1, the user can select the controller according to the above specifications, RGB controller series can be selected to achieve jump and gradient effects, commonly used QX308/RF, CT309/RF. Note that the LED must be a common positive () pole connection method, the controller controls the negative (-) pole, and the controller does not include a low-voltage power supply.
2, chip specifications and models are: according to the shape classification, the chip is generally divided into round and square pieces. Among them, the wafer is relatively low grade, the performance is not stable enough, generally do not use the LED produced by the wafer; Squares are generally measured in size, such as 12 mil (1 mil =0.0254 square mm). In general, the chip of the same brand, the larger the chip size, the higher the brightness.
3, the four-element chip, the MOVPE process is used to prepare, the brightness is brighter than the conventional chip. (2) Good reliability. (3) Widely used. (4) High safety. (5) Long life.9 How to judge the price of the led chip: in general, the price of the lower chip is higher than the price of the wafer, high-power led chip is certainly higher than the low-power led chip, the import is higher than the domestic, and the source price of the import is reduced from Japan, the United States and Taiwan.
1, there are SAN An photoelectric, Huacan photoelectric, Yuanrong photoelectric, GuoXingguang electric, Shilan Ming core, Xiamen SAN An, Dalian Lumei, Wuhan HuacanXiamen Dry photo, Jiangxi Jingneng, Jinko Electronics, Shenzhen Olund, Shanghai Blu-ray. Taiwan's Epistar is referred to as ES, (Lian Chuan, Yuan Kun, Lian Yong, Guolian), Guang Gallium Optoelectronics (Huga), New Century, Guang Hong and so on. 2, white, blue, green light is generally 12~14mil, which is the most commonly used chip on the market, if you use a larger chip, although the brightness can be improved a lot, but the chip price is greatly increased, which is why large-size chips are rarely used.
3. MOJAY M8900 YesA primary side feedback, with single-stage active PFC high precision LED constant current control chip, M8900 integrated single-stage active PFC line, can achieve high power factor and very low total harmonic distortion, the chip can enter quasi-resonant mode, thus achieving high efficiency and reduced switching loss.
4, DOB is to put the LED constant current Driver source driver on the aluminum substrate, this technology has been available as early as 5 years ago, of course, at that time not called DOB and called light engine. The two names are very different, DOB refers to a method or practice, which is to put the drive power intoOn the aluminum substrate, the light engine is a new product name, and all LED aluminum substrates with constant current drive source are called light engines.
5, the LED chip is also known as the LED light chip, is the core component of the LED lamp, that is, the P-N junction. So what are the categories of LED chips? MB chips, GB chips, TS chips, AS chips are the most common. Let's learn about the relevant knowledge with Xiaobian. What are the categories of LED chips MB chip definition: MB chip_Metalbonding (metal bonding) chip_The chip belongs to the patented products of UEC.
1, LED chip in 2833523014 refers to the size of the chip, the size can be customized, this is just the general common specifications (mil is a unit of size, a mil is one thousandth of an inch, 40mil is almost 1 mm), so can not only this to determine the better or worse.
2, 0138255050 refers to the size of the table mount SMD LED. For example, 0603 refers to a length of 0.06 inches and a width of 0.03 inches.
3, is the specification of the lamp bead patch, such as the commonly used 2835 can also be called 3825, 6w means that the power of 645mm length is 6W.
4, mA×2 = 40mA, 18 series -- operating voltage 0V×18 = 54V. Choose the right driver according to these two calculations. If you change the original string combination mode, you must recalculate the selection. Finally, upstairs was right, ShanTake a magnifying glass to see), followed by 138,4953 equal line control chip, and finally the most look the same length is the control lamp bead chip is generally 593,62317.
2, check the brand LOGO: most brands of the LED display will be printed with their own LOGO, which is the most common way to view. If you buy a "new screen display" LED display, you can directly find the "new screen display" LOGO on the LED display housing or at the bottom. Check the model label: Many brands of LED displays will be affixed to the equipment housing during the production processLabel the device, marking the model, serial number and other information.
3, open the back of the display, under normal circumstances, the control card is installed inside the display, you can see whether there is a sticker on the control card with the product number, if there is, you can go to the official website directly to search for the model, a large probability can be found. If the sticker is missing or blurred, you can also look at the circuit board on the controller, which generally has a model, and search for proofreading.
4, you can determine the display model. Second, watch the distance to judge the LED display model, such as standing in 16Within meters, the LED screen looks more fuzzy, there is a feeling like Mosaic, and at about 16 meters, the effect is more normal, so the best visual distance of this screen must be about 16 meters, according to the formula: the best visual distance = point spacing ×7, the point spacing should be about 10mm, so the model is P10.
5, there are signs on the ic board behind the regular manufacturer LED display. Such as the powerful giant color of the cell board. And batch identification. Get this information, you can go to the manufacturer's official website for consultation. Control card then well-known manufacturers also have their own company logo generally on the largest chipUp.