What are the purpose of the electronic products aging?
Aging (Burn in) is a kind of environmental stress screening. But now a lot of companies have to “aging” the meaning of the word expansion, aging on the equivalent of environmental stress screening, environmental stress screening commonly known as aging, we use the word “aging”.
In the process of electronic products, due to the complicated process and use of plenty material .will introduce various defects (ever get like thatgood the product design). Whether it is manufacturing defects or defects in components, can be divided into obvious defects and latent defects, obvious defects those defects cause the product does not work properly, such as short / open(circuit). products can be used temporarily ，these conditions（potential defects） existed. defects will soon be exposed in-use, the product can not work,
such as insufficient solder, although the product can be used, but a slight vibration may cause the short among solder joint. The obvious defects can be checked by ICT (In- Circuit Test which is a standard test method for testing the defects and poor components of the production.),
It mainly checks the single component and circuit network, and short-circuit condition, with the operation of simple, fast, accurate and fast fault location, FT, etc.. Potential defects are not found by routine inspection, but the use of aging to eliminate. In fact,the aging purpose—– there is a more important purpose (just like test): continually renew this processing technical with aging .perfecting the Product quality。

Why bluish purple light when uv led strip l started working here?

UV electromagnetic spectrum wavelength from 10nm to 400nm, is not visible We can’t be seen any ul lights in the region,in Conventional thinking The UV led should not be visible, so why we use UV led strip is visible blue-violet light? in general hospital use of sterilization lamps (low pressure mercury lamp), there are blue-violet light it?
We know that the main peak of ultraviolet germicidal lamps as  254nm .the power range of ultraviolet sterilization lamp from 4W ~ 100W, the main function is to sterilization, disinfection, clean air. UV is not visible light, in fact the ultraviolet light able to penetrate the ultraviolet quartz glass tube, the low-pressure mercury lamps that emit mercury spectra after electron bombardment, in addition the mercury spectrum ultraviolet, there are have another visible to the human eye .as such 405,435, 545nm light into the visible range, which includes the blue and violet light, so the ultraviolet light look very pretty pale blue.
And the real effect is not visible. in the ultraviolet 254nm. Sterilizing lamp Can be made into the whole ultraviolet ray in the technology,why not do it? short-term large dose, long-term small dose hurting people.

A buyer had been bought that 365NM UV flashlight unexpectedly is 375NM UV flashlight(use 375NM UV led).We know the truth now,many buyers do not have the professional knowledge of the uv led and related professional equipment, unable to identify that 365NM & 375NM ultraviolet.
Now we discuss the differences point of 365NM, 375NM UV LED .365NMwould be better suited for a special occasions and detection Effect is better.  Currently,365NM & 375NM is it was used paper money, high-grade alcohol and tobacco , amber emerald gemstone inspection, That’s why the user are buying (uv led)? the two bands can meet the requirements basically,many buyers Can’t distinguish between the uv 365NM & 375NM. so at special occasions, the 375NM uv led strip can’t meet requirements.
Follow on ，talk about uv 365nm, Effect is betterwhen its use in industry.  some glue or ink curing, parts scar detection, fluid trace detection (including pipeline leak detection, forensic testing and other aspects of the traces fluids 。they needed more strong uv led to operate. The 365NM Is preferred.

Finally, have a simple for you. As follows:

Observation results:
*Green fluorescence with bright, green lines is very clear with 365nm ultraviolet light.

*Green fluorescence, the green lines is not clear, when use the 375nm ultraviolet light.

12PCS smd5050 led 、（Are you ready for that?）

Mounted on the lamp plate,  and  use 3M double-sided adhesive on the back

Final result！

Characteristics of UV led strip disinfection

Bactericidal effect of Ultraviolet led strip is stronger, but the object of penetration is weak. It applies to the operating room, burn unit, space disinfection of infectious diseases between rooms and sterile and non-heat-resistant materials and countertop surface disinfection.
ultraviolet absorption and coincidence photochemical sensitivity range have crossed between UV led strip disinfection’ band with DNA of microbial nucleus.The absorption spectrum of DNA was 240~280nm and the absorption peak was 260nm.It is commonly considered that UV led strip can change and destroy the structural , change the genetic transcription of the cells, and make the organism lose protein synthesis and reproduction ability, other protein absorption (phenylalanine, tryptophan and tyrosine in the absorption peak of 280nm) may also play a role in UV disinfection process.InGeneral , The wavelength of sunlight ultraviolet radiation reaching the surface of the ground is 287~390nm, and the wavelength of ultraviolet radiation is about 250~285nm.
the absorb function of atmospheric ozone layer which can reduce the intensity rate of 290nm UV, so the sterilization ability of the sunlight is less than that of the 290nm uv led.

Was the old one is too heat, it is not working

You broke into your The front cover of reader led.

