Eurorack PSU
About the Eurorack PSU PCB
Eurorack PSU is an open source PCB design by butchwarns, published on GitHub. It is a 2-layer board measuring 170 × 60 mm, with 51 components from 24 distinct parts.
Other key parts include the LM317_TO-220 and LM337_TO220. By type, the board carries 13 diodes, 13 capacitors, 8 connectors, 6 resistors, 3 ICs and 2 fuses.
It belongs with the audio and power & battery designs in this gallery.
From the project
A linear adjustable power supply for modular synthesizers in the Eurorack format. It's easy to build and outputs more than 1A at +12V, -12V and +5V.
A simple linear adjustable power supply for modular synthesizers in the Eurorack format. It's easy to build and outputs more than 1A at +12V, -12V and +5V each.
I designed this power supply for use in my own modular synthesizer projects. Thought i'd share the board with other synth builders. (Gerber files in the repo can be directly uploaded to your pcb manufacturer of choice. Interactive BOM for easy assembly included.)
Main components on the Eurorack PSU
Eurorack PSU bill of materials (BOM)
51 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | LM317_TO-220 | TO-220-3_Vertical | U1, U2 |
| 1 | LM337_TO220 | TO-220-3_Vertical | U3 |
| 2 | ~12VAC_A | Flat_Connector_Vogt_6.35mm_P5mm | J1, J2 |
| 2 | ~12VAC_B | Flat_Connector_Vogt_6.35mm_P5mm | J3, J4 |
| 1 | +12V | Flat_Connector_Vogt_6.35mm_P5mm | J9 |
| 1 | GND | Flat_Connector_Vogt_6.35mm_P5mm | J10 |
| 1 | -12V | Flat_Connector_Vogt_6.35mm_P5mm | J11 |
| 1 | +5V | Flat_Connector_Vogt_6.35mm_P5mm | J12 |
| 2 | fast | Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | F1, F2 |
| 1 | +5V_Regulator | Heatsink_Fischer_SK129-STS_42x25mm_2xDrill2.5mm | HS1 |
| 1 | +12V_Regulator | Heatsink_Fischer_SK129-STS_42x25mm_2xDrill2.5mm | HS2 |
| 1 | -12V_Regulator | Heatsink_Fischer_SK129-STS_42x25mm_2xDrill2.5mm | HS3 |
| 3 | 10k | Potentiometer_Bourns_3296W_Vertical | RV1, RV2, RV3 |
| 4 | 1N5060 | D_DO-15_P10.16mm_Horizontal | D1, D2, D3, D4 |
| 6 | 1N4004 | D_DO-41_SOD81_P10.16mm_Horizontal | D5, D6, D7, D8, D9, D10 |
| 1 | LED_+5V | LED_D3.0mm | D11 |
| 1 | LED_+12V | LED_D3.0mm | D12 |
| 1 | LED_-12V | LED_D3.0mm | D13 |
| 4 | 3300uF | CP_Radial_D16.0mm_P7.50mm | C1, C2, C3, C4 |
| 3 | 100nF | C_Disc_D3.0mm_W1.6mm_P2.50mm | C5, C6, C7 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | 22uF | CP_Radial_D5.0mm_P2.00mm | C8, C9, C10, C11, C12, C13 |
| 1 | 2k2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 2 | 560 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3 |
| 3 | R | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5, R6 |
Eurorack PSU design files
The KiCad project lives in the butchwarns/Eurorack_PSU repository on GitHub; these links point at the commit this page was built from.
- LayoutPSU.kicad_pcb
- SchematicPSU.kicad_sch
Eurorack PSU: common questions
How big is the Eurorack PSU PCB?
The Eurorack PSU measures 170 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Eurorack PSU?
51 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the Eurorack PSU design files?
From the butchwarns/Eurorack_PSU repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Eurorack PSU design in my own project?
The repository has no license, so all rights stay with butchwarns. Use it as a reference, and ask the author before reusing the design.
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