The Eurorack SMPS is the most powerful power supply I designed.
Unfortunately, the PSU you just bought isn’t adequate for your Eurorack system?
It’s common to be confused by the “-V” label.
Yes, “-V” on a PSU is a “negative” output, but only compared to the positive output. Your synth needs more!
So, what is the difference between “-V” and “ground”? How to select and use a proper power supply for your Synth?
Continue reading Ground is Not your Negative Rail
The SMPS (Switched Mode Power Supply) is a Eurorack, panel mounted, PSU project.
Continue reading Switched Mode Power Supply, first tests
If you want to power up your Mini Dual Power Supply, you need to supply it with an AC voltage on its input.
You can either use a simple tranformer or, safer and easier to manage, use a AC/AC wallwart adapter.
It’s not easy sometimes to make distinction between an AC to DC adapter and an AC to AC adapter. They share the same form factor, the same look and feel. But there are clear indications to help you determine the type of each one.
Here’s a quick comparison between the two types with two example closeup pictures, one AC/DC adpater and one AC/AC adapter:
Continue reading Choosing a suitable adapter for the MDPS
I made an update on my MDPS quite a few months ago but did not update the blog accordingly…
Here are the modifications and additions for the version 2.2 :
Continue reading Mini Dual Power Supply – Update to 2.2
After my first Compact Power Bus, I decided to go bigger and I designed a 14 connector Eurorack Power Bus.
Continue reading Eurorack Power Bus – 14 Connectors
Linear regulation. +12V / -12V /+5V. Up to 1A.
An other great Youtube video by Afrotechmods.
The basics of how transformers work, where to shop for step down mains transformers, and how to wire one up to mains voltages.
Here comes the next 2015 circuit update: Mini Dual Power Supply version 2.1!
Continue reading Mini Dual Power Supply – Update to 2.1