A question on fans Answered

p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0.0cm; font-size: 11.0pt; font-family: Calibri , sans-serif; } span.EmailStyle15 { font-family: Calibri , sans-serif; color: windowtext; } *.MsoChpDefault { } div.WordSection1 { page: WordSection1; } Hi,   Would this setup work ?   Using four standard pc fans, if I was to mount them opposite each other, blowing inward, in each of the spigots (side ports) of the fitting in the pic attached and blocking up one end, would I get a useful air flow out of the open end, or would the fact that they are blowing toward each sort of cancel each other out.   If it makes any difference the main body of the pipe is around 110mm.

Question by Squibo   |  last reply


Fade in fan

Hi! This might seem like an odd question but I need a fan to "fade in" for an art project I'm working on. That is I need a circuit that makes the fan spin up slowly to full revs. Is it possible to build some simple circuit that can manage this task? And if so is the case could someone please send me a plan for it? The fan is a standard CPU-fan (12V). Thanks for your support!

Topic by feldreich   |  last reply


Heat fan....

I need a way to heat up the air around the fan, so it will blow hot air twords me. i was going to try a thermoelectric cooler. but i cant find one, so is there any other way? And it has to be school safe, no fire involved

Topic by Zayk   |  last reply



Experiment on whether and when a stuck up fan will break into flame.

Let us consider a typical home electric fan, and we put some obstacle to prevent the fan propeller from turning, then we switch on the fan on the fastest speed; will the fan and when eventually break into flame because the propeller cannot rotate? Have there been experiments to see what will happen? Marius de Jess

Question by Marius de Jess   |  last reply


can a 12v dc pc fan use a 16v dc adapter?

Can a 12v dc pc fan use a 16v dc adapter?

Question by tigerz   |  last reply


my fan ( on the processor) does not seem to be getting any power. i ! Answered

How do i check it and or replace it? its an old p3 i am fixing for a student friend. I was trying to partition a new hard drive for it when i realized it was way hot. fan did not appear to be operating. I do have another old system outside i might be able to use for parts. thanks for any advice here!

Question by redwoodschef   |  last reply


What can i do with non working electromagnet ceiling fans?

I've got a lot electromagnetic ceiling fans that don't work any more of which i don't what's the difference, if anybody can teach me of how will convert it to anything instead of throewing it

Question by jovenhatsjr   |  last reply


Ive got a 12V PC fan with stripped wires, whats the best way to get it to work again? Answered

I was hoping for a battery powered fan, but im not so sure.

Question by Z1ggy   |  last reply


Laptop fan dead

The Fan died in my old XP laptop. I would like to glue another fan on the bottom directly under the bad fan and power it by USB. Has anyone done this?

Topic by auto13142828   |  last reply


computer fan on 220v?

Hi can i connect computer fan to 220v? if i can what else parts i need to use?

Question by tealk   |  last reply


Supplying amperes on fan? Answered

Hey, I'm just wondering if I were to plug in two fans rated at 12V .1A to a 12V 1A power supply, would the extra .80A will overload out the fans? Or will the fans only draw what it will need? And for other simple devices like LEDs, will this apply?

Question by BIO Wolf   |  last reply


Combining PC with.....A FAN!

This idea just popped into my brain last nite.Why not use strong automobile fans to cool the PC?Just mount it on the panel(geek points for duct tape)and off u go!Most engine fans run on 12VDC now and a pc has that,then SPLICE THE TWO TOGETHER!Advice and flaming will be appreciated

Topic by Derin   |  last reply


PC Fan help?

Hi! Got a Dell 8600 Inspiron When I boot, the fan briefly turns twice. Begins to start, but stops abruptly. Doesn't do anything else. I think the fan needs to be replaced, but if it is faulty, why is it able to start briefly? I noticed this b/c it was getting very hot and I noticed a very very very faint beeping sound coming from around the area of the fan. Random beeping, no pattern to it.  Any advice/suggestions appreciated. Thanks!

