In recent years, led bulbs have been widely used in our daily lives. They are not only environmentally friendly, but also have no pollution to the environment. The service life is also very long. On a global scale, whether urban lighting or home lighting is the best choice. The following small series for everyone to introduce what is the advantages and disadvantages of led bulbs and led bulbs .
What is a led bulb
The so-called led bulb is a kind of lamp that uses light-emitting diodes as the main material to make lamps for outdoor use. Its ability to emit light is mainly because we use weak power to make the pn junction of the semiconductor achieve the luminous effect. In the case of certain positively biased voltages and currents, the electrons injected into the P and N regions are radiated and recombined to emit light. Compared with traditional bulbs, LED lamps have the advantages of high luminescence purity, low power consumption, and long life.
Led bulb advantages
1, led bulb long service life. In general, the led bulbs are very long compared to other general lamps and can reach 50,000 hours of use.
2, led light bulb can adapt to various conditions of the environment, the general energy-saving lamps if it is in the frequent opening and closing state is very easy to bad, and led light bulbs can adapt to this high state of the work environment.
3, led light bulb production, fusion of the world's most advanced light production technology, its light source is a surface light source, this light source can increase the light emitting surface, very affinity with people's eyes.
4. There is no mercury, lead and other harmful substances inside the led bulb, and it has no pollution to the environment.
Led bulb disadvantages
1, although the LED light's light decay is low, but this is basically a high-power led light, and the low-power led light light attenuation is still relatively large.
2. The light color of the Led lamp is white light. Due to individual defects in the manufacturing process and lens fitting errors, it is easy to form a yellow circle when used, which will affect the effect of the light.
The advantages and disadvantages of LED energy-saving lamps
LED energy-saving lamps have been increasingly welcomed by consumers due to their features of significant power saving, long service life, no stroboscopic effect, no noise, and a wide range of soft light operating voltages. However, there are many LED energy-saving lamps on the market, and the quality is uneven. How to buy your own satisfied products in the array of energy-saving lamps in the lighting store? Through the "five look" can identify the advantages and disadvantages of energy-saving lamps, as described below.
A look at packaging and trademarks
The national mandatory requirements LED lighting manufacturer's products on the packaging marked the following: rated voltage, voltage range, rated power, rated frequency. Generally speaking, the trademark of high-quality products is of good quality and printed with clear characters and is not easy to fall off. Wipe with soft and damp cloth, the mark is clearly legible, it is not easy to wipe off, and there are manufacturers' trademarks and related certification marks. Fake and shoddy products have poor print quality, fuzzy fonts, and are easily erased. There are no manufacturer's trademarks and related certification marks.
Second look at the appearance of LED lamps
The real LED energy-saving lamp is a three-color tube, white tube, covered by hand to see, more white. In addition, from the lamp point of view, more than one lamp can be put together to compare the better shape and size of the lamp tube are mostly machine bending forming, mostly large-scale production of products. Product consistency is good, quality is easier to ensure, and interchangeability during maintenance is better. Of course, there must not be cracks, looseness, and traces of cracks in the interface. In the process of installation and dismantling, there should be no loosening of the lamp head and a smashing phenomenon.
The plastic shell of the lamp must be selected as the kind of engineering plastic flame retardant. Ordinary plastics are easily deformed and flammable, and are prohibited from being used in the production of energy-saving lamps. From the surface, it is easy to distinguish between the two. The latter surface is smooth and shiny, and the former has a frosted glass-like texture.
Three to see the temperature at work
LED energy-saving lamps under normal operating conditions, the temperature rise should be very low. Otherwise, the life span of LED energy-saving lamps is very short. At the same time, when the energy-saving lamp is lit, there is rapid flashing, or it is very dazzling, indicating that the energy-saving lamp has quality problems.
Four look start performance
LED energy-saving lamps start with two characteristics: First, the higher the temperature is easier to start; Second, the light is turned off, will not flash. In addition, it is worth mentioning that many LED energy-saving lamps are very dark, which is unfavorable for lamp life. LED energy-saving lamps should have power circuits and PCB boards inside.
Five to see the interference situation
In China, electromagnetic compatibility is a project that electrical appliances must pass. However, this project is very complex. When users buy lights, they look at the package to see if they have passed the national electromagnetic compatibility test. Second, they use a medium- and short-wave radio. When the lights are working, put the radio in the vicinity. The lower the noise is, the lower the noise is emitted at the medium and short wave radio stations, the better the electromagnetic compatibility of the lamp under test.
Editing summary: The advantages and disadvantages of what led bulbs and led bulbs are introduced here. For more information, you can follow this site information.
Sulfanilic Acid
CAS Number: 121-57-3
Possible CAS #: NA
Molecular form.: C₆H₇NO₃S
Appearance: White to Off-White Solid
Melting Point: >297°C (dec.)
Mol. Weight: 173.19
Storage: Refrigerator
Solubility: DMSO (Slightly, Heated), Water (Slightly, Heated)
Stability: No Data Available
Category: Amines, Aromatics, Sulfur & Selenium Compounds
Boiling Point: No Data Available
Applications: Sulfanilic Acid (Sulfadimethoxine EP Impurity D) is a toxic metabolite of Tartrazine (T007700). Used as Ehrlich`s reagent, for detecting of nitrites. Antibacterial.
Sulfanilic Acid
Hydrogen Peroxide,Sodium Polyacrylate,Aminobenzenesulfonic Acid,Sodium Silicate
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