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What should you pay attention to when buying LED high bay lights?

LED high bay lights are LED lamps used in many factories and mines in production areas. Generally, lamps and lanterns will be evenly arranged above or on the side walls of the work site to illuminate the entire work surface. Therefore, it is necessary to use higher power incandescent lamps, tungsten halogen lamps, high intensity gas discharge lamps or a higher number of fluorescent lamps. Most of the high bay lights also belong to this category. General lighting has higher requirements on the distribution of light, and two types of light distribution, direct lighting type and semi-direct lighting type, are widely used.

Of course, there are many things to pay attention to when purchasing LED lights. Today, Zhongshan Xinpengda Lighting Factory will explain to you.

First, look at the heat dissipation structure

Generally, the materials used for lamps are aluminum profiles, metal sheets and copper columns. When we turn on the lamps, we can observe whether there is a temperature rise. It is impossible to have no temperature. It means that heat cannot be dissipated, but the temperature rise should not be too high. Degree is appropriate.

Second, look at the actual needs

Different occasions have different requirements for lamps. Industries such as coal, petroleum, chemical and other industries need to consider not only whether the lighting needs can meet the requirements, but also the factors of dustproof and waterproof lamps, and even the explosion-proof requirements. Such enterprises need to consider whether the product meets the requirements of national quality standards, whether it has passed the explosion-proof certification and other factors when choosing lamps and lanterns.

3. Look at the light source part

The light source part mainly depends on whether genuine chips are used, such as Purui, Epistar, Cree, etc. At the same time, the light source part and the power supply part should have good waterproof function.

Fourth, look at power, illumination and color temperature

This is particularly professional. When purchasing LED high bay lights, the power should be selected according to the actual lighting area. High power will cause waste of electricity resources, and low power will not meet the lighting needs. At the same time, conditions such as illumination and color temperature are also very important. The production line requires high resolution, such as the textile industry, which requires high resolution lamps. It is recommended to clearly inform the shopping guide of your actual needs when purchasing.

Of course, the most important thing to choose LED lights is to choose a guaranteed business. Zhongshan Xinpengda Lighting Factory was established in 2014. It is located in the economically developed Pearl River Delta Forte, an ancient town in Zhongshan known as the Lighting Capital of China. The main products are various power LED wall washers, flood lights, flood lights, digital tubes, point light sources, street lamp heads, tunnel lights, high bay lights, underwater lights, buried lights, etc.

our services include: led-high-bay-light,led-explosion-proof-lights,led-spot-light,led-street-light,led-tunnel-light,led-flood-light,led-wall-light,led-underground-light,led-garden-light.

Copyright Notice: The source of this article is https://ledlight.wiki/

ptjcncmachining

What are explosion-proof lamps and how to choose explosion-proof lamps?

1. What are explosion-proof lamps?

As the name suggests, this type of lamp not only has a certain lighting effect, but also has a certain explosion-proof function. It is widely used in inflammable and explosive places such as construction sites, chemicals, gas stations, oil fields, mines, various military sites, transfer stations, etc. Explosion-proof lamps are special industrial lamps, which can ensure the safety of users on the premise of ensuring the quality of lighting. The explosion-proof lamp shell has strong corrosion resistance and good sealing performance, and is a new type of LED energy-saving lamp source product. The shell of the explosion-proof lamp is made of lightweight aluminum alloy die-casting, and the surface is treated with high-voltage electrostatic spraying, which can be used as a lighting emergency lamp.

2. How to choose explosion-proof lamps

1. Color temperature selection

When we buy, we should choose the appropriate color temperature according to its use place. The color temperature mentioned here actually refers to the color of its light. Generally speaking, the color temperature of explosion-proof lamps needs to be selected according to the season and environment. Its color temperature scale is 2700-6500K. If the value is smaller, it means that it is more inclined to yellow light, and vice versa, it is inclined to blue and white light. Yellow light is usually used in living rooms, bedrooms, dining rooms or in low-light situations, and can play a role in creating a warm and comfortable feeling. The white light is brighter and clearer, which is suitable for use in summer, study, kitchen and other places.

2. Color rendering options

It actually refers to the original color of the object under the illumination of the lamp. Its value is between 0 and 100. Now the color rendering specification of the explosion-proof LED bulbs on the market is greater than 75. For the sake of safety, it is recommended to We still choose more than 80, which can help reflect the authenticity of the color.

