MOAR power to fan?

gradyhawks · 5 Nov 2014 at 21:48

Hi!

I have one of these (for lols):

http://www.overclockers.co.uk/showproduct.php?prodid=FG-006-LA&tool=4

However, to look truly awesome it needs to spin just slightly faster... (then I get a cool ring effect instead of it changing all the time). I've it plugged into a fan header on the mobo running at full speed... but is there anyway to give it more power to make it spin maybe 10% faster?

Danny75 · 5 Nov 2014 at 22:29

Faster hamsters?

Mitzy · 5 Nov 2014 at 22:29

You want to overvolt/overclock your cooling fan? Only on OverClockers.

gradyhawks · 5 Nov 2014 at 22:34

Yeah

but not for performance, just for looks. If I could show you, you'd understand.

R400 · 5 Nov 2014 at 23:37

Block the airflow. That will load the fan and it might spin a little faster. Because magic.

Make · 6 Nov 2014 at 03:33

Turn 12V input into 13V somehow.

dtokez · 6 Nov 2014 at 03:54

You could use a step up regulator but it wouldn't be too simple if you are a novice with electronics

gradyhawks · 6 Nov 2014 at 11:07

I remember some of my Electronics A-Level, so potentially not a novice. Might be a fun little project, making a kind of super boost switch.

You willing to give a short idea as what I'd need to do at all?

Tealc · 6 Nov 2014 at 12:49

You can pick up prebuilt DC-DC boost converters for a couple of quid from our Chinese friends that should work out ok. Just make sure that they can handle the current the fan will demand.

I'd expect that overvolting the fan will also overvolt the spinning LED array and that may have some strange effects. Would be interesting to see the results though.

Before you invest though try hunting for a greater than 12v wall adaptor of some kind. You may find some 15vDC, 18vDC ones kicking about if you hoard stuff like me. You could also run a couple of 9v batteries in series to give you 18v.

dtokez · 6 Nov 2014 at 19:00

Yeah I would search the auction site for a adjustable boost DC DC that has a output range of > 12v. I would hack a molex power extension or something and try it with 12v in the input side, connected to a multimeter first while you set the pot to get the desired output voltage. I'm not sure I'd give the fan too much voltage, and I'd also look at supplying the brushkess motor and not the led array with > 12v. Does the led sequence use a microcontroller do you know?