LED lamp beads Common forms of connection 1. Overall connection form (1) Simple series forms Generally and simple series connection forms of LED1 LEDN are connected at the beginning and tail, and the current flowing during LED is equal. For LEDs of the same-specifications and batches, although the voltage on a single LED may have a small difference, because the LED is a current device, it can ensure that their luminous intensity is consistent, trapped this, simple series forms of formation forms LED has the characteristics of simple circuit and convenient connection. However, due to the use of series, when one of the LEDs occurs, the entire LED lights will be extinguished, which will affect the reliability of use. (2) The series forms of the two -pole diode with the combination of Qina diode are connected to an improved series connection form of a Qiner diode in parallel. In this connection method, the breakdown voltage of each Zina diode is higher than the working voltage of the LED. When working normally, because the Qina diode VD1 VDN, the current is mainly flowing through the LED1 LEDN. When the damaged LED in the LED string is caused In addition to the fault LED, other LEDs still have currents through the current and glow. This connection method is greatly improved in terms of reliability comparison in terms of reliability. Overall parallel form (1) Simple parallel form Simple and connected LED1 LEDN head and tail parallel, each LED is equal to each LED. It can be seen from the characteristics of LED. It belongs to a current device, and the slight changes in the voltage added to the LED will cause a large change in the current. In addition, due to the limitations of LED manufacturing technology, even the same batch of LEDs, the difference in performance is inherent, so when LED1 LEDN works, whoever spends each LED is not equal. It can be seen that the uneven distribution of each LED current may cause the LED life of the current to be too large, and even burn out. Although this connection method is relatively simple. But the reliability is not high, especially for applications in the case of large number of LEDs. (2) The parallel form of independent matching is aimed at the reliability of simple parallelism. The parallel form of independent matching is a good way. Each LED in this way has currently adjustable current (the drive Voutput terminal is L1 Ln, respectively), and ensure that the current flowing through each LED is within the range of its requirements, with good driving effects, a single LED, a single LED Protect complete, does not affect other LED work when faults, and can match the characteristics of LEDs with large differences. The main problem of existence is: the composition of the entire driver circuit is relatively complicated, the cost of the device is high, and the volume of occupation is too much. It is not suitable for the large number of LED circuits. Mixed -connected forms are proposed by integrating the respective advantages of series and parallel forms. The main forms are the following two. (1) When the mixed formation forms are first, the number of LED applications is large, and the simple series or parallel connection is unrealistic. The former requires the former to request a high voltage of the drive (N times of a single LED voltage VF). To fall the drive with a large current (N times of a single LED current IF). This brings difficulties to the design and manufacturing of the driver, and also involves the structural problems and overall efficiency of the drive circuit. The working voltage of the number of LEDs in series and the working voltage of a single LED VF determines the output voltage of the driving force; The NVF value determines the output power of the drive. Therefore, the mixing method after mixing is mainly to ensure that there is a certain reliability (the LED fault in each string only affects the normal light of the string), and the matching of the drive circuit ), It improves reliability than simple series forms. The entire circuit has the characteristics of relatively simple structure, convenient connection, and high efficiency. It is suitable for applications with a large number of LEDs. (2) Several LEDs that are mixed with a string of collaboration first and then skewers are first and then stringed. Since LED1-N LEDM-N is first connected to connect, which improves the reliability of each group of LEDs, but this is important. For this reason, you can choose the working voltage and current as much as possible as a parallel group by pairing, or to solve the small current resistance of each LED. The other characteristics and existing problems of this mixed form form are similar to. (3) Cross array forms of cross arrays are mainly to improve the reliability of LED work and reduce the failure rate. The main form of composition is: each series of 3 LEDs as a group, and the VA, VB, and VC output terminals that are connected to the drive output of the drive. When the 3 LEDs of a series are normal, the 3 LEDs are glowing at the same time; once one or two LEDs are invalidated, it can ensure that at least one LED work normally. In this way, it can greatly improve the reliability of each group of LD light, and it can improve the overall reliability of the entire LED glow. 2. Different connections in different connections have their own characteristics, and the requirements for the driver are different, especially when a single LED fails to fail the circuit work, the overall lighting reliability, and ensure that the overall LED can be as much as possible to be as possible as possible. It is particularly important to continue the ability of work and reduce the overall LED's failure efficiency, etc. All in all, LED group applications are an important way for LED actual applications. Different LED connections are essential for large -scale LEDs and design requirements for driving circuits. Therefore, in the combination of actual circuits, the correct selection of the compatible LED connection method is of positive significance for improving the effect of its luminous effect, the reliability of the work, the convenience of the driver design and manufacturing, and the efficiency of the entire circuit. LED luminous module failure and solution phenomenon: all LED flashing; Question: poor contact; solution: re -fixation or insertion; phenomenon: LED dim; Question: 1. LED polarity is reversed; 2. LED is too long to be too long ; 3. The switching power supply is inconsistent with the LED voltage mark; Light; Question: 1. Whether the direction of the insertion is correct; 2. Whether the power output wiring is correct; 3. The power cord plugs and reverse; the solution: 1. Disassemble , Black wires are connected to negative poles; 3. Find out part of the inverse lines; re -connect; phenomenon: All LEDs are not bright; Question: 1. There is no voltage output of the switching power supply; 2. Whether the output wiring of the switching power supply is correct; solution: 1 , Test -to -power access switching power input terminal; 2. Power wiring positive and negative poles correct;