3. Luminous flux selection

Even if the same lamp is used in different environments, the lighting effects presented by them are different. In order to ensure the safety of our use, it is recommended that you should pay attention to its luminous flux when purchasing explosion-proof lights. The luminous flux refers to its brightness. If the place of use is large and the light is dark, we need to install a few more explosion-proof lights; if the place of use is small and the light is sufficient, 1-2 explosion-proof lights are needed.

What are explosion-proof lamps? As a special product, it is good to use explosion-proof lamps, but its appearance design is not so exquisite, which may affect the beauty of interior decoration. How to choose explosion-proof lamps? If you want to choose explosion-proof lamps, it is better to decide according to its practicality and matching style.

our services include: led-high-bay-light,led-explosion-proof-lights,led-spot-light,led-street-light,led-tunnel-light,led-flood-light,led-wall-light,led-underground-light,led-garden-light.

Copyright Notice: The source of this article is https://ledlight.wiki/

ptjcncmachining

Selection of LED light drive power

The choice of LED lamp power supply is mainly considered from the output voltage, output current, and corresponding power wattage of the power supply. LED power supply generally has two types of constant current source output and constant voltage source output. First, for the LED power supply output by constant current source, we mainly consider its output voltage. For LED power drivers that output the same current, its output voltage It is also different, so when choosing a constant current LED power supply, it should be consistent with the working voltage of the LED lamp. For example, for a constant current LED power supply with a rated current of 200 mA to 300 mA, its output voltage is between 9V and 13V. The range between 10V and 25V, the range between 24V and 42V, the range between 45V and 63V, etc., so we choose this power supply to consider its output voltage range.

Similarly, for the constant voltage source LED power driver, under the same output voltage, its output current is also different, so when we choose LED power supply, we need to consider its output voltage or current according to different types of LED power supply. . In addition, the power range of the LED power supply should also be considered. If the power range is selected incorrectly, the LED lamp beads will be burned, or the LED lamp will flicker.

For simple LED lamps, it is often used to reduce the voltage through a simple RC resistance-capacitor step-down link, and then arrange it through a diode and add a suitable current-limiting resistor to drive about a dozen high-brightness LED lamp beads. Yes, the lamp beads here can be connected in parallel or in series, but the current limiting resistor must be selected well. For example, the mini LED desk lamp I made before is a power supply formed by this method. I used 12 LED lamp beads in parallel, and used a 2.4 ohm two-watt resistor as the current limiting resistor, and the effect was very good.

The LED light has high brightness and saves electricity. Now in order to make LED lights more humane, we can also choose LED power supply with dimming function, such as LED dimming power supply using thyristor, which has high adjustment accuracy and efficiency. If you need to install in a small space, you can choose this LED power supply with dimming function.

Some LED power supplies with dimming function are made of MOS tubes, which are also called MOSFET dimmers. It can not only control the on and off of LED lights, but also control the LED lights. Like the LED dimmable power supply made of silicon, the phenomenon of invisible lighting occurs. This kind of LED dimmable power supply can be selected for a single LED lighting lamp or occasions with a small load.

our services include: led-high-bay-light,led-explosion-proof-lights,led-spot-light,led-street-light,led-tunnel-light,led-flood-light,led-wall-light,led-underground-light,led-garden-light.

Copyright Notice: The source of this article is https://ledlight.wiki/

ptjcncmachining

Types and advantages of fan blades of centrifugal fans

Centrifugal fan is only one of many fan products, it has good performance, which is also closely related to the design of its blades. The same centrifugal fan is configured with different blade types to meet different application requirements.

1. Backward curved fan blades

This kind of blade can also be divided into single-plate type and wing type. The backward-curved single-plate blade has large structure size, low pressure coefficient and high efficiency. Therefore, the dynamic pressure accounts for a small proportion of the total pressure. Suitable for heavy wear, i.e. relatively high price. Backward curved wing blades have the same characteristics and should be the most efficient.

2. Forward curved blades

The blade structure of the forward curved blade is generally smaller, the pressure coefficient is higher, and the efficiency is generally lower. The dynamic pressure accounts for a large proportion of the total pressure, but it has the advantage of low price.

3. Radial fan blades

In terms of size, the radial fan blades are medium in size; in terms of performance, the pressure coefficient is high, the efficiency is high, and the dynamic pressure accounts for a large proportion of the total pressure, which is suitable for occasions with severe wear; there is no advantage in price.