Have been replaced

Installed the you another reader led

Installation complete

Trapping insects with uv led strip
We stopped by to Review the bactericidal lamp.the UV light bactericidal emission spectrum lines are mainly 254nm and 185nm two types.
Now Ask we about Trapping insects lamp;
Black light is a special lamp and it emits ultraviolet light wave as 330-400nm. which is not sensitive to light human, such humans were not sensitive 330-400nm.aslo called black light black light lamp. User can be used for trapping and killing insects at night, special lamp Help us understand how special lamp oort cloud really works. is because: phototaxis insects on the retina is a pigment. It can absorb light of a particular wavelength, and cause light reaction stimulate the optic nerve, organ movement command through the nervous system, causing insect wings and feet movement, directional light source. Because the insects in the visible region of the visible region(390-770nm) is short than humans.Most phototaxis insects like ultraviolet waves and violet wave 330-400nm, Therefore, specially designed to be able to radiate light 360nm black light. so as to be able to trap and kill most pests and forecasting.

There are two sides to talk about Ultraviolet LED sterilization:
First, ultraviolet irradiation all kinds of bacteria, such as DNA, RNA, etc., to interrupt or rearrangement, destroy bacteria, viruses, DNA, This makes bacteria can not be divided into replication, play a role in disinfection. Thereby enabling the bacteria died of natural causes or kill bacteria;
Second, the role of ultraviolet radiation on the oxygen in the air to produce ozone oxidation,oxidizing ozone can kill bacteria.. Basically all bacteria can kill, even for large creatures also have an impact.Such a conclusion that uv led strip has already been used for water and air disinfection, UV led lamps produce ultraviolet C (UVC) irradiation of the water,the water of bacteria, viruses, algae to have accepted such a UV lighting(such as UVC  wavelength 254nm irradiation). the cell’s DNA, RNA structure was destroyed, the cell can not be regenerated, bacterial virus loss of self replication, so as to achieve the purpose of disinfection.

UV LED working conditions in indoor
Ultraviolet light strip for indoor air disinfection,often can not be reached on schedule sterilization effect because of irradiation intensity is not enough,   so we need to detect the radiation intensity of ultraviolet light,The UV led basic idea was this use of UVC radiation intensity ultraviolet germicidal wavelength to irradiate,  therefore detect radiation intensity UV led with UVC ultraviolet radiation meter (also called UV light meter, UV intensity meter, etc.).  UV radiation intensity is the basic factors for affecting the disinfecting effect, according to the “disinfection technical specifications” provisions. ordinary 30W UV lamp, the new UV lamp radiation intensity should be greater than 100VW / cm2 (distance 1m) is qualified, the radiation intensity of the lamp is used to reach the minimum 70VW/cm2 can be used, but must be increased irradiation time.
According to the formula of ultraviolet irradiation = ultraviolet radiation * irradiation time can be obtained to extend time for different intensity, it can also be obtain that low-intensity or high-intensity short time sterilization can get the same effect. If the intensity of the ultraviolet light source is less than 40VW / cm2, it can not be used to prolong the irradiation time. Do not think that as long as the UV lamp is lit,The UV led Will be able to job( sterilization).

uv led strip Divided into UVA,UVB, UVC& UVD.What’s the difference between UVA,UVB, UVC& UVD band.

*UVA band, the wavelength of 320 ~ 400nm, also known as UVA rays. It has a strong penetration, can penetrate the most transparent glass and plastic. Ultraviolet sunlight contains more than 98% can penetrate the ozone layer and the clouds to reach the earth’s surface, UVA can the skin dermis,ultraviolet light can produce UVA.300-420nm wavelength can be completely through the special glass tube by coloring the visible light, near ultraviolet radiation only with 365nm as the center, can be used for the identification of ore, stage decoration, lighting and other places.

*UVB band, wavelength as 275 ~ 320nm, also known as medium wave erythema effect. ultraviolet middle-penetration, the shorter wavelength is absorbed by the transparent glass portion, contained UVB sunlight is absorbed by the ozone layer most, only less than 2 percent to reach the Earth’s surface, in the summer, or the afternoon will be particularly strong ultraviolet radiation on the human body with erythema .UVB effect, The UVB can promotes positive blood flow and Forming mineral metabolism & vitamin D in the body, but the long-term or excessive radiation can make the skin tan, and cause redness peeling ultraviolet lamp health, plant growth lamps emit is to use a special transparent purple glass.

*UVC band, wavelength as 200 ~ 275nm,  also known as short-wave UV sterilization. It has the weakest penetration ability, can not penetrate most of the transparent glass and plastic.The sun contains the short wave ultraviolet radiation almost completely absorbed by the ozone layer., the wavelength of 100 ~ 200nm, also known as the vacuum ultraviolet. long-term or high-intensity illumination can also cause skin cancer. UV germicidal UVC light is emitted UVC.

*UVD band, wavelength 100 ~ 200nm, also known as vacuum ultraviolet rays.