On 05/15/2012 02:25 PM, Marko Mäkelä wrote: > On Tue, May 15, 2012 at 01:18:05PM +0200, silverdr@wfmh.org.pl 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. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2012-05-15 13:00:48
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