Question by transistorguy   |  last reply


360 fan motor? Answered

I have a junk Xbox 360, or 3, and I am wondering about the fans. First off, does anyone know how to get the motor out without destroying anything? Secondly, does anyone know if these motors are permanent magnet motors or not? And how would I be able to test it without a voltage meter? would a small flashlight light work?

Question by NativeSs   |  last reply


Usb fan for a Modem

Hello. I wan to add a fan to my modem(NET FASTER IAD 2) I wan to use the usb that is on the modem(for adding a network printer or a network disk). I used a usb cable but when I measured the voltage at every cable combination the maximum I got was 0.30v between green and red? Why that? computer usb's have 5v.... Any help

Topic by DJman230   |  last reply


Laptop Fan Help!

So i bought a 2.8ghz laptop from a guy for $30i fixed EVERYTHING, invested about $200 of my hard-earned moneyand now the CPU fan wants to crap out on me >: ( the fan works, the circuitry that controls the fan has failed (on the mobo)so what i am asking is that you help me!i need to be able to regulate the 12v that comes from the battery into lower voltage, with a variable power supply, https://www.instructables.com/id/How-to-Build-a-Bench-Top-Power-Supply/I need someone to do the calculation so that i can regulate voltage form 4.5v - 12v what would be the resistance values?VOUT = 1.25 * ( 1 + ( R2/R1 ) )

Topic by Sandisk1duo   |  last reply


Wall of case fans?

Hey guys, I have been thinking up ideas all night for wind power. I've been messing around with a decent dc motor I found in a printer, but I'll have to wait till tommorow to make some kind of proper blades for it. I however, have an interesting idea. I was thinking of using just one case fan by itself to generate power (see video below). But then I got to thinking, what if I made a wall of case fans in my back yard? and wired them all up in parallel or something. I measured the output of one case fan I have here and at most I could get was 0.100v DC turning it by hand as fast as I could. I come along so many case fans and throw them out all the time, so why not re-use them?? I'm not sure winter time would be the best time to put something like that out, but I think it would work.

Topic by Punkguyta   |  last reply


Laptop Fan Buzzing? Answered

Hello Everyone, Need some advice here. I have noticed a slight buzzing sound in my fancy gaming laptop's fan recently. Its only audible when the fan is on its highest speed and then you wouldn't notice it if your volume is up. I'm fairly certain the problem is that the fan is slightly off balance. Here's why: 1). I completely dismantled the laptop and cleaned it of all dust and particles, so its not clogged or impeded in any way. 2). The sound stops if you tilt the laptop approx 30 degrees in any direction. (The sound actually gets louder until the 30 degrees is reached, then it completely stops). My question is: What should I do about it? Is it really much of a problem? Do I need to replace it? If I do, my warranty literally expired 1 week 1/2 ago, is there anything I can do about that? I feel cheated by the timing personally.

Question by transistorguy   |  last reply


Wall of PC Case Fans?

Hello guys, sorry if this is the wrong section but, I was thinking of making a DIY fan out of PC case fans to keep myself cool in the summer. I've tried a number of fans in the past, but they don't seems to be very good. I usually put them right next to an open window to draw cold air in. I was thinking of making some kind of rig like in the video below, only without the bitcoin mining computer. I got the idea from this video and from when I was messing around with the fans in my own PC. I was chancing the speed of the fan for the PCI cards and noticed that it could get really cold if ramped up a bit. ) I was thinking of using 9 identical 120mm or 140mm fans, preferably ones that can be used with a fan controller. Here is a few of the things I need help with. How will I power the whole thing? What kind of cabled will I need? Could I use a fan controller to power all 9 fans? Can I even hook up 9 fans to a fan controller? Maybe I could use 2 fan controllers or something? What brand of fans should I use? How will I attach the fans together? Cable ties like in the video? Maybe I could make a makeshift wooden stand to hold them upright.

Topic by BionicSammich   |  last reply


Computer Power Supple to Power 2 Computer Fans

I have a wine fridge with two fans (computer fans)  that cool a massive heat sink, but the temperature gauge is faulty so they constantly power on and power off. I was hoping to remove the existing controller and power the existing computer fans (that are already mounted) with an old Computer Power Supply to have them constantly on. Any ideas?