Author: Tianhui-Air Disinfection

Author: Tianhui-UV Led manufacturers

Author: Tianhui-UV water disinfection

Author: Tianhui-UV LED Solution

Author: Tianhui-UV Led diode

Author: Tianhui-UV Led diodes manufacturers

Author: Tianhui-UV Led module

Author: Tianhui-UV LED Printing System

Author: Tianhui-UV LED mosquito trap

With the increasing popularity of LED lighting products, the exchange of different LED light source module products has always been one of the topics that the industry is very concerned. With the obvious development trend of LED light source modules, traditional LED manufacturers also also Gradually innovate, the purpose is to realize the standardization of the LED light source module industry faster. In the future development of LED, the industry's focus will be concentrated in the development of the integration of the unified and standardized LED light source modules. So what is the so -called LED light source module? In fact, the LED light source module is to synthesize the light source, heat dissipation components, and drive power synthesis modules, mass production, and create standardized LED lighting products through molds. These modular systems include drivers and cables can quickly and conveniently integrate. The LED light source module is designed according to the standard lamp products, and it is also produced according to the standard. The purpose is to better and convenient for the back -end application manufacturer. Since the LED light source module already has the array structure and circuit running required by optics, it can directly save certain key materials and equipment for terminal lighting manufacturers at the back end. For example, PCB, aluminum substrates and patch for welding materials, etc. In addition, the popularization of LED light source modules is becoming more and more obvious, and consumer groups are becoming wider and wider. At the same time, it will bring a lot of higher requirements to the module product. But rest assured that LED light source modules have advantages in terms of cost -effectiveness, reliability and assembly. Therefore, the LED light source module will be more shiny in future general lighting applications. Judging from the current LED market size, my country has become a leading figure in the global LED market. Compared with some international companies that master LED key equipment materials, the advantages of my country's LED industry are currently in LED packaging and application. But if we vigorously develop the LED light source module level and continuously improve, it may be possible to occupy more resources in the entire LED market in the future. . According to the aspect of the LED light source module, some supporting technologies can be formed, such as closely integrated into optical design, integrated light source reliability technology, standardized technology, etc. Only by grasping the key point of LED light source module technology can we accelerate the development of my country's LED industry and enhance the overall competitiveness.

