Switching power supply capable of controlling two-gear voltage switching outputting

• Main Authors: PENG HUA, CHEN HENGLIU
• Format: Patent
• Language: Chinese; English
• Published: 12.09.2017
• 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; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses a switching power supply capable of controlling two-gear voltage switching outputting. The switching power supply comprises a transformer, a secondary rectification filter circuit, a change-over switch, and a control unit. To be specific, the transformer has one primary winding and two same secondary windings that are connected in series. The secondary rectification filter circuit consists of a first rectification filter unit and a second rectification filter unit that are connected with the two secondary windings; and the output voltage of the second rectification filter unit doubles that of the first rectification filter unit. The change-over switch has a first gear and a second gear; the first gear enables the first rectification filter unit to be connected to an output interface; and the second gear enables the second rectification filter unit to be connected to an output interface. The control unit can receive an external remote control signal and controls gear switching of the ch