Posts

The problem of dark area about Panel and Plate light

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            When we talk about ultra-thin panel lights and flat panel lights, the main problem is that the dark areas and low light efficiency . Why some of that the light is very uniform and bright, but other is only dark and also out of light?Let's solve this problem.        The difference is obvious. What is the main reason  of the difference?then we need to take a look about  structure of the panel lamp.          We see that both the panel light and the large flat panel have the same structure, and the light comes out from the SMD led and passes through the diffuser plate.And the one that affects the light distribution most is the guide plate.Let's take a look at the real picture of the guide plate.           The most important function of the guide plate is to make the light f...

How to use the existing integral ball to test the low voltage lamp parameters?

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                The integral sphere is the most commonly used tool for testing LED products, but many of the points that are used by many factories are weak in testing low-voltage products.The reason for this is simple: there is an upper limit to the current supply of low-voltage lamps such as dc12/24/36v.With DC12V, take the 12w low voltage bulb for example, the integrating sphere should be 12v power supply output voltage, electric current achieve to A, some of the integrating sphere power supply 1 reach such a large current output.This is only can not 12w , there will be much more electric current about 3A like the DC12V 30w of flood light.Obviously, this is beyond the upper limit of many points.This is very  frustrating for many factories. Is there any way to get the parameters of the low-voltage products we  justuse  existing integrating spheres? Yes ,the current ,There are, however, several alte...

Dismantling contrast of Flexible LED wall lamp

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           Received several flexible LED wall lamp from suppliers these days (3w, 3000k, the input voltage: 85-265 v AC), let us identify the quality about them,.When I get the sample, to be honest, almost out body looks same, the inside of the materials and do manual work is really very big difference.          If only check the first photo ,there is no difference. its almost same except the base size.But when you look the second photo ,I hope you can see the difference and the difference is entirely determined by ideas.  We can clearly see the difference.         ① The  second driver was protected by the power pack ,The connection with the LED SMD is protected by special connection head, while the first power supply is directly wrapped in a heat-shrinkable casing, and the wiring of the LED SMD is directly welded to the PCB board.   ...

Some basic knowledge of LED finding suppliers online

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        In many of the foreign and small clients I have contacted, many customers complain that there are so many suppliers in China, and they all look the same. How do I choose?         Ok,Let's start here and see how we can make a general judgment about our suppliers.General buyers looking for suppliers based on two types: one is as long as you have left the purchasing information, basically you will receive a lot of promotional letter , there will be some you can choose.The second is to find suppliers via the Internet or SNS. No matter how you got the information,there is necessary for early communication.You can get many basic information about these suppliers.Just like scale of the company,status,products road map,sales market and so on.You will find many questions when you check carefully .Also for the communication tool ,I would recommend a timely chat tool like “ skype ”  instead of an email. S...

How to quickly determine the quality of LED light - LED bulb

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       I think this situation will be happened to every buyer ,many people may be attracted by this cheap price ,but in another side,we also afraid too low price will cause product quality to descend seriously, what to do? How to simply identify one LED lamp ? This is a big topic, after all, there are so many kinds of led light, so let's start with the LED bulb.        As the biggest export quantity of LED light ,there is no doubt for LED bulb,but it’s not easy for technological requirements.As the size of bulb is small,all the heat is concentrated in the cavity body, once the cooling and temperature control is not good, the whole lamp will be easy to appear dead lamp and light failure too fast, especially more than 7w bulb light.     Lets take this inferior bulb and  elegentlight bulb for example,we will see the difference: 1.Power supply part:        When you got one dri...

The category and distribution of Chinese LED supplier

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      As the world's largest LED production base, China is undoubtedly the most overseas LED buyers preferred region, and some even have suppliers in China for many years, but to really understand the situation of the LED supplier and purchaser are very few, but it will be great help to choose efficient suppliers by knowing the industrial distribution .      There are two kind of LED suppliers in China:   1.Traders         China's traders mainly focus on two major regions, one in the pearl river delta region centered in guangzhou and shenzhen, and one in the Yangtze river delta region mainly in hangzhou, ningbo and Shanghai.The common advantage of traders is that they have a very large number of suppliers' resources, which can be selected in a variety of categories, which can be targeted to recommend products to overseas customers and provide various types of services.Some of the larger traders even have...

How to choose a good low-voltage led light bulbs

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How to choose a good low-voltage led light bulbs        At present, there are so many kinds of 12V/24V low-voltage bulbs in the market, and the prices are varied,take 9w for example,the price from 2.5RMB to 28RMB.But for same LED Why price is so difference more than 10 times? What are the main solutions for low voltage LED light bulbs?What are their strengths and weaknesses?How to choose a good bulb in so many choices?       To do a better job, let's take a look at some of the most common low-voltage bulb .   1.Constant voltage without power supply low voltage bulb       This is the DC12V 9W bulb which saw from Facebook based on price 2.5RMB.I was shock when I saw it ,how to make it based on this low price ?Even we can’t buy the material under this price.But when we open it ,we found the reason.        First of all,there is no driver on this bulb,DC12V power directly connect the PCB throug...