ben1990 Posted January 19, 2010 Report Share Posted January 19, 2010 Hey guys I have a 13.8 volt, 12 amp power supply in my room running a car stereo hooked to the PC, The fan that was in it failed (50mm) so I swapped it for a new one and it is much noisier than the old one, its still a 50mm, but is a little thicker than the old one and seems to move more air. A good thing yeah, knowing that it wont overheat......but the noise is really annoying.....The stereo only draws around 4 amps at peak volume, if that......so was thinking about a thermal fan controller, thermistor on the heatsink controlling a transistor switch.....adjustable of course.....was just gonna put a switch on the fan but i am worried about frying it of course......fitting the larger fan needed the removal of one heatsink fin alreadyAny ideas? Quote Link to comment Share on other sites More sharing options...
Hero999 Posted January 19, 2010 Report Share Posted January 19, 2010 The simplest solution of course is to buy a fan with a lower noise rating.Here's a circuit for a light/dark detector, if the LDR is replaced with a thermistor, it can be used as a thermostat.http://www.silicontronics.com/index.php?action=ezportal;sa=page;p=17 Quote Link to comment Share on other sites More sharing options...
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