Voltage regulation and current regulation DC power supply with anti-lightning and anti-surge function

Abstract

The invention relates to a voltage-regulating current-regulating direct-current power supply with lightning-stroke-prevention and surging-prevention functions. The direct-current power supply comprises a power supply input protection and voltage regulating and changing unit, a rectification filtering unit and a lightning-stroke-prevention and surging-prevention protection unit. The output end of the power supply input protection and voltage regulating and changing unit is connected with the input end of the rectification filtering unit. The output end of the rectification filtering unit is connected with the lightning-stroke-prevention and surging-prevention protection unit. The direct-current power supply further comprises a manual / automatic voltage-regulating current-regulating unit which is connected with the power supply input protection and voltage regulating and changing unit. According to the voltage-regulating current-regulating direct-current power supply with the lightning-stroke-prevention and surging-prevention functions, the manual / automatic voltage-regulating current-regulating unit is arranged and can manually and automatically regulate direct-current electric energy of voltage and currents; a lightning-stroke-prevention and surging-prevention unit is further provided so that electric discharging of three discharging circuits can be achieved at the same time, damage to a power supply due to various direct lightning strokes, reaction thunder and surging currents can be effectively prevented, the electric potential of an output circuit can be effectively clamped, and therefore the purpose of protecting electric equipment against lightning strokes can be achieved.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a voltage-regulating and current-regulating DC power supply with functions of lightning protection and surge protection. Background technique [0002] At present, most industrial and civilian power supply environments are relatively harsh, especially in hot summer, when lightning causes greater harm. Generally, lightning rods on buildings can only prevent direct lightning strikes, while induced lightning and pulse voltages generated by strong electromagnetic fields However, it can sneak into the room and endanger the electrical equipment. The existing circuit protection equipment is not perfect enough to effectively protect the electrical equipment and prevent various lightning from damaging the electrical equipment. The power supply is the basis of power supply for electrical equipment. The existing power supply includes AC power supply and DC power supply. Power supply ...

AI Technical Summary

Problems solved by technology

However, the circuit structure it adopts is relatively complicated, and it is only suitable for AC regulated power supply.

[0004] In the prior art, none of the DC power output lines has a strong lightning protection and surge protection function, and cannot have both manual and automatic voltage regulation and current regulation functions, which cannot meet the requirements of many industrial, civil, and laboratory applications. Functional requirements for lightning protection and anti-surge DC power supply in fields such as

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