Cooling Fans Explained
19 May 2009
Ever wonder why those small fans inside your computers continue to run even after years of use, thanks the bearing less motor for that which is actually derived from hard drive technology that uses precision motors to spin the fan without any contact points. If you’re technically inclined and are familiar with brush less motors, they’re the same principle with bearing less motors that spins the fans of our computers. They rely not on mechanical bearings but a sleeve bearing that has less friction compared to mechanical bearings that wear out in time. They will break down eventually for they do burn out or some part can fail, but overall, they are capable of serving us for many years.
These fans seemingly float on their bearings thanks to stepper motor similar technology that uses alternating magnetic fields to spin the fan blades at dizzying speeds. Smart fans have complex speed regulating electronics that var\ies the fan speed according to the cooling needs of the computer’s microprocessor. Used in conjunction with temperature sensors on the processor and motherboard, they can indeed cool a sizzling computer in no time. So if you spot a seemingly sluggish one on your desktop, pay close attention so you can get it replaced immediately and help keep the computer running in tip-top shape.
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