Questions about case fan modding.
Bookmark this page:
 Yahoo!
 Google
 Windows Live
 del.icio.us
 digg
 Netscape
|
|
|||||||||||||
|
Posted by Holy@Moses.com on January 20, 2008, 12:41 am
Please log in for more thread options ordinary household electrical outlet and then be able to attach your 90mm or 120mm case fan to it and use it that way? The electronic device I wish to cool using the casefans does not have anything like the plug outlet like your typical motherboard does. If there are no such adaptors, can someone recommend a method to get these fans to work as I would like to? Thanks. | |||||||||||||
|
Posted by Bill on January 20, 2008, 5:44 am
Please log in for more thread options Why not just use an A.C. fan? http://coolingfan.stores.yahoo.net/ac1225.html Bill | |||||||||||||
|
Posted by kony on January 20, 2008, 11:10 am
Please log in for more thread options On Sat, 19 Jan 2008 22:41:14 -0700, "Holy@Moses.com" <Holy
Moses> wrote:
>Are there any adaptors which will have you plug the adaptor in your
>ordinary household electrical outlet and then be able to attach your >90mm or 120mm case fan to it and use it that way? > >The electronic device I wish to cool using the casefans does not have >anything like the plug outlet like your typical motherboard does. > >If there are no such adaptors, can someone recommend a method to get >these fans to work as I would like to? Thanks. One option is an AC-DC supply plugged into the wall AC outlet. A typical wall wart like you probably have powering many of your consumer electronics devices would work, though you will have to determine if you want full speed fan operation or to target a bit lower voltage and if the power supply is unregulated you will need to account for that in the resultant voltage the fan sees since some projects don't need particularly high airflow. You haven't mentioned the particulars of this project which make it more difficult to recommend the best alternative, but whichever route you take it would require buying mating connectors from the PSU to the fan, to substitute some other pair of mating connectors for both PSU and fan, or direct wire it whether that mean splicing some wires or soldering to a PCB, etc. Depending on the electronic device, it may have some power subcircuit(s) suitable for powering the fan. A multimeter and general assessment of the circuits should tell you if there is any place power can be tapped, and if the voltage starts out too high but within reason, a current limitor or voltage regulator might be placed in series with the fan. Basically yes in general it's possible to do what you want but we dont' have enough info to determine what to do most easily or quickly, nor what related tools you may have or ability to do some things like soldering and measurements with a multimeter. If tapping into the existing device's power seems beyond what you want to do, mention the fan's specs like voltage, current, RPM, whether you need a lot of cooling from it or not, and whether you have any spare wall-wart AC-DC supplies lying around that you want to use or whether you'd need to purchase one. | |||||||||||||
|
Posted by PeeCee on February 1, 2008, 9:36 pm
Please log in for more thread options "Holy@Moses.com" <Holy Moses> wrote in message
> Are there any adaptors which will have you plug the adaptor in your > ordinary household electrical outlet and then be able to attach your > 90mm or 120mm case fan to it and use it that way? > > The electronic device I wish to cool using the casefans does not have > anything like the plug outlet like your typical motherboard does. > > If there are no such adaptors, can someone recommend a method to get > these fans to work as I would like to? Thanks. If you are talking about a standard PC case fan then all you need is a mains AC to DC plug pack from your local electronics store. Read the voltage and current specs off the fan and get an adaptor with the same output voltage and the same or greater current ability. Alternatively connect the appropriate number of batteries in series. Using rechargeables will reduce the running costs quite a bit. Paul. | |||||||||||||
|
Posted by kony on February 1, 2008, 10:48 pm
Please log in for more thread options On Sat, 2 Feb 2008 15:36:29 +1300, "PeeCee"
>"Holy@Moses.com" <Holy Moses> wrote in message
>> Are there any adaptors which will have you plug the adaptor in your
>> ordinary household electrical outlet and then be able to attach your >> 90mm or 120mm case fan to it and use it that way? >> >> The electronic device I wish to cool using the casefans does not have >> anything like the plug outlet like your typical motherboard does. >> >> If there are no such adaptors, can someone recommend a method to get >> these fans to work as I would like to? Thanks. >
> > >If you are talking about a standard PC case fan then all you need is a mains >AC to DC plug pack from your local electronics store. >Read the voltage and current specs off the fan and get an adaptor with the >same output voltage and the same or greater current ability. > >Alternatively connect the appropriate number of batteries in series. >Using rechargeables will reduce the running costs quite a bit. > >Paul. If that AC-DC adapter is unregulated (as many are) it will tend to float above the rated voltage. Also, the average current a fan uses is typically lower than the peak rated on the label. Therefore, consider the following example which are real parts I've grabbed and am measuring with a multimeter: 12V, 500mA generic unregulated adapter Fan rated as 12V, 0.14A Result is the fan gets 14.7V, and while many 12V fans can tolerate this as it's not that much higher, it will be addt'l noise and wear on the fan. IMO, for a typical 12V fan using an unregulated 5V AC-DC adapter is often the best choice for low noise, or a 9V adapter to get closer to a 12V result. When the above fan is powered by that adapter, | |||||||||||||
> Are there any adaptors which will have you plug the adaptor in your
> ordinary household electrical outlet and then be able to attach your
> 90mm or 120mm case fan to it and use it that way?
>
> The electronic device I wish to cool using the casefans does not have
> anything like the plug outlet like your typical motherboard does.
>
> If there are no such adaptors, can someone recommend a method to get
> these fans to work as I would like to? Thanks.
>