In the era of other lighting replacements for incandescent lamps, consumers are not absolutely resistant to LED lighting, but they are not daring to accept it. At present, the product identification on the LED market is unclear and unclear, and there is also a lack of uniform standards. In the face of uneven