running a pc fan outside of a case

[Charles Jones]

http://3btech.net/clgcpusbpodu.html

eculbert wrote:
> Wife has a laptop that needed a fan, got a thermalake one that sits under the vent hole in the bottom of the laptop. I made a tilted plywood base years ago for it. Works fine. Was $14 at Fry's.
>
> Ed/ke7feg  ....Hurry up November...enough heat so far!!
>
> Did I mention, 2/23/07 the FCC dropped all cw (AKA Morse code) testing for any class of license as a ham? Just pass the written exams.
>
>
> --- On Fri, 9/5/08, Alex Dean <alex at crackpot.org> wrote:
>
>   
>> From: Alex Dean <alex at crackpot.org>
>> Subject: Re: running a pc fan outside of a case
>> To: "Main PLUG discussion list" <plug-discuss at lists.plug.phoenix.az.us>
>> Date: Friday, September 5, 2008, 10:21 AM
>> 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?
>>>
>>>       
>> ---------------------------------------------------
>> PLUG-discuss mailing list -
>> PLUG-discuss at lists.plug.phoenix.az.us
>> To subscribe, unsubscribe, or to change your mail settings:
>> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss
>>     
>
>
>       
> ---------------------------------------------------
> PLUG-discuss mailing list - PLUG-discuss at lists.plug.phoenix.az.us
> To subscribe, unsubscribe, or to change your mail settings:
> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.PLUG.phoenix.az.us/pipermail/plug-discuss/attachments/20080905/51bf98bb/attachment.htm