| 摘要 |
An electric power generating device includes an air ventilation device which rotates due to air flow and an electric power generating module is connected to the air ventilation device and co-rotated with the air ventilation device. A control module is connected to the electric power generating and an auxiliary power supply. An output module is connected to the control module and an electric appliance. The rotation of the power generating module generates electric power by the air ventilation device to power the appliance. When the air flow is not less than expected, the auxiliary power supply takes over to power the appliance.
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