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Need Help powering 6 Computer Fans Externally Answered

I'm building a large monitor riser for my desk that I will also slip some of my networking equipment into and laptops. As such I'm trying to install cooling, 6 fans in total (4x 10mm 5v Fans) and (2x 92mm 12v Fans). These fans would normally go inside the chassis of a computer, and are DC powered, however, that won't be the case here.

Ideally, I'd like to find a single practical power supply that would then connect to a 4 pin fan controller board and would power the 2 fans at full 12v and the other 4 at their 5v settings in as smallest of a form factor available.

Does anyone have any recommendations on the parts for something like this and where to obtain them? I saw another topic from 6 years ago where they alluded to a 12v 1A Variable PSU but that was for powering 1 Fan, and I have a bank of fans.


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11 months ago

Just take a 12V powersupply and feed it directly to the 12V-Fans.
Now take something like https://www.banggood.com/DC-DC-9V12V-to-5V-4A-Min... and power that also from teh 12V. Feed the output to the 5V-Fans.
If you want the fans to be adjustable in speed, slap in something like https://www.banggood.com/DC-5V-To-35V-5A-Mini-Mot... for each fan (If each fan has to be adjusted individually) or for each voltage-Output (if all 12V have same adjustable speed, but different from all 5V-fans which are also adjustable as a block).


Reply 11 months ago

Nothing more to add... :)