2023 Author: Philip Bishop | [email protected]. Last modified: 2023-08-25 07:54
- Advantages and Disadvantages of Chinese LED Bulbs
- Build quality of LED fixtures
- What are the problems with Chinese LED bulbs
- Why LED bulbs blink
- Why LED bulbs burn out
Since domestic manufacturers are in no hurry to bring the production and sale of LED lamps to a fundamentally new quality level, the only way out for consumers is to order lighting devices abroad. LED lamps from China are in especially high demand, although they have dubious build quality.
Advantages and Disadvantages of Chinese LED Bulbs
The main advantage of Chinese LED bulbs from China is their low cost. Delivery from the Middle Kingdom is cheaper than from any other country. In recent years, Chinese LED equipment manufacturers have been paying particular attention to quality. Accordingly, the quality of LED lamps from China is often not inferior to those of European products.
Modern Chinese technologies, according to which the development of schemes for the operation of LED equipment, is still far from the limits of its own capabilities. Experts believe that no more than 10% of the actual potential is currently involved. And this is at the time that the average resource of the LED is 100 thousand hours of operation.
Build quality of LED fixtures
Large Chinese manufacturers most often care about the quality characteristics of their products:
- use high quality components to manufacture products;
- use research laboratories;
- carry out quality control of each LED lamp separately.
In small companies, the situation is different. Small-scale LED manufacturers in China are making savings on both components and labor. As a result, the price of such products is much lower, as well as the quality of LED lamps. Sellers assure that the lamp will last a long time, but knowing about the quality of Chinese LED bulbs, this is not the case. The juice of the service depends on the quality of the parts and often the lamps do not last even a year
To assess the build quality, it is enough to disassemble a few Chinese LED lamps. When disassembling, especially close attention should be paid to the presence of glue on the board and the quality of the soldering. By the last criterion, you can judge the quality of the entire product. It will also not be superfluous to make sure that there are no chips and cracks on the LED lamp housing. Poor assembly of such lighting products often leads to failure of part of the LEDs and the lamp as a whole. Thus, the answer to the question why LED bulbs blink and why LED bulbs burn out is obvious. It's all the fault of the poor quality assembly.
In addition to significant savings on LEDs, the Chinese often try to cut costs by using electrolytic capacitors in the driver circuit, which dry out completely after a year of operation.
Since one of the most significant parameters of LED lamps is the heating temperature of the diode elements. If the heat dissipation is not good enough, overheating and subsequent destruction of the diode crystal occurs. This leads to a decrease in the brightness of the lighting fixture.
As you know, the lifespan of LEDs is calculated in hours. So, if the number 25 thousand hours is indicated on the lamp, this means that after the specified period, the lamp will shine 30% less intensely. But this standard applies exclusively to branded products. Many Chinese manufacturers indicate a service life of 25 thousand hours, forgetting to mention that the quality of lighting with LED lamps will then fall not by the standard 30%, but by all 50%.
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What are the problems with Chinese LED bulbs
The most common problems with Chinese LED lamps are the following:
- the power of lighting devices is lower than that declared by the manufacturer;
- the brightness of the lighting fixtures is lower than that declared by the manufacturer;
- flickering light bulbs;
- uncomfortable lighting color
- inability to work with switches working with an indicator;
- small lighting angle.
If we take the characteristics and disadvantages of the most common LED lamps from China on the world market and arrange them in a single summary table, the result will look like this:
The table clearly demonstrates that none of the bulbs under consideration provides the luminous flux designated by the manufacturer. The best of the options turns out to be no more than 84%, and the worst - about 30%. As for the color rendering index CRI, according to the norm, this figure should be more than 80. All LED lamps from China do not reach this figure. This means that if you illuminate a room with such lighting fixtures, the colors of all objects in the room will be highly distorted. As many as seven lamps are generally not suitable for use in residential premises, since they have a high flicker rate. With switches equipped with indicators, according to the table, only three lamps work correctly, the rest are very weak, since their electronics include only two capacitors and a diode bridge.
Some of the lamps considered have a completely uncomfortable lighting color. Most of the shades have a shade that is simply unrealistic to confuse with the color of a standard incandescent lamp.
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Why LED bulbs blink
If you look at the LED bulb through a video camera, you will find that it is quite strongly present. This means that a poor-quality driver was used in its manufacture. Blinking the lamp can significantly affect your vision. Therefore, if you are unlucky enough to purchase low-quality lighting equipment from China, it is better to screw them into rooms where you do not spend very much time. For example, to the toilet, hallway or common corridor. For living rooms, it is better to use better quality lamps with lower Hz oscillations.
The easiest way to determine the quality of an LED light bulb is to use a camera or phone. When hovering on the screen, stripes appear, if the stripes are invisible, then the lamp is good and has 100 hertz.
Why LED bulbs burn out
The main reason for the burnout of LED lamps (as well as their flickering) is the use of a poor-quality driver by the manufacturer. Often, a similar problem turns out to be associated with a breakdown of the transformer, which is responsible for lowering the voltage that the lamp receives. It often happens that light elements burn out. You can find out the reasons why LED strips burn out here.
To avoid certain problems with Chinese LED lamps, pay attention to the characteristics. You should not chase after cheapness and choose products from those manufacturers who can give a guarantee of the quality of their products. The right choice of LED lamp will delight you for many years and will not disappoint.
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