PC fan conversion - Page 2

totalzer01 · #11 09-26-2007, 05:24 AM

Once you've done that, get any 12v (output) adapter. DO NOT plug the fans into a socket or they WILL be permanently damaged. They are meant to be supplied with low-voltage DC (12v DC), not 110 AC.

Also notice the wires: Black to Black, Red to White. Don't forget to wrap electrical tape around the exposed wire.

I tried to take a picture of the fan working to show that it works fine, but every picture looked like it was standing still. All in all, takes about 3-5 minutes.

You can hook up a few fans together in this same manner. I'm no electrician, so I'm not sure exactly what number is safe to do. I'm doing two on one adapter and 3 on another.

chuckstoner12 · #12 09-26-2007, 01:15 PM

thank you man,
i wanted to use them for my grow but i didn't figure out how to wire them.
i tried to plug them to a 9 volt and a 12 volt battery thought but i figured out it would run out of power

totalzer01 · #13 09-26-2007, 03:46 PM

yeah a 9v will def not keep them running for very long.

here are some pictures of how i've used the fans in a small cab. the top 2 are to extract and the bottom 2 are intake. I'm going to add a 3rd extractor for a carbon scrubber later.

the back is pretty messy, but i just wanted to have the wire taped down so i wouldn't accidentally rip it out. All the exposed wire was taped before though.

hvc801 · #14 09-26-2007, 10:25 PM

I have also done four fans, but I placed two extraction fans on the top of the box and one on the left bottom side and one on the right bottom side intaking air.

natmoon · #15 09-26-2007, 11:43 PM

You can do this as well and is what i plan to do next so i can get my plants a bit closer to the 400watt hps.
Slightly different setup to what you guys are doing but if you did this on a 150-250watt hps it will help in confined spaces

AKASA 120mm Amber series 3pin Ultra quiet case fan

Korgage · #16 03-13-2008, 03:11 AM

I was thinking about connecting a dimmer switch to the fan so I can fiddle around with speed, incase my figures are slightly off. That way I won't have to buy another fan if my calculations are missing something.

Right now I know I need at least a fan capable of shifting 24cfm. But I'd like to buy one that can do a little more in case it has to compensate for things I haven't considered.

Later I'd like to connect all my equipment to an old laptop running some simple code that'll regulate the growroom environment. But that's overkill I think, for now. If I can figure out how to do the dimmer switch thing, I'd just need to keep figures on paper for at most 3 days to figure out the perfect speeds for my fans to keep temp and humidity where I want it.

So, anyone know where I can get a suitable dimmer, in the UK?

I thought Mapline would have something, but no luck.