Comparison of Eurorack DIY PSUs: Difference between revisions
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A good clean power supply unit (PSU) is the most important part of a modular system. A proper [[Power supply (linear)|linear power supply]] and good distribution makes a big difference to the stability and sound quality of the system.<ref>[https://www.
=== Safety ===
Use a [https://en.wikipedia.org/wiki/Residual-current_device RCD]. Mains voltages can kill and [[capacitor]]s in disconnected power supplies can still deliver quite a jolt. Unless you're qualified to work with mains electricity, ready made external transformers are safer.
== Comparison ==
{|class="wikitable"▼
!Brand!!Model (& web page)!!Type!!Volts & max. Amps!!Transformer type!!Main components!!Distribution!!Licence!!Comments!!Further info▼
▲{|class="wikitable sortable"
▲!Brand!!Model (& web page)!!Type<ref group="note">Trying to decide what's linear or switching, the transformers are mostly interchangeable so instead going by the type of regulators.</ref>!!Volts & max. Amps!!Transformer type!!Main components!!Distribution!!Licence!!Comments!!Further info
|-
|[[
|-
|[[Befaco]]||[https://web.archive.org/web/20160305071621/http://www.befaco.org/en/tienda/power-bus-diy-kit/ Power bus DIY kit]||linear|| +/-12V @ 0.7A, 5V @ 0.3A||internal switched PS +/-15V DC unit||LM317TL, LM337TL, 78M05||Regulators are on a bus with 14 headers||[https://creativecommons.org/licenses/by-sa/3.0/ CC-BY-SA]||PCB and components kit.||[https://web.archive.org/web/20160405171645/http://www.befaco.org/en/fuente-alimentacion/ schematic, assy instructions, Eagle files]
|[[Clicks & Clocks]]||[http://clicksclocks.de/tag/psu PSU]||linear||+/-12V @ 1.2A||toroidal attached to PCB||LM317, LM337||Separate bus with 14 headers||With permission of Doepfer||Modelled on [[Doepfer A-100]] PSU2||[http://www2.doepfer.de/?p=2806&lang=en A-100 Technical Details]▼
|-
▲|[[Clicks &
|-
|[[Dintree]]||[http://www.dintree.com/#D112 D112 Power Supply]||switching||+/-12V @ 0.625A, 5V @ 0.5A||external 12V DC switched brick||VBED15, 7805||12 headers on PSU PCB||for non-commercial use only||Uses ready made DC to DC converter||[http://www.dintree.com/#D112 schematic]
|-
|[[EFM Synthesizers]]||[http://www.modular.fonik.de/files/EFMforum/orgEFMfiles/3500er/3501_PSU.pdf 3501 Power Supply]||linear||+/-12V @ 1.5A||external transformer||LM317, LM337||can be adapted||
|-
|[[Eowave]]||[http://www.eowave.com/modules/diy-kits/diy-power-supply/ DIY PSU]||switching||+12V @ 1.5V, -12V @ 0.7A,<ref>[http://www.mouser.com/ds/2/405/lm2576-405253.pdf LM2576/LM2576HV Series SIMPLE SWITCHER® 3A Step-Down Voltage Regulator], p.20</ref> 5V @ 0.5A
||external 15V 4A DC switched brick||2xLM2576T, 7805||Separate bus with 15 headers||proprietary||
|-
|[[Erica Synths]]||[
|-
|[[Frequency Central]]||[http://www.frequencycentral.co.uk/?page_id=894 FC Power DIY]||linear||+/-12V @ 0.5A, 5V @ 0.1A||12V AC wall wart||7812, 7912, 78L05||1 header or solder leads to PCB||
|-
|[[Frequency Central]]||[http://www.frequencycentral.co.uk/?page_id=1766 Routemaster DIY]||linear||+/-12V @ 0.5A, 5V @ 0.1A||12V AC wall wart or 12V centre-tapped transformer||LM317, LM337, 78L05||12 Euro, MOTM, or Dotcom headers integrated on PSU PCB||||PCB only. Inexpensive solution for small Euro system.||[https://web.archive.org/web/20161215232344/http://www.frequencycentral.co.uk/wp-content/uploads/2016/08/Routemaster-Build-Document.pdf FC Routemaster Build Doc]