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ptjcncmachining

The difference between the cooling fan ball bearing

The cooling fan has single ball and double ball bearings, which can be selected according to different needs. The following will introduce the difference between the two bearings.

single ball bearing

The single ball bearing adopts the form of sliding friction and ball friction. One ball bearing and oil-impregnated bearing are used to reduce the cost of the double ball bearing. The rotor and the stator are lubricated with balls, and lubricating oil is added. The service life is about 30,000-40,000 hours. .

Advantages: longer life than oil-impregnated bearings, stable operation, low cost

Disadvantages: Although the noise is small, the noise will increase for a long time

Double ball bearing

The double ball bearing is a high-end bearing. It adopts the form of rolling friction. There are two balls. The bearing has several tiny steel balls around the axis. When the fan blade or the axis rotates, the steel balls rotate along with it. Because it is a sphere, the friction force will be reduced. It is relatively small, and will not leak oil. It has a long service life and a service life of about 50,000-70,000 hours. It has good performance, high speed and large air volume.

Advantages: good sealing performance, long service life

Disadvantage: high cost

our services include:dc-cooling-fan, centrifugal-fan, ac-cooling-fan, dc-blower,small-cooling-fan,chip-coolers,computer-heatsink, aluminum-cpu-heat-sink,copper-cpu-heatsink, aluminum profile-heatsink

Copyright Notice: The source of this article is https://cpuheatsink.com/

ptjcncmachining

The difference between the cooling fan ball bearing

The cooling fan has single ball and double ball bearings, which can be selected according to different needs. The following will introduce the difference between the two bearings.

single ball bearing

The single ball bearing adopts the form of sliding friction and ball friction. One ball bearing and oil-impregnated bearing are used to reduce the cost of the double ball bearing. The rotor and the stator are lubricated with balls, and lubricating oil is added. The service life is about 30,000-40,000 hours. .

Advantages: longer life than oil-impregnated bearings, stable operation, low cost

Disadvantages: Although the noise is small, the noise will increase for a long time

Double ball bearing

The double ball bearing is a high-end bearing. It adopts the form of rolling friction. There are two balls. The bearing has several tiny steel balls around the axis. When the fan blade or the axis rotates, the steel balls rotate along with it. Because it is a sphere, the friction force will be reduced. It is relatively small, and will not leak oil. It has a long service life and a service life of about 50,000-70,000 hours. It has good performance, high speed and large air volume.

Advantages: good sealing performance, long service life

Disadvantage: high cost

our services include:dc-cooling-fan, centrifugal-fan, ac-cooling-fan, dc-blower,small-cooling-fan,chip-coolers,computer-heatsink, aluminum-cpu-heat-sink,copper-cpu-heatsink, aluminum profile-heatsink

Copyright Notice: The source of this article is https://cpuheatsink.com/

ptjcncmachining

Application of DC cooling fan in various fields

Cooling fans are generally used in printers, fax machines, banner machines, medical equipment, automotive electronics, power equipment, electric vehicle chargers, communication/communication cabinets, frequency converters, transformers, industrial control equipment, stage lighting (light source cooling), new energy ( Cooling fans are required for equipment such as batteries into cabinets), engine cooling, instruments and meters.

DC cooling fanshave a wide range of applications, but cooling fans are generally installed inside the machine. Now, most devices will generate heat after running, and they need cooling fans to dissipate heat. The application of cooling fans in various fields is described in detail below.

Cooling fans are generally used in printers, fax machines, banner machines, medical equipment, automotive electronics, power equipment, electric vehicle chargers, communication/communication cabinets, frequency converters, transformers, industrial control equipment, stage lighting (light source cooling), new energy ( Cooling fans are required for equipment such as batteries into cabinets), engine cooling, instruments and meters.

The following is an example of the application of automobile cooling fans in automobiles

The replacement of automobiles clearly marks the changes of this era, and each generation of changes has higher and higher requirements for heat dissipation. From the initial heat dissipation, to the need to reduce noise while satisfying heat dissipation, and then to develop, not only reduce noise and heat dissipation, but also need to be able to control heat dissipation in real time, that is, to support PWM intelligence fanspeed regulation cooling fans.

·During the operation of the car, heat is continuously generated, and the components around the combustion chamber (cylinder liners, cylinder heads, valves, etc.) must be properly cooled. The automobile cooling system is composed of radiator, thermostat, water pump, Communications,cylinder water channel, cylinder head water channel, fan, etc. The radiator is responsible for th,e cooling of circulating water. Its water pipes and heat sinks are mostly made of aluminum materials. The aluminum water pipes are made of flat shape, and the heat sinks are corrugated. The heat dissipation performance should be taken into account. The installation direction is perpendicular to the air activity direction. It is possible to achieve smaller wind resistance and higher cooling efficiency.

