2 layers95 × 58 mm
Eurorack PSU
MitchReyno/Electronics-Projects
A collection of various electronics projects I've worked on over the years
27 partsGPL-3.0
2 layers99 × 96.5 mm
My Modular Eurorack Synth
- Size
- 99 × 96.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 17
- Pads
- 87
- Tracks, vias
- 87, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 17 Mar 2023
- Updated
- 15 Jan 2025
Overview
PSU is an open-source printed circuit board by danlarsson, from the danlarsson/Modular repository on GitHub. It is a 2-layer board of 99 × 96.5 mm with 37 parts on 17 nets, routed with 87 tracks and 0 vias.
It is built around the LM7805, LM7812 and LM7912T. Its parts include 12 capacitors, 6 diodes, 4 connectors, 3 ICs and 3 fuses. It belongs with the audio and music and power boards of this library.
Main components
3
LM7805
TO-2630℃~+125℃ 1 1A 20V 2V 42uV 5V 62dB@(120Hz) 8mA Fixed Over Temperature Protection、Short Circuit Protection Positive TO-263 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSYONGYUTAIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LM7812
TO-263TO-263 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSYONGYUTAIUncategorised
LM7912T
TO-220-31 11.52V~12.48V 1A 21V 7.8mA Fixed Negative Over Current Protection、Short Circuit Protection、Thermal shutdown TO-220-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHGSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdMy Modular
My Modular Eurorack Synth
The plan is to build every module myself, with help from the all mighty internet to get schematics and tips.
KiCad 7.0 is used to create the schematics and PCBs. PCBWay or JLCPCB is used for the PCBs.
Planned Modules:
1. PSU: Power supply + Breakout board + Frontpanel
-
Power Supply
- Design, [X] Order, [] Build, [] Test
-
Breakout board
- [] Design, [] Order, [] Build, [] Test
-
Front panel
- [] Design, [] Order, [] Build, [] Test
2. VCO: Voltage Conntrolled Oscillator
VCO_1
- [] Design, [] Order, [] Build, [] Test
3. VCF: Filter:
4. Envelope Generator:
5. LFO: Low Freq Oscillator
6. VCA: Voltage Controlled Amplifier
7. Mixer:
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3, D4, D5, D6 |
| 6 | 1uF | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C7, C8, C9, C10, C11, C13 |
| 6 | 4700uF | Capacitor_THT:CP_Radial_D18.0mm_P7.50mm | C1, C2, C3, C4, C5, C6 |
| 3 | 1A Polyfuse | Fuse:Fuse_Bourns_MF-RHT200 | F1, F2, F3 |
| 1 | Conn_02x08_Odd_Even | Connector_IDC:IDC-Header_2x08_P2.54mm_Vertical | J3 |
| 1 | LM7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U3 |
| 1 | LM7812 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | LM7912 | Package_TO_SOT_THT:TO-220-3_Vertical | U2 |
| 1 | Power out | Connector_JST:JST_NV_B04P-NV_1x04_P5.00mm_Vertical | J4 |
| 1 | SW_DIP_x02 | Connector_PinSocket_2.54mm:PinSocket_2x02_P2.54mm_Vertical | J2 |
| 1 | Screw_Terminal_01x03 | Connector_JST:JST_NV_B03P-NV_1x03_P5.00mm_Vertical | J1 |
The 28 most common of 37 parts.
Questions
How big is the PSU PCB?
It measures 99 × 96.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PSU use?
37 parts, built around the LM7805, LM7812 and LM7912T. 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 PSU KiCad files?
From the danlarsson/Modular repository on GitHub, at the commit this page was made from: the board is PSU/PSU/PSU.kicad_pcb and its schematic PSU/PSU/PSU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PSU design in my own project?
Its repository states no licence, so its author keeps all rights: ask danlarsson before reusing the design.
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