Author: Tianhui-Air Disinfection

Author: Tianhui-UV Led manufacturers

Author: Tianhui-UV water disinfection

Author: Tianhui-UV LED Solution

Author: Tianhui-UV Led diode

Author: Tianhui-UV Led diodes manufacturers

Author: Tianhui-UV Led module

Author: Tianhui-UV LED Printing System

Author: Tianhui-UV LED mosquito trap

In the popularization of patch LED products, 0805 Patch LED lamp beads are widely used in various industries. Instructions, urban lighting projects and other related manufacturers, 0805 patch LED lamp beads are essential, and with the number of products of 0805 patch LED lamp beads, there are many products of 0805LED lamp beads. The 0805 Blu -ray beads and UV purple light beads are affected. Blu -ray killed human eye activity cells about 10 times the green light. UV purple -light killed human eye activity cells 10 times that of blue light. Temporary contact with a small amount of low wavelength Blu -ray can kill human eye active cells in a small amount, and ultimately cancer constitutes plaques. The composition of the LED lamp beads white light is the 460-470nm wavelength blue light to arouse fluorescent powder. The lower the wavelength, the stronger the hairpot. Usually the wavelength of LED lamp beads is controlled within 500nm, that is, 460-470nm, or 465-475nm , It is the most damaged section. If the wavelength becomes larger, then the ability of fluorescent powder will decrease and the efficiency will decrease. In order to pursue brightness, people usually enhance the blue light intensity of LED0402 lamp beads. The longer the lighting time, the faster the fluorescent powder attenuation, and the more intense the light of the blue light band of the human eye, which will cause some damage to the human eye. 0805LED lamp bead advantages introduction: 1. Small packaging size: LED lamp beads are basically a small chip and packaged in epoxy resin, so it is very small, very light, 0805 lamp bead series LED size is 2.0 2.0 *1.2mm, Gu 0805 is also called 2012, suitable for fine products for instructions; 2. Low power consumption: 0805LED lamp bead voltage between 1.8-2.4V, the current is 5mA-20mA, the power is very small about 0.02W3, light, and light Strong focus capacity: 0805LED lamp beads are more concentrated and the effect is slightly better; 4. High brightness: Low -calorie LED lamp beads use cold lighting skills, which is much lower than ordinary lighting lamps. 5. Environmental protection LED lamp beads are made of non -toxic materials. Unlike the fluorescent lamp, mercury contains mercury, and it can be purified. 6, 0805 LED lamp bead chip can use the principles of red, green, and blue. Under the control of computer technology, the three colors have 256 gray and mixed, sending any color.

