Computer fans to AC-to-DC power adapter

I picked up 4 computer fans at .25 A with a 3 pin and the power adapter 12V 1A 2pin

Now how exactly do I make this all work? I was told I might be able to find a 3 pin adapter which would be better than splicing

I spliced mine

Should have done that when you are at my place. I have all the parts and tools for you to do that. What does you 12V ac-dc connector looks like? Are they the same type except the amount of pins.

I went to buy the fans right after leaving your house. lol





I ordered a 3 pin male connector online as well

Wow your fan is expensive!

What do you want to do exactly? If you just want to turn the fans on, you can insert the lead-out from the ac/dc to the fan. pin 1 is negative and center pin is positive. If you have extra solid core jumper/patch wire, you should use those so that the lead-out of the ac/dc won't accidentally touched.

Aqua Pro Builder said:

Wow your fan is expensive!

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Wow, just noticed that also, that's crazy

Also, FYI, the reason why there is 3 wires on the fan is because the 3rd wire is a speed sensor which usually tells computer how fast they are spinning. Only 2 of the 3 wires are needed, and if you wire it backwards, the fan will just spin backwards so you will just need to reverse it.

And you could have gotten the fan much cheaper online, usually a few bucks depending on size. The same for the AC/DC adapter

I have 6 of these fans can I run them all off of 1 power thingy lol ill take pics tomorrow

You could have gotten CPU fans that are power by USB for half the price and then get either a surge protector with USB charger ports or AC Power Charger Adapter for each fan. I use those for my tanks. They work great because you can adjust the fan speed also.

Mattl22 said:

I have 6 of these fans can I run them all off of 1 power thingy lol ill take pics tomorrow

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Double check how many "A" each fan uses and add them up. If the total is slightly below the rating of your PS, then it's OK. If I remember correctly, the one in the pic is .15-.18A

It's 2 of these from a 2 seperate led units
And 4 of these which r built into canopy

Can I run all them off 1 power supply I have 1 ill take a pic

Mattl22 said:

Can I run all them off 1 power supply I have 1 ill take a pic

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I can only see the amps on the 2nd pic, which is .1Amp (which is same as 100mA)
You just need add all the Amps up, and make sure the power supply has minimum of that much Amps

Ok thanks Ming ill Check that out!
Where can I buy the low voltage wire for this?

This is power supply I have how do I wire all these fans to this?

This should run 8 of these fans right? I'm running 6

yes, thats correct you can run up to 8 since most fans are 100ma


damn, corsair for an aquarium fan. some 1 is rolling deep:squid:

Mattl22 said:

This should run 8 of these fans right? I'm running 6

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If they're all the same fan, yes based on the 800mAh pic above.
Not sure about that exact plug, but I just spliced into the wires and connected the fans and used some 22 gauge wire and electrical tape from radioshack to extend them to the desired location. If you want it more secure, add some sodder and soddering iron, or wire nut if you're lazy and sure it won't be near humidity.

Viplok what do you mean is it a good fan I bought this set up used and they came with the hood!

Ming thank you ill use wire nuts lol