What? Why? A simple, but useful one-day project – a laboratory PSU extender. Bench PSUs are almost always bulky, ugly and take a lot of precious space. For my usual synth-related workflow they most valuable features like current limiting and variable output voltage are not used very often – mainly during first circuit startup. Then […]
Nobody reads labels It must have happened, I just waited. When I was enjoying playing Bomberman in another part of the city, my girlfriend decided to hit some tunes on my old, trusted Microkorg. When I returned home, she seemed scared. I asked, what happened. She replied, something happened to my synthesizer, it behaves strangely. […]
Around the beginning of October 2015 I’ve got an oportunity to go for a synthmeet to show my new SDSV modules. The problem was I got no PSU or a modular case. I had only a week to DIY something and started with very simple mini PSU project, based on Doepfers A-100 MNT. As I […]
If you are into eurorack modular synths, this one is a must. Every device works better with power supplied. If you buy eurorack power supply ribbon cables for your own, the cost varies from 2 to 6 dollars. They are very easy to make, so… hammertime! (…and yes, I know the ribbon cable on the […]
Tetsuo eurorack power supply indicator was my first eurorack module and it detemined the graphics for my entire modular system. It was inspired by “Akira” movie stadium scene, when Tetsuo, sitting on the concrete armchair, sets free his power. To be specific, I made two versions of Tetsuo – one with power socket and one without it. […]
One day I decided to move my modular drum synth into bigger case. The main reason was my girlfriend wanted to use my previous Ikea Rast style case as an balcony table. I had no choice. The plans The design is based on Doepfers A-100 Low Cost 9U case. I made few “improvements” to […]
Some eurorack modules still use +5 V voltage busboard rail. If your PSU doesn’t supply it, you need to get a 5 V adapter (or get a new PSU). Doepfer “low cost” adapter costs around 15 euro. My alternative is much cheaper – project is very simple and all parts costs about 1 euro (but […]
There is no modular synth without busboards. My design is based on Doepfers A100-BUS. It is simple, cheap easy to make. Same as Doepfer, mine has CV and GATE buses – thus 16 pin power connector. Schematic is very simple, but you have to do it before PCB design. Nothing fancy here, 14 2×8 pin […]
This article was updated slightly on 21.05.2018 and includes filtering capacitors change and some output voltage measurements. Introduction Every modular synth needs a power supply (except systems containing only blanks and Giskies 12 HP Bottle Openers). Switched power supplies sometimes cause problems (when you have a lot of small modules, all with input power […]