|[[L-1]]||[http://l-1.su/Power.html 12V bipolar linear PSU+busboards]||linear||+/-12V @ 1.5A||toroidal attached to PCB||2xLD1084, 7805||Two 12 header bus PCBs with kit. +5V regulator mounted on bus off 12V rail||unknown||Full kit for PSU + two busboards||[http://www.muffwiggler.com/forum/viewtopic.php?t=128163 Muff Wiggler forum]▼
|-
▲|[[L-1]]||[http://l-1.su/Power.html 12V bipolar linear PSU+busboards]||linear||+/-12V @ 1.5A||toroidal attached to PCB||2xLD1084, 7805||Two 12 header bus PCBs with kit. +5V regulator mounted on bus off 12V rail||
|[[MFOS]]||[http://www.musicfromouterspace.com/analogsynth_new/POWERSUPPLY2009/POWERSUPPLY2009.php Adjustable LM317/LM337 1.5A Supply]||linear||+/-12V @ 1.5A||separate transformer||LM317, LM337||not specified||free for non-commercial use||PCB or PCB and components||▼
|-
|
|-
|[[Metatronic Mods]]||[https://web.archive.org/web/20171102184410/http://www.metatronicmods.com/store/p9/Analog_Power Analog Power]||linear||+12V @ 2.5A, -12V @ 1.5A, optional 5V @ 1.0A/0.5A||toroidal attached to PCB||MIC29300, LM2990T-12, R-78E5.0||separate||||switching regulator for +5V||
|[[ModularSynth.ru]]||[http://www.modularsynth.ru/en/diy/low_cost_psu/ Low-Cost PSU]||linear||+/-12V @ 1A, 5V @ 0.5A||AC wall wart/separate transformer||7812, 7912, 78L05||not specified||[http://creativecommons.org/licenses/by-nc-sa/3.0/deed.en CC-BY-NC-SA]||||▼
|-
|
|-
▲|
|[[Moraydular]]||[https://github.com/vaeinoe/moraydular/tree/master/virta Virta PSU]||hybrid||+12V @ 1.5A, -12V @ >1A||switching wall wart||LM2991T, LM1086||12 header board with optional 7805, see [https://www.muffwiggler.com/forum/viewtopic.php?t=149598&start=all&postdays=0&postorder=asc Muff Wiggler thread]||unknown||under development||▼
|-
▲|[[ModularSynth.ru]]||[http://www.modularsynth.ru/en/diy/low_cost_psu/ Low-Cost PSU]||linear||+/-12V @ 1A, 5V @ 0.5A||AC wall wart/separate transformer||7812, 7912, 78L05||
|[[stroh]]||[http://synthcube.com/cart/index.php?route=product/product&product_id=590 modular power supply]||linear||+/-12V <!--@ 1.5A-->, 5V <!--@ 1.5A-->||toroidal mounted on PCB||LM317T,LM337T,LM1086||Detachable 2"x6" 12 header board with 5x10-pin Euro, 4x16-pin Euro, 8x6-pin Dotcom/MU and 8xMOTM/Frac headers.▼
||unknown||PCB only or full kit.||[https://www.muffwiggler.com/forum/viewtopic.php?t=97492&start=all&postdays=0&postorder=asc Muff Wiggler forum]▼
|-
|ModularSynth.ru||[http://www.modularsynth.ru/en/2014/07/18/regulated_psu_update/ Regulated Bipolar PSU]||linear||+/-12V @ 1.5A, 5V @ 1.5A||separate transformer||2xLM317, LM337||||[https://web.archive.org/web/20160412191857/http://creativecommons.org/licenses/by-nc-sa/3.0/deed.en CC-BY-NC-SA]||||
|-
▲|[[Moraydular]]||[https://github.com/vaeinoe/moraydular/tree/master/virta Virta PSU]||
|-
▲|[[stroh]]||[http://synthcube.com/cart/index.php?route=product/product&product_id=590 modular power supply]||linear||+/-12V <!--@ 1.5A -->, 5V <!--@ 1.5A -->||toroidal mounted on PCB||LM317T,LM337T,LM1086||Detachable 2"x6" 12 header board with 5x10-pin Euro, 4x16-pin Euro, 8x6-pin Dotcom/MU and 8xMOTM/Frac headers.
