ImaginAsian
05-24-2002, 03:59 PM
Our member, FromBadTraverse has penciled up a very excellent how to article on changing the fan speed for computer applications.
http://www.bitbenderforums.com/reviews/fbt_fan/disembl_fan.jpg
The DC Brushless Fan has a permanent magnet mounted on the fan blades. This is caused to rotate by the action of electromagnet coils that are pulsed so that the electromagnetism rotates and influences the permanent magnet. Generally this is done with IC's these days that have the feedback of a Hall effect sensor. This generates the high-speed pulses and directs them through the feedback to the right place.
Read the rest HERE (http://www.bitbenderforums.com/reviews.php?op=showcontent&id=9)
http://www.bitbenderforums.com/reviews/fbt_fan/disembl_fan.jpg
The DC Brushless Fan has a permanent magnet mounted on the fan blades. This is caused to rotate by the action of electromagnet coils that are pulsed so that the electromagnetism rotates and influences the permanent magnet. Generally this is done with IC's these days that have the feedback of a Hall effect sensor. This generates the high-speed pulses and directs them through the feedback to the right place.
Read the rest HERE (http://www.bitbenderforums.com/reviews.php?op=showcontent&id=9)