Frequency modulation type constant-voltage output power supply based on overvoltage protection circuit

Abstract

The invention discloses a frequency-modulated constant-voltage output power supply based on an overvoltage protection circuit, which is characterized in that: a transformer T, a diode D1, and a triode VT5 are respectively connected to the primary side inductance coil L1 and the primary side inductance coil L2 of the transformer T It is composed of a base trigger circuit connected with it, an overvoltage protection circuit connected with the same-named end of the primary side inductance coil L1 of the transformer T, and the like. The present invention can monitor the input voltage and adjust the voltage in real time to keep the voltage within a constant range. In this way, even if the mains fluctuates, the present invention can also output a constant voltage; the present invention can also adjust the voltage frequency Adjustment is made to make the frequency of the output voltage more stable, so that the present invention can better supply power to electronic equipment. At the same time, the invention can automatically disconnect the circuit when an overvoltage occurs in the input voltage, so as to protect the system from being damaged by the overvoltage.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a frequency modulation constant voltage output power supply based on an overvoltage protection circuit. Background technique [0002] With the rapid development of electronic technology, there are more and more types of electronic equipment, which brings great fun to people's life. Any electronic equipment is inseparable from a reliable power supply. At present, the functions of electronic equipment are becoming more and more diverse, and their requirements for power supply are also getting higher and higher. However, the current power supply has low stability and is easily affected by fluctuations in mains power, resulting in unstable output voltage and seriously affecting the service life of electronic equipment. Contents of the invention [0003] The purpose of the present invention is to solve the defect of low stability of the current power supply, and provide a frequency modul...

AI Technical Summary

Problems solved by technology

However, the current power supply has low stability and is easily affected by fluctuations in the mains power supply, resulting in unstable output voltage and seriously affecting the service life of electronic equipment.

Images