Power supply output voltage adjusting circuit

• Main Authors: WANG CHANGYE, GAO CUNTONG
• Format: Patent
• Language: Chinese; English
• Published: 05.02.2014
• Subjects: CONTROLLING; PHYSICS; REGULATING; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES

The invention discloses a power supply output voltage adjusting circuit, which comprises a single-chip microcomputer, a digital keyboard, an electric quantity detection chip, a signal processor and a voltage feedback circuit, wherein the digital keyboard and the electric quantity detection chip are connected to the single-chip microcomputer; the signal processor is connected to the output end of an active low-pass filter; the voltage feedback circuit is connected to the output end of the signal processor; the output end of the voltage feedback circuit is connected to the input end of the electric quantity detection chip; the output end of the electric quantity detection chip is connected to the single-chip microcomputer. According to the power supply output voltage adjusting circuit, a set value of the output voltage can be adjusted through the digital keyboard and is input into the single-chip microcomputer, the single-chip microcomputer is used for outputting a square-wave signal of which the duty cycle is