Topic by AlC23   |  last reply


How can I power my fans externally?

Hi, I'm trying to run my 12v DC fans externally. Is there a way to do this? Is there such thing as a power supply specifically for 12v fans? I'm thinking the only way to do this is to cut up a 12v power supply that I can get from the shops. Is there another way to power them? Is there anything that can externally supply the correct voltage (12v) to these fans? Thanks, really appreciate any help.

Question by Tickles14   |  last reply


Transformers, how do they work?

Im trying to make my cheap laptop cooling stand use stand alone power. ie, not using the USB power. i obviously cant wire up that little fan motor to standard 120v. SO, i have this transformer here, i pulled it out of an electric razor. It makes sense that i could use this in my fan project. it has six, now de-soldered, pins, three on each side. how would i wire up the neg and pos of the power supply and the fan to this part? PS. due to my webcam, it make the images blurry. the serial is: 4222 018 47541 SA-0101 If that helps any

Question by Scarrmakerz   |  last reply


Server Airflow Help?

As you can see here, I just got 3 new blow fans for my server I'm making. But I'm not making it in a server box/case, or even in a computer case, I'm making it in a plastic shelving unit. I have 5 fans in total; the three blow fans, and a medium and a small computer fan. I'm completely new to the airflow concept, so I will need some guidance.ideasBelow are some things that I think will improve airflow, but you tell me if it's good or not.1. leaning motherboard -Is making the motherboard "lean" so the bottom is semi exposed a good idea for airflow? Or would the air not circulate as well?2. "chaining" blow fans -Would "chaining" the blow fans together (putting them in sequence) make a twice as powerful stream of air?questions1. Should air be sucked out of the box, or blown in?2. What would the ideal airflow solution be?Thanks!-Shadow Ops

Question by Arbitror   |  last reply


Home Theater exhaust system

Short version thermostat controlled home theater exhaust. using trip method for computer psu to power fans. will it work if so any suggestions on thermostat and how to wire it. i am very basic right now on electronic wiring long version explained out I am in need of a exhaust system for my home theater. i have to much going on. 1 receiver, dvr, xbox 360, home theater pc/gaming machine, playstation 3, xbox 360 hd-dvd rom, and all the charging for the controllers and the logitech 880 remote, I also have a LG tv which can get a bit warm all this is housed in one of those hometheater entertainment center that has two towers on either side of a lower base for the tv where the devices go under and gets very warm. the towers are smaller for dvds. now that i have explained my set up i will explain what i am to do. i want to mount 2 fans behind each device .... there is no glass in front of device so for know everything will exhaust. i am using computer fans prolly 4inch ones. now here is what i am wandering i want to have the system controlled by a thermostat and i need suggestions on what to do. i am using the old trip method where u put one side of a wire in the psu green hole and one in the black and that turns it on with one simple switch i want to put a thermostat in the middle. does anyone now if this is possible if so what thermostat would u recommend and is there anything else you might include to increase cooling thanx so much for your time

Topic by tdpolo26   |  last reply


Is it good idea to replace laptop's fan by fan of cooler pad ?

There are nasty fan inside of my laptop. The fan is loud and sound is nasty and works always (its such model of laptop), so I want to remove bottom of the laptop's corpus and may be top of the cooling pad and use the pad instead of internal cooler (which I will plug out). I have AMD. I think that it's may work because: fan inside laptop blows at radiator (which is on another end of copper pipe), not right at place where processors located. And I want big fan that will blow right at those part of cooling system where processors located. I'm not gonna remove copper pipe, just plug out default fan and use pad's instead so that it will blow at cooling system from the bottom. I'm gonna use pad with 220-250 mm fan. What do you think ?

Topic by RoS9   |  last reply


What fan can I replace this one with?

I've just took apart my noisy micro refrigerator, it's an insulin cooler that keeps medicine at a temperature of 2-8 degrees celsius. It's good apart from the noisy fans. Now I was confused when I took it apart as I'd never heard of a DC brushless fan before. So I'm now wondering what can I replace it with? Can I replace it with a standard fan that's the same size as it? Or do I have to replace it with another DC brushless fan of the same specs? I want to find a near silent replacement, will this be possible? Is it the fan that actually makes the noise? Here's a few pics of the fan and motherboard: http://oi61.tinypic.com/o8ij52.jpg http://oi62.tinypic.com/14dezqx.jpg Thanks, really appreciate any help.

