For brush less DC type "Tiny Cooling Fan" motor, in which a current wound coil according to the relative position of the rotor and the stator and constantly changing direction. So the fan control circuit is used to monitor the relative position of the above, and switching the direction of current at an appropriate point in time, the control circuit so that the fan normal operation plays an important role in the function. "Tiny Cooling Fan" control circuit also provides a variety of advanced features such as speed control, speed data output, and security mechanisms such as over current protection. In the context of a particular application, the fan must be able to meet the requirements of electromagnetic interference test specifications to ensure "Tiny Cooling Fan" does not cause interference with other electronic equipment components during operation. For some applications it is extremely important issues, our engineering team for this technology has many years of experience and full ready, ready to solve problems together with our customers to provide the best design solutions and products.