Hi
I have zero experience with Brushless DC fans and how they are built. I have a DC PC fan with a extra pair of wires which allows connection to a thermistor for controlling the speed of the fan. I would like to make use of this fan for a project and want to know whether there is a typical schematic that explains the method used to control the fan's speed. Are most of these fans similar in topology where a somewhat universal schematic exists? My search efforts have not been fruitful, so if someone has any pointers as to the method of speed control operation, it would be appreciated.
Thanks