Question by Tickles14   |  last reply


Replacing LEDs on a LED fan? Answered

If the LEDs are the same voltage, can i just cut the wires on the LED fan, and just simply re-solder the new LEDs onto the wires? I have been looking at several Instructables about replacing the LEDs on a fan, and they all have complicated re-wiring ideas..Can't you just simply replace the LEDs with the news ones?

Question by ramroids55   |  last reply


Arduino - 2 wire fan

I have 2 wire fan (5V 0.15A) and I want to connect it with arduino board. Is it safe to connect it directly to arduino? And if it's not how to control the fan? Do I have to put some resistors?

Topic by dkorisnik   |  last reply


What Is The Purpose Of a USB Fan?

I made some USB fan, and plugged it in. It worked. As I watched it spin around blowing a tiny bit of air out, I thought to myself, "What on Earth should I do with this thing?" Somebody tell me, what is there that this little fan can do?

Topic by extremegtafan   |  last reply


Is my cool fan broken?

My laptop gets very hot, and it was not in that situation before. It feels hotter, should I change a cool fan? Or just need to clean it?

Question by Peterfatima   |  last reply


Speed controlled industrial fan

Hi all, For an installation I need a speed controlled fan that I can control via a microcontroller. Is there any industrial fan that you know that allow to be controlled with eletrical signals rather than the usual manual control? thanks a lot!

Topic by amicoleo   |  last reply


Ceiling Fan for a Theatrical Production?

My theater group is doing Guys and Dolls for our spring production, and our director wants to have ceiling fans in a few of the scenes. Is there any way to create prop fans that can hang from a fly rail and rotate, but without being electrically powered? Thanks in advance!

Question by earningmyimaginears   |  last reply


USB power cooling fan?

Can my laptops usb port power a 12v .20A cooling fan if i hard wired it? I know it would be under powered, but it shouldnt harm my computer right?

Question by clayton993   |  last reply


Laptop Fan voltage booster

Hi, my laptop is overheating because the fan isnt fast enough. My idea is to build a small voltage booster to increase the fan voltage a small bit. It will be overvolting the 5v fan but i dont mind. For example, when idleing, fan voltage is at 3.5v and at full load its at 5v and i would like it to be 1-2v higher at both points WHILE still maintaining the variable control (spinning faster and slower as needed) Problem is, im pretty good at soldering but i dont know how to make one. Could anyone help with this project Thanks

Topic by ttg tricksh0tzz   |  last reply


intel pc fan problem? Answered

I have a intel fan having 3 wires green,black,yellow which of them can i use to on it which is vcc and ground

Question by robot1398   |  last reply


How to control case fans? Answered

Just recently i got a shiny new 3.2GHz dual core computer, but it has two case fans i have no control of. they use the 3-pin connector, and Speedfan 4.3 cannot specifically control them. i know that macs have smcfancontrol, but is there a program like that for pc?

Question by zack247   |  last reply


Computer fan wiring issue? Answered

I just bought 3..SONYMODEL SFF22C10 VDC 0.51 ADC BRUSHLESS FANs..from Princess Auto in the surplus section. It was just labled "Sony Blowfan", so I assumed that they were computer fans, so I could use them with my server I'm setting up. It turns out my server's motherboard doesn't have the correct outlet for the fans plugs. In fact, I haven't ever seen a fan with a plug as small as this is! I'm assuming that the red wire is positive+, the black is ground or negative-, and the white lets the motherboard control the speed. I will only need the + and -, I want the fan to go full blast all the time. It is only rated for 10 VDC, but could I hook up all three of the fans to one of the extra hard drive 12 VDC power cables (yellow and black wires)? Or do I need a resistor, with how much resistance? Also, so do I make the fan run full blast off of only power, when it needs the white wire to have a signal?This question has been answered! See if you can help me with the next step of my project.https://www.instructables.com/answers/Server-Airflow-Help/-Shadow Ops