▲||
|}
== Notes ==
{{reflist|group=note}}
== References ==
Line 46 ⟶ 55:
== External links ==<!-- in chronological order -->
* [
* [https://www.
* [https://www.
* [https://www.
* [https://www.modwiggler.com/forum/viewtopic.php?t=148733&start=all&postdays=0&postorder=asc New Doepfer Power Supply A-100PSU3], Mod Wiggler forum, Oct. 2015
* [https://docs.google.com/spreadsheets/d/17qu-PkyJnjZf9YzhNYy7X7-d-lmZqhahyUW0YM1b2N0/edit#gid=0 The big eurorack PSU list], for a wider comparison both DIY and ready made
=== Other useful power projects ===
* [https://web.archive.org/web/20160403005206/http://www.cgs.synth.net/modules/cgs73_bus.html Power Bus Board], Ken Stone's Modular Synthesizer
* [https://web.archive.org/web/20160402193654/http://www.cgs.synth.net/modules/cgs63_psd.html Power Supply Delay], Ken Stone's Modular Synthesizer
[[Category:Eurorack]]
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Latest revision as of 19:09, 19 December 2022
A good clean power supply unit (PSU) is the most important part of a modular system. A proper linear power supply and good distribution makes a big difference to the stability and sound quality of the system.[1] Switch-mode power supplies are smaller, lighter, and much more efficient than linear power supplies but produce more noise, (above audio range) on their output.[2]
Safety
Use a RCD. Mains voltages can kill and capacitors in disconnected power supplies can still deliver quite a jolt. Unless you're qualified to work with mains electricity, ready made external transformers are safer.
Comparison
Brand | Model (& web page) | Type[note 1] | Volts & max. Amps | Transformer type | Main components | Distribution | Licence | Comments | Further info |
---|---|---|---|---|---|---|---|---|---|
AI Synthesis | Eurorack Power Supply | linear | +/-12V | 12V AC wall wart | 7812, 7912 | PCB and components kit. | build guide, schematic | ||
Befaco | Power bus DIY kit | linear | +/-12V @ 0.7A, 5V @ 0.3A | internal switched PS +/-15V DC unit | LM317TL, LM337TL, 78M05 | Regulators are on a bus with 14 headers | CC-BY-SA | PCB and components kit. | schematic, assy instructions, Eagle files |
Clicks & Clocks | PSU | linear | +/-12V @ 1.2A | toroidal attached to PCB | LM317, LM337 | Separate bus with 14 headers | With permission of Doepfer | Modelled on Doepfer A-100 PSU2 | A-100 Technical Details |
Dintree | D112 Power Supply | switching | +/-12V @ 0.625A, 5V @ 0.5A | external 12V DC switched brick | VBED15, 7805 | 12 headers on PSU PCB | for non-commercial use only | Uses ready made DC to DC converter | schematic |
EFM Synthesizers | 3501 Power Supply | linear | +/-12V @ 1.5A | external transformer | LM317, LM337 | can be adapted | |||
Eowave | DIY PSU | switching | +12V @ 1.5V, -12V @ 0.7A,[3] 5V @ 0.5A | external 15V 4A DC switched brick | 2xLM2576T, 7805 | Separate bus with 15 headers | proprietary | PCB and components kit | Mod Wiggler forum |
Erica Synths | 12V bipolar 1.5A PSU | linear | +/-12V @ 1.5A | toroidal attached to PCB | LM317, LM337 | Separate bus with 14 headers | proprietary | PCB, hardware and components kit | Mod Wiggler forum |
