| 摘要 |
A control system for a direct-current fan, comprising a switching power supply (106) and a control circuit (108), wherein the switching power supply (106) is connected to a direct-current motor (104) of a direct-current fan, and outputs a direct current to the direct-current motor (104); the control circuit (108) outputs a working state signal to the switching power supply (106); the switching power supply (106) outputs a corresponding working voltage to the direct-current motor (104) according to the working state signal; and the control circuit (108) controls a working state of the direct-current motor (104) according to the working state signal. A corresponding standby voltage can be set for the control system for a direct-current fan according to a standby power which is, for example, lower than 0.5W, such that an overall standby power of the direct-current fan can be lower than 0.5W; and meanwhile, a use of an electronic switch is avoided, and the service life of the control system is guaranteed. Also disclosed is a direct-current fan. |
