running a pc fan outside of a case

[Alex Dean]

OK.  I have a nice big fan I need to wire up.  I have a few power bricks 
lying around I could use, and I need some advice about which to pick.

Fan : 12V. 3 speed. 0.24A/0.2A/0.13A
http://www.antec.com/pdf/manuals/tricool_install.html

Power supplies available :
1. 12V, 1000mA
2. 12V, 600mA

Both of these seem a little underpowered.  Will that just make the fan 
spin slower, or do I really need to get a 12V,0.24A power supply from 
somewhere?  I could also go back and buy a smaller fan.

alex

fouldragon at aol.com wrote:
> The most you can reliably get out of a USB port is 500mA.
> 
> Typical fan draw varies wildly by size and performance level.  
> 100-200mA  at 12 volts is typical for 80/92/120mm "PC case" fans, but 
> then there are a few rated as high as 900mA at 12 volts.  Of course, 
> the 5v versions will draw more current for an equivalent performance 
> level.
> 
> 
> 
> -----Original Message-----
> From: Nadim Hoque <nadimhoque at gmail.com>
> To: 'Main PLUG discussion list' <plug-discuss at lists.plug.phoenix.az.us>
> Sent: Wed, 20 Aug 2008 9:25 pm
> Subject: RE: running a pc fan outside of a case
> 
> 
> 
> In terms of getting extra air or cooling your laptop more
> efficiently, just yet a laptop cooler. Pick one up at fry’s for 20 
> bulks. The
> fan’s power is directly fed via the USB cable. Thermaltake has this one 
> laptop
> cooler that uses this weird past, but it’s supposed to cool down the 
> laptop
> passively. I don’t know the power usage of the USB ones, but do keep in 
> mind
> that you might be powering 2 fans at once. This way is far safer and 
> cheaper
> and don’t forget easier to just use a laptop cooler. Again Fry’s has 
> them; just
> ask a employee and they should guide you.
> 
> 
> From: plug-discuss-bounces at lists.plug.phoenix.az.us
> [mailto:plug-discuss-bounces at lists.plug.phoenix.az.us] On Behalf=2
> 0Of Eric
> Cope
> 
> Sent: Wednesday, August 20, 2008 3:14 PM
> 
> To: Main PLUG discussion list
> 
> Subject: Re: running a pc fan outside of a case
> 
> 
> 
> 
> 
> 
>  
> 
> 
> 
> 
> 
> 
> exactly. Get a 5V DC supply and
> solder it to the power lead on the fan. At 5 volts the fan will be 
> slower and
> quieter. If you need more air movement, get a 12V DC supply. The fan 
> will move
> faster, but be louder.
> 
> 
> 
> Depending on your notebook, you may have some fun experimenting with 
> heat
> pipes...
> 
> 
> 
> Eric
> 
> 
> 
> 
> 
> 
> On Wed, Aug 20, 2008 at 3:00 PM, Alex Dean <alex at crackpot.org> wrote:
> 
> 
> 
> 
> 
> 
> Eric Cope wrote:
> 
> 
> 
> Outside of that, some solder, a wall wart, and a 4-5" PC
> fan would make a great air mover...
> 
> But given you lack of hardware knowledge, go with the above 
> recommendations.
> 
> 
> 
>  
> 
> 
> 
> 
> 
> 
> well, i do know how to solder.  just haven't done
> anything inside a pc case since i was in highschool, and have never 
> attempted
> to do anything with a power supply.  but wiring a fan to a power brick i
> could do...
> 
> 
> 
> a wall wart is one of those bricks that take up all the space on the 
> power
> strip, right?
> 


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