| 摘要 |
PROBLEM TO BE SOLVED: To operate a system normally, without causing a motor to malfunction by rapidly driving another motor within effective time for operating a fan, when the motor fails by providing a multi-motor structure control circuit and controlling the multi-motor structure. SOLUTION: A rotary speed signal is outputted to a control circuit by a first motor, a switching signal is outputted to a second motor, when it is detected that the rotary speed signal has failed by the control circuit, and the second motor is started according to the switching signal, and as a result achieving the aim of standby operation of the multi-mode structure. |
