
QtyValueFootprintReferences
310kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR1, R2, R3
31N4001Diode_THT:D_DO-41_SOD81_P10.16mm_HorizontalD1, D2, D3
3BC337Package_TO_SOT_THT:TO-92_InlineQ1, Q2, Q3
3SANYOU_SRD_Form_CRelay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_CK1, K2, K3
2100nFCapacitor_THT:C_Disc_D10.0mm_W2.5mm_P5.00mmC1, C2
22200uFCapacitor_THT:CP_Radial_D18.0mm_P7.50mmC3, C4
2HLK-PM01Converter_ACDC:Converter_ACDC_Hi-Link_HLK-PMxxPS1, PS2
112V DCConnector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_VerticalJ6
15V DCConnector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_VerticalJ5
1B40C1500GDiode_THT:Diode_Bridge_Round_D9.8mmD4
1ESP32-C3-DevKitM-1PCM_Espressif:ESP32-C3-DevKitM-1U1
1Input 12V ACConnector_Wire:SolderWire-0.5sqmm_1x02_P4.8mm_D0.9mm_OD2.3mmJ7
1Input 230V ACConnector_Wire:SolderWire-0.5sqmm_1x02_P4.8mm_D0.9mm_OD2.3mmJ3
1LM7812_TO220Package_TO_SOT_THT:TO-220-3_VerticalU2
1Power Ampl outputTerminalBlock:TerminalBlock_Altech_AK300-4_P5.00mmJ4
1Power Ampli PowerTerminalBlock:TerminalBlock_Altech_AK300-3_P5.00mmJ1
1SpeakersTerminalBlock:TerminalBlock_Altech_AK300-4_P5.00mmJ8
1Traf PrimaryConnector_Wire:SolderWire-0.75sqmm_1x02_P4.8mm_D1.25mm_OD2.3mmJ2
1TrafoTerminalBlock:TerminalBlock_Altech_AK300-4_P5.00mmJ10

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Questions

How big is the Power source PCB?

It measures 137.5 × 112.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Power source use?

30 parts, built around the ESP32-C3-DEVKITM-1, HLK-PM01 and BC337. 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 Power source KiCad files?

From the marians20/audio_amplifier repository on GitHub, at the commit this page was made from: the board is old/power_source/power_source.kicad_pcb and its schematic old/ESP32Board/ESP32Board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Power source design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).