·

The coolant flows inside the radiator core and the air passes outside the radiator core. The hot coolant is cooled by dissipating heat to the air, and the cold air is warmed by receiving heat from the coolant, so the radiator is a heat exchanger. The cooling fan is installed in the radiator to blow away the heat in time to achieve the whole cooling effect.

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Copyright Notice: The source of this article is https://cpuheatsink.com/

xingwang

desktop or with the aid of navigating to the sport’s installation folder and double-clicking on the Lost Ark Gold Lost Ark.Exe file.


Upon launching the game, you'll be offered with the login display. Enter your account credentials (e mail deal with and password) to log in and get entry to the game. If you do now not have an account, you could create one with the aid of clicking at the “Create an account” link on the login display screen.


Once you have got logged in, you may be taken to the person choice display screen. Here, you may lolga.com create your person and pick out your beginning magnificence. After you have made your picks, click on on the “Start Game” button to begin gambling Lost Ark.


xingwang Sep 23 · Tags: lost ark gold
EllaJoy

Pedophilia is a pathological preference for sexual gratification in adolescents. Pedophilic sexual orientation is usually aimed at prepubertal or undeveloped children. With the upsurge of online pedophile pornography, targeting pedophile crimes has gradually become an important ethical topic of public opinion.

To reduce the sexual abuse of children, various countries have introduced relevant laws and regulations, conducted sex education, and even promoted Mini Lifelike Sex Dolls in some countries. However, for those who like pedophiles, the Mini Sex Doll helps them solve this fetish, but some people will have other ideas.

Small Sex Dolls allow would-be pedophiles to have physical contact or increase their risk of committing crimes against children in real life. Mini Sex Dolls will satisfy pedophiles' sexual urges, thereby reducing their use of real children.

Realistic BBW sex doll

Small Sex Dolls are likely to bridge the gap between potential pedophilia and sexual fantasies and true crime, and actual encounters with sex dolls may contribute to their risk of real crime. Exposure to lifelike sex dolls is likely to cause the physical, emotional and psychological numbness of child sexual abuse, making it a normal part of child sexual abuse, two experts said.

Small Sex Dolls for sale! Our Silicone and TPE real sex dolls cover a wide range of body types, This hot collection Mini Sex Dolls is suitable for people who like small sizes and lightweight bodies.

Our purpose of launching the mini doll is to satisfy some people's "raising children" experience. It is very popular in Japan. Mini silicone dolls have real proportions and real touch, which are loved by many doll lovers.

The more well-known brands are AXB Doll, Cat Doll (professional production of micro sex dolls around 100cm), Dollhouse 168, and Irontech doll. Most high quality sex dolls factories such as 6ye Doll, JY Doll, AF Doll, WM doll, Qita Doll, etc. also produce mini love dolls, but the quality is not the same.

Not only these little girl sex dolls are very suitable for the "Raising children" experience, but also especially suitable for JK uniform makeup, pure girl dress-up, Lolita dress-up, and cute costume dress-up. They can be used as models for shooting or video recording.

Everydayhealthinformation

It is necessary for parents and guardians that are adults responsible for the care of children to notice these things as early as possible to save extra trouble for themselves and also the child. Students with less grades also show these signs when they struggle with attention deficit hyperactivity disorder. The condition shows a recurring pattern of inattention and/or hyperactivity or impulsivity that interferes with daily work schedule and functioning.

You might take the kid to a doctor or medical professional after you experience them showing these reactions in everyday life for a period of above 6 months. 3

Fails to give close attention to details and often makes silly mistakes with schoolwork or assignments, or with other activities.

Wants to do the next task without finishing the current tasks

Has attention elsewhere when you talk to them

Stays up late at night (insomnia anxiety) and cannot fall asleep

Has trouble organizing and managing tasks

Forgets things and important messages to deliver

Hates things like puzzles, chess, and mental games that require a higher amount of concentration

Often gets side-tracked when doing schoolwork or homework or other activities

If the frequency of these things happening is too much to bear then consult with a child specialist or psychiatrist before taking concrete steps moving forward.

ADHD diagnosis is possible by yourself after observing these symptoms.


https://everydayhealthinformation.com/how-do-you-know-you-have-adhd/

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