Step-down power supply circuit of series voltage stabilizing diode

• Main Authors: LIU MINGJIE, GU GUOHUI
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2023
• 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 utility model provides a series voltage stabilizing diode voltage reduction power supply circuit, which relates to the technical field of switching power supplies and comprises an output voltage processing circuit, a pulse control circuit, a feedback circuit, a sampling circuit and a voltage output end. The output voltage processing circuit is connected to the power grid commercial power, and outputs direct current at a voltage output end after processing the power grid commercial power; the feedback circuit is connected between the pulse control circuit and the sampling circuit, the pulse control circuit is electrically connected to the output voltage processing circuit, and the sampling circuit is connected to a voltage output end; the feedback circuit comprises an optocoupler U2, a voltage stabilizing diode ZD1, a controllable precision voltage stabilizing chip U3 and a capacitor C4; the beneficial effects of the utility model are that the power supply is realized through a simpler circuit structure, t