Author: Tianhui-Air Disinfection

Author: Tianhui-UV Led manufacturers

Author: Tianhui-UV water disinfection

Author: Tianhui-UV LED Solution

Author: Tianhui-UV Led diode

Author: Tianhui-UV Led diodes manufacturers

Author: Tianhui-UV Led module

Author: Tianhui-UV LED Printing System

Author: Tianhui-UV LED mosquito trap

It is no stranger to losing LED lamps, but it may not know much about LED high -power lamp products. During the application process of LED high -power lamp products and devices, heat dissipation, electrostatic protection, and welding have a great impact on their characteristics. It needs to cause cause Pay attention to the application of customers. Let me briefly introduce you how to reduce temperature rise and how to avoid corrosion corrosion in high -power LED lamp beads. 1. How to reduce the temperature of high -power LED lamp beads. At present, the heat dissipation methods of LED lights mainly include natural convection and heat dissipation, installed fans forced heat dissipation, heat pipe and circuit heat pipe heat dissipation, etc. 1. The separation of the power supply from the light body is separated from the power supply itself, which increases the heat source of the LED lamp. At the same time, the integration of the power supply and the lights makes the LED lights unevenly heated as a whole. These factors will cause fatigue and early failure of the lamp, which will affect its life span. 2. The choice of selection of high -quality LED module LED modules also plays a critical role in lowering temperature rising. Choose LED lamp beads encapsulated by the high heat conduction coefficient and consistent material, which can improve the internal heat diffusion. The metal substrate with high heat -conducting and high heat dissipation is used as a light core plate to make the temperature distribution evenly, so that the heat dissipation effect is maximized. 3. Increasing the heat dissipation area aluminum substrate and the interface of the heat dissipation tablet is easy to have gaps, and the heat conduction coefficient of the air is very small, only about 0.03W/m·K, so it can be applied to the contact surface with higher thermal conductivity on the contact surface to increase the actual contact area. At the same time, increase the heat dissipation area of the heat sink and deform the structure of the heat sink to facilitate heat dissipation. Second, how to avoid corrosion of high -power LED lamp beads: high -power LED lamp beads can continue to operate under most different conditions. However, once the LED lamp beads are corroded and the LED lamp beads are chemically reacting by the surrounding environment, the performance of LED lamp beads will be reduced. Avoiding the corrosion of LED lamp beads is an important part of improving the reliability of LED lamp beads. The reliability of LED lamp beads is one of the important specifications used to estimate the life of LED lamp beads. Tianhui photoelectric analysis of the reasons why LED lamp beads are corroded and given how to avoid the corrosion of LED lamp beads.——Avoid LED lamp beads close to harmful substances, and effectively limit the concentration level and ambient temperature of harmful substances. In order to avoid the corrosion of LED lamp beads, avoid contact with the O -shaped circles (O -RING), padding, organic rubber, foam pads, seal rubber, sulfur -containing elastic body, shockproof pads and other harmful substances. Even a small amount of harmful substances can cause LED lamp beads to corrode. Even if LED lamp beads only contact with corrosive gas during the processing process, such as machines in the production line may have adverse effects. In these cases, you can usually observe whether the LED lamp bead component is damaged before the actual system settings. If LED lamp beads cannot completely avoid these harmful substances, LED lamp beads with higher corrosion resistance should be used. The above is about“How does high -power LED lamp beads reduce temperature rise and avoid anti -corrosion?”For a brief introduction, please pay attention to this site if you need it.

Author: Tianhui-Air Disinfection

Author: Tianhui-UV Led manufacturers

Author: Tianhui-UV water disinfection

Author: Tianhui-UV LED Solution

Author: Tianhui-UV Led diode

Author: Tianhui-UV Led diodes manufacturers

Author: Tianhui-UV Led module

Author: Tianhui-UV LED Printing System

Author: Tianhui-UV LED mosquito trap

UV-LEDs, or ultraviolet light-emitting diodes, have become a practical technique for disinfecting water over the past ten years. The advantages of traditional mercury UV lamps over chemical UV water disinfection techniques are still there with UV-LEDs, but they also do away with some drawbacks.

The Sterilization Technology

Numerous applications of UV LED Sterilization technology can be found in daily life. For instance, it is utilized in food, medicine, water, and sewage systems. Chemicals, heat, UV radiation, and ozone are all frequently used UV LED Sterilization techniques.

Due to their simplicity, chemicals (such as chlorine, peroxidase, etc.) are frequently employed for UV LED Sterilization; however, they may have unfavorable effects, such as changing the target's quality. The disadvantage of using chlorine for UV LED Sterilization is the production of odorous and biohazardous chemicals.

Water cannot retain ultraviolet and has little impact on the ecosystem. Additionally, it does not result in bacterial antibiotic resistance. Thus, UV LED Sterilization, which has recently appeared in the spotlight as a chlorination alternative, effectively cleans without chemical compounds.

UV lamps, such as relatively low and moderate mercury-vapor lamps, are used in traditional UV sterilizing techniques. These are used in biological labs and medical facilities to disinfect work environments and equipment. Regarding the efficiency of UV absorption by DNA, UV lights emit UV at a specific wavelength, which very closely matches the peaks of the anti-microbial efficacy curve.

UV radiation with a frequency of 365 nm is categorized as UV-A (320-400 nm), and UV-A has less potential for damage than UV-C (100-280 nm). A UV-LED produces light with a wavelength of 365 nanometers, which is less harmful to human eyes and skin than a lamp with a 254-nanometer wavelength.

Additionally, because UV-LED is mercury-free, it has no negative effects on the environment or people. An environmentally aware sterilizer is a UV-LED. Mercury, which is harmful to the environment and human health, is present in mercury-vapor lamps.

UV sterilizers must be made to fit the shape of lamps, which are often huge and occupy a lot of room. Thus, without using hazardous materials, new UV LED Sterilization equipment with low energy consumption can be created in various shapes and sizes.

