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Normally-on LED lighting power supply system with signal feedback circuit

A technology of LED lighting and signal feedback, applied in lighting devices, electric light sources, electrical components, etc., can solve the problems of unstable power supply of LED lamp power supply system, easy damage of LED lamps, shortened life of LED lamps, etc., so as to avoid the occurrence of current. The effect of fluctuation, avoiding flicker, reducing maintenance and replacement costs

Inactive Publication Date: 2016-08-24
CHENGDU YUEXIANGXIANG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Normally-on LED lighting power supply system with signal feedback circuit
  • Normally-on LED lighting power supply system with signal feedback circuit

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Effect test

Embodiment

[0016] Such as figure 1 As shown, the always-on LED lighting power supply system provided with a signal feedback circuit includes a diode bridge rectifier U1, and the positive pole is connected to the positive output terminal of the diode bridge rectifier U1, and the negative pole is connected to the negative output terminal of the diode bridge rectifier U1. An input rectification circuit composed of connected capacitors C1, wherein the two input ends of the diode bridge rectifier U1 form the power input end of the input rectification circuit; it also includes a base adjustment circuit connected to the input rectification circuit after being connected to each other, Chip control circuit, drive output circuit and signal feedback circuit.

[0017] The tuning circuit is composed of transistor VT1, transformer T1, sliding rheostat RP1, diode D1, diode D2, capacitor C2, capacitor C3, capacitor C4, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, and resistor R6.

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Abstract

The invention discloses a normally-on LED lighting power supply system with a signal feedback circuit. The normally-on LED lighting power supply system comprises a diode bridge rectifier U1 and an input rectification circuit, wherein the input rectification circuit comprises a capacitor C1, a positive electrode of the capacitor U1 is connected with a positive output end of the diode bridge rectifier U1, a negative electrode of the capacitor U1 is connected with a negative output end of the diode bridge rectifier U1, two input ends of the diode bridge rectifier U1 form a power input end of the input rectification circuit, and the normally-on LED lighting power supply system also comprises a base adjusting circuit, a chip control circuit, a driving output circuit and the signal feedback circuit which are connected with one another and then are connected with the input rectification circuit. Through the normally-on LED lighting power supply system with the signal feedback circuit, provided by the invention, the power supply stability of an LED lamp is improved, the current impact to which the LED lamp is subjected during running is 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 signal feedback 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 shortening...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/37
Inventor 罗文彬
Owner CHENGDU YUEXIANGXIANG TECH CO LTD