Power supply circuit and electric equipment

• Main Authors: ZENG WEIPENG, ZHOU YUANPENG, WANG JINMING, JIANG YISHAN, XIE WEI
• Format: Patent
• Language: Chinese; English
• Published: 13.09.2022
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a power supply circuit and electric equipment, and relates to the technical field of power electronics. The power supply circuit comprises a power supply input module used for converting an accessed external power supply into a first power supply; the capacitor module is charged by a first power supply; when the switch module is in an on state, a second power supply is provided by utilizing the discharge of the capacitor module; the control module is used for outputting a first signal to the switch module when external power supply input is detected; the detection module is also used for outputting a second signal to the switch module when the external power supply input is not detected and the power supply signal is detected; the first signal is used for controlling the switch module to be in an off state, and the second signal is used for controlling the switch module to be in an on state; and the power output module supplies power to the control module and the load by using the firs