Comparison Of UV LED With Conventional LED; S

UV-LEDs are more resilient, smaller, and mercury-free than their conventional counterparts. They also last longer and achieve full power more quickly. These benefits, with almost immediate startup times and customizable wavelengths, provide UV-LED reactor designs with great design flexibility.

Despite these benefits, conventional UV-LED reactor applications have concentrated on smaller networks, which are ineffective for treating municipal water. Due to their modest size, which ranges from 1 to 4 mm, UV-LEDs can be positioned to emit radiation in various directions.

Compared to conventional UV lamps, these highly focused radiation patterns allow for more orientation options and hence, unique fission reactors. For UV water disinfection, UV-LEDs have shown to be at least as effective as reduced UV (LPUV) lamps over a broad spectrum of anti-microbial frequencies (e.g., 250–285 nm).

These variables are improving year after year. The widespread adoption of UV-LED proper sanitation technology has been constrained by high upfront costs, poor output power, and low facade efficiency.

As a result, the usage of the technology has primarily been limited to point-of-use, small-scale batch applications, where the shortcomings of the technology are overcome by prolonged exposure periods to achieve the necessary UV dose.

Nevertheless, the creation of the first full-scale UV-LED reactors that may be used at municipal water works (WTWs) has been made possible by the rapid advancements in UV-LED technology and the optimization of reactors' design and performance.

Such reactors are made of a crystal glass tube with UV-LEDs arranged in a series along the cylinder's edge, which allows UV light to enter the water flowing through the reactor. Thermal control is accomplished by dissipating the heat produced by the operating LEDs using a fluid circulation system surrounding the reactor vessel.

Biodosimetry

To determine if UV-LEDs can be used for large-scale UV water disinfection, a precise assessment of the UV water disinfection efficiency of full-scale reactors is required. Biodosimetry is the current validation method for conventional UV reactors (using mercury lamps)

In this context, the evaluation of a surrogate test microorganism's sensitivity to UV exposure over various doses with calibrated activation kinetics is called biodosimetry. The dose-response curve for UV reactors is typically determined through collimated beam testing using the test water's microorganism.

A reduced relative dose (RED) (mJ/cm2) is computed using the calibrated curve and the measured deactivation of the biodosimeter.

UV Dose-Response Curve For The Reactors

The challenged organism should be grown similarly from the same stock of microorganisms. A UV dose-response curve for the reactors is produced as a result of the operation, and it shows the reduction dosage for each log inactivation attained at full scale.

Additionally, the approach includes UV transmittance (UVT) in the UV dose calculation, standardizing the reactor's UV dose-response curves to various indicative water quality levels based purely on UVT.

Therefore, the primary goal of this work was to determine the UV-LED system's performance by utilizing substitute test microorganisms and comparing it to that of traditional UV lamps.

Cryptosporidium spp

chose Cryptosporidium spp. as our targeted organism since UV is frequently applied in situations with a greater probability of Cryptosporidium incidence. Risk factors for Cryptosporidium include their presence in source waters, resistance to chlorine (reported chlorine contact durations of 1000–10,000 mg min/L), and propensity to evade drinking filtered water due to their small size (4–6 m).

The inactivation UV treatment for Cryptosporidium parvum is 0.16 cm2/MJ, which is considerably less than the corresponding constant for free chlorine.

Where Can You Buy Your UV LED UV LED Sterilization From?

We surely have you covered if you are looking for reliable UV Led manufacturers. Zhuhai Tianhui Electronic Co., Ltd., one of the top UV LED producers, specializes in UV LED air decontamination, UV LED water UV LED Sterilization, UV Led printing systems and curing, uv led diode, uv led module, and other goods.

https://www.tianhui-led.com/sterilization-module.html

It has a skilled R&D and sales team to offer consumers UV LED Solutions, and its goods have also won the praise of many customers. With a complete production run, consistent quality and dependability, and affordable costs, Tianhui Electronics has been working in the UV LED package market.