Re: Fan for a 128DCR

I just ordered that fan from newegg.



On Tue, May 15, 2012 at 8:54 AM, Justin <shadow@darksideresearch.com> wrote:

> In my post on lemon there is a photo showing where to tap 12V.  The fan
> linked in my write up runs at 8dBA at 12V and comes with little rubber
> grommets that pull through the mounting holes once you bore them out
> slightly, so the fan is suspended on the rubber and does not easily couple
> its vibrations to the chassis. At 10CFM it should be able to turn over the
> air inside the case several times per minute, which should be a vast
> improvement over the original convection cooling.  In a quiet room it is
> inaudible.
>
> Justin
>
> On May 15, 2012, at 9:57, silverdr@wfmh.org.pl wrote:
>
> >
> > On 2012-05-15, at 14:45, Gerrit Heitsch wrote:
> >
> >>>> The most quick'n dirty approach that worked surprisingly well was to
> >>>> drive 12V fans with 5V (or 6-7 when 5 was too little to give the fan
> >>>> good spin) and still having enough airflow to keep the temperature at
> >>>> reasonable level with enormously reduced noise.
> >>>
> >>> Yeah, connect the fan between the 12V and 5V rails, and if it fails in
> >>> short circuit, it will take all the 5V circuitry as collateral damage.
> I
> >>> am not sure if that has ever happened to anyone, though. It would not
> be
> >>> a big loss on PC hardware, but we are talking C= valuables here. :-)
> >>
> >> If you want to be on the safe side, grab a LM317, set it up as an
> adjustable regulator and hook it between +12V from the PSU and the fan,
> then adjust to the desired noise level. Should be possible for less than 2
> Euros if you don't have all the parts handy already.
> >
> > Exactly. If 5V was not enough (which wasn't that often as it might seem
> to be) I always derived desired voltage from the original 12.
> >
> > --
> > SD!
> >       Message was sent through the cbm-hackers mailing list
>
>       Message was sent through the cbm-hackers mailing list
>


       Message was sent through the cbm-hackers mailing list