Frequency Central | FC Power DIY | linear | +/-12V @ 0.5A, 5V @ 0.1A | 12V AC wall wart | 7812, 7912, 78L05 | 1 header or solder leads to PCB | PCB only. Inexpensive solution for small Euro system. | FC Power Build Doc | |
Frequency Central | Routemaster DIY | linear | +/-12V @ 0.5A, 5V @ 0.1A | 12V AC wall wart or 12V centre-tapped transformer | LM317, LM337, 78L05 | 12 Euro, MOTM, or Dotcom headers integrated on PSU PCB | PCB only. Inexpensive solution for small Euro system. | FC Routemaster Build Doc | |
L-1 | 12V bipolar linear PSU+busboards | linear | +/-12V @ 1.5A | toroidal attached to PCB | 2xLD1084, 7805 | Two 12 header bus PCBs with kit. +5V regulator mounted on bus off 12V rail | Full kit for PSU + two busboards | Mod Wiggler forum | |
Electronic Things… And Stuff | Mini Dual Power Supply | linear | +/-12V @ 0.5A | 12V AC wall wart | 7812, 7912 | Separate kits for 8 or 14 header bus | |||
Metatronic Mods | Analog Power | linear | +12V @ 2.5A, -12V @ 1.5A, optional 5V @ 1.0A/0.5A | toroidal attached to PCB | MIC29300, LM2990T-12, R-78E5.0 | separate | switching regulator for +5V | ||
MFOS | Adjustable LM317/LM337 1.5A Supply | linear | +/-12V @ 1.5A | separate transformer | LM317, LM337 | free for non-commercial use | PCB or PCB and components | ||
MFOS | Wall Wart Power Supply | linear | +12V @ 1A | external AC wall wart | LM78XX/LM79XX or LM78LXX/LM79LXX | free for non-commercial use | PCB or PCB and components. Not Eurorack but included for completeness. | ||
ModularSynth.ru | Low-Cost PSU | linear | +/-12V @ 1A, 5V @ 0.5A | AC wall wart/separate transformer | 7812, 7912, 78L05 | CC-BY-NC-SA | |||
ModularSynth.ru | Regulated Bipolar PSU | linear | +/-12V @ 1.5A, 5V @ 1.5A | separate transformer | 2xLM317, LM337 | CC-BY-NC-SA | |||
Moraydular | Virta PSU | linear | +12V @ 1.5A, -12V @ 1A | switching wall wart | LM2991T, LM1086 | 12 header board with optional 7805, see Mod Wiggler thread | under development | ||
stroh | modular power supply | linear | +/-12V , 5V | toroidal mounted on PCB | LM317T,LM337T,LM1086 | Detachable 2"x6" 12 header board with 5x10-pin Euro, 4x16-pin Euro, 8x6-pin Dotcom/MU and 8xMOTM/Frac headers. | PCB only or full kit. | Mod Wiggler forum |
Notes
- ^ Trying to decide what's linear or switching, the transformers are mostly interchangeable so instead going by the type of regulators.
References
- ^ Best Eurorack Power Supply (PSU) for your buck?, Mod Wiggler forum, 23 Feb 2014
- ^ "Understanding the Importance of Low-Noise Linear Power Supplies" (PDF). Archived from the original (PDF) on 2012-12-19. Retrieved 2016-03-04.
- ^ LM2576/LM2576HV Series SIMPLE SWITCHER® 3A Step-Down Voltage Regulator, p.20
External links
- Linear Power Supply For Modular Synth Application., Electro-Music forum, Jan. 2012
- Linear Power Supplies!, Mod Wiggler forum, Jun. 2013
- Power supply battle: TipTop,Elby,Doepfer,MakeNoise,4ms etc, Mod Wiggler forum, Oct. 2013
- Best Eurorack Power Supply (PSU) for your buck?, Mod Wiggler forum, Feb. 2014
- New Doepfer Power Supply A-100PSU3, Mod Wiggler forum, Oct. 2015
- The big eurorack PSU list, for a wider comparison both DIY and ready made
Other useful power projects
- Power Bus Board, Ken Stone's Modular Synthesizer
- Power Supply Delay, Ken Stone's Modular Synthesizer