LED safe power supply circuit

Abstract

The invention discloses an LED safe power supply circuit comprising a voltage reduction module, a rectification module, a filtering module, a photoelectric conversion module, an electric energy storage module, an automatic switching module, a voltage stabilizing circuit, a buffer circuit and an LED lamp. The LED safe power supply circuit is characterized in that the voltage reduction module is connected between 220V alternating current and the rectification module. The voltage output end of the rectification module is connected with the filtering module which is also connected with the automatic switching module. The photoelectric conversion module is connected with the electric energy storage module. The LED safe power supply circuit is simple in structure and less in parts and components and adopts two power generation modes of commercial power and solar energy power generation and uses solar energy firstly. Commercial power supply is automatically switched on when solar power supply is insufficient. Besides, the circuit has the voltage stabilizing function for the two power supply modes, and gradual light-up and gradual fade-out of the lamp can be realized by using the conduction characteristics of the capacitor and the thyristor so as to have the advantages of low cost, convenient use and stable performance.

Description

Technical field [0001] The invention relates to a power supply circuit, in particular to an LED safety power supply circuit. Background technique [0002] As the negative effects caused by the global greenhouse effect continue to appear, all countries in the world regard energy conservation and emission reduction as an important issue that must be considered in their own economic development. LED lighting technology is exactly what emerged in this context. An emerging energy-saving technology. At present, LED lighting products have been applied to daily life, with the rapid development of LEDs. Compared with the traditional white light LED light source, the traditional light source has the advantages of long life, solid-state lighting, high luminous efficiency, mercury-free environmental protection, and earthquake resistance. It will become the third-generation light source in the future and will bring another revolution in the field of lighting. The LED lamp controller has a l...

AI Technical Summary

Problems solved by technology

Compared with the traditional light source, the white LED light source has the advantages of long life, solid lighting is not easy to damage, high luminous efficiency, mercury-free environmental protection, earthquake resistance, etc. It will become the third generation of light source in the future and will bring another revolution in the field of lighting. Most of the LED lamp controllers have single functions, and it is easy to generate a large current when it is turned on, which will cause serious heat generation of the lamp, so it needs to be improved.

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