Patent ID: 9206809
Filing Date: 2015-12-08
Classification: F04D,Y02B

Abstract:
1. A method for controlling a fan using a control device, the control device comprising a control unit, a first signal generation unit and a second signal generation unit each connected to the fan, the control unit having a first signal output terminal and a second signal output terminal, the method comprising: enabling the first signal output terminal to output a control signal to the first signal generation unit, using the control unit; generating and outputting a speed adjusting signal to control the fan, in response to the control signal, using the first signal generation unit; detecting whether a speed measurement signal is received from the fan using the control unit; and if no speed measurement signal is received, enabling the second signal output terminal to output the control signal to the second signal generation unit using the control unit; generating and outputting the speed adjusting signal to control the fan, in response to the control signal, using the second signal generation unit.