Question by Arbitror   |  last reply


Cooling Fan Timer Circuit

I'm tying to setup a 12 volt 2.5 amp injector cooling fan in a car and I want the fan to turn on for X minutes right after the ignition key is OFF. I was looking at this programmable relay - https://www.amazon.com/Miniature-cycling-Cycling-Industrial-control/dp/B015Z2EQCU/ref=pd_lutyp_simh_1_3?_encoding=UTF8&pd;_rd_i=B015Z2EQCU&pd;_rd_r=5202NNSP2PM3EE5DZVTA&pd;_rd_w=SKMnb&pd;_rd_wg=rJ4Td&psc;=1&refRID;=5202NNSP2PM3EE5DZVTA Here is the website for that relay with instruction manual - http://www.3rdbrakeflasher.com/ I'm not sure if I need another relay and hook to 87a or if there is a better circuit I can make.

Topic by pphantom   |  last reply


Cpu fan for celeron D? Answered

I have a celeron d proccessor....i need to know if either of these or this would work....i dont really need the heatsink, as the old one works perfectly, so im guessing that they'll work, but i want to make sure...any and all suggestions are much appreciated !

Question by fwjs28   |  last reply


Slowing a noisy handheld fan?

I am trying to slow a battery-powered (two AA batteries) handheld fan. It's obnoxiously loud for my project, but slowing it to about half speed will help cut the noise. I think running a resistor somewhere in the circuit will do it (planning to lengthen the wires anyway, so physically adding in isn't the issue,) but frankly there's a reason I'm in art instead of engineering. I've looked at the online calculators, but they want the amperage of the motor, which I don't know. What kind of resistor do I need?  Or is there another way to slow or quiet it down?

Question by jblanc   |  last reply


New instructables fan forums

Hello, guys. looking at the slow loading of the forums and the system i made up a free forum for instructable users so that they can join up and make a big instructables community. So here is the link to the forums. Its new and empty now but i need all your support to make it grow, so go and post something. Click hereSo thanks alot and please come over.

Topic by arylic   |  last reply


RC ducted fan plane

My Mom recently aquired a new blender for christmas and I was able to salvage the very massive motor from it. it is a 120v 430w motor. I want to be able to make it remote control with an esc and some rc gear I have. I need help either creating one or somewhere to buy one that would work with this motor. I could also use arduino to control it if needed but would need a program. Thanks in advance for all help recieved.

Topic by itri45   |  last reply


Need help figuring out how much power to use. Answered

I am trying to power 2 small fans that each have an input of 12v DC 0.12A (120mA).  Do I need a 24v DC 0.24A (240mA) to power them both to max capacity?

Question by zkemppel   |  last reply


What is the difference between a hovercraft lift fan and a hovercraft propulsion fan? Answered

 I'm researching to build a hovercraft, and I am not sure what the difference is between a propulsion fan and lift fan.  I can find a hovercraft propulsion fan that requires 19 hp, but an engine like that is too expensive. The hovercraft lift fan only requires 11.9 hp, and I can afford an engine like that. So I was wondering if I could just use the lift fan as a propulsion fan, if I ever decide to build a hovercraft. I understand the difference in the fans' functions, but what is the difference in the fan itself? is it a different size, pitch or shape? ...All I really want to know is if I could replace the 'propulsion fan' with the 'lift fan'

Question by frankenboom   |  last reply


Possible to make firewire powered cooling fan vs. usb cooling fan?

Is it? I think I read that firewire 800 can provide MUCH more power, and if I could utilize that to power more powerful fans (as I only have 12v computer fans available at the moment, which usb can't provide enough energy to power at 5v).

Question by flio191   |  last reply




is there a way to reduce the power flow of the fan? Answered

Im making something using a fan and it shut my computer taking to much power from the usb is there a way to reduce the power flow of the fan?

Question by CarStalkerZ   |  last reply


How to make a usb cooler fan?

A cooling machine with a small compreser filled with carbondioxide

Question by f16phantom   |  last reply