Normally-on LED illumination power supply system equipped with detection protection circuit

Abstract

The invention discloses a normally-on LED illumination power supply system equipped with a detection protection circuit. The normally-on LED illumination power supply system comprises an input rectifier circuit consisting of a diode bridge type rectifier U1 and a capacitor C1, wherein the positive electrode of the capacitor C1 is connected with the positive output end of the diode bridge type rectifier U1 while the negative electrode of the capacitor C1 is connected with the negative output end of the diode bridge type rectifier U1; the two input ends of the diode bridge type rectifier U1 form the power supply input end of the input rectifier circuit; and the normally-on LED illumination power supply system also comprises a base regulation circuit, a chip control circuit, a driving output circuit and the detection protection circuit which are mutually connected and then are connected with the input rectifier circuit. By adoption of the normally-on LED illumination power supply system equipped with the detection protection circuit provided by the invention, the power supply stability of the LED lamp is improved; current surge on the LED lamp in the operation can be well avoided; and the service life of the LED lamp is greatly prolonged.

Description

technical field [0001] The invention belongs to the field of lighting power supply, and specifically refers to a constant-bright LED lighting power supply system provided with a detection and protection circuit. Background technique [0002] In today's buildings, there is basically an underground space for storing materials or parking vehicles. The traffic in the underground space is small. The use of LED lighting systems can reduce the power consumption of lighting in the underground space, thereby achieving the goal of saving money. Purpose. However, the service life of the existing LED lighting system is not long, because the lighting system needs to run for a long time, so the LED lamp is easy to be damaged, and the average service life of the LED lamp in the system is only 2-3 years. The main reason for the damage of the LED lamp is that the power supply system is unstable, and the LED lamp often has a current impact when the power is supplied, which leads to a sharp s...

AI Technical Summary

Problems solved by technology

However, the service life of the existing LED lighting system is not long. Because the lighting system needs to run for a long time, the LED lamp is easy to be damaged. The average service life of the LED lamp in the system is only 2-3 years

The main reason for the damage of the LED lamp is that the power supply system is unstable, and the current impact of the LED lamp is often generated when the power supply is supplied, which leads to a sharp shortening of the life of the LED lamp.

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