Patent ID: 8905721
Filing Date: 2014-12-09
Classification: F01P,F04D,G06F,H02P,Y02B

Abstract:
1. A fan, comprising: a fan-driving microcontroller disposed within the fan for receiving an input signal, determining an output signal according to the input signal, the output signal being used to adjust a rotation speed for driving a fan motor, wherein the relation between the rotation speed and the input signal is a curve mathematical function, and the fan-driving microcontroller controls the rotation speed along with the variation of the input signal according to a function operation or reference table, wherein the relation between the input signal and the output signal is changed from a first curve function to a second curve function when the input signal has exceeded a specific value, wherein the first curve function has, sequentially, a first value, a first apex and the specific value, and the second curve function has, sequentially, the specific value, a second apex and a second value; wherein the first apex and the second apex exhibit values higher than the specific value; and wherein the first apex exhibits a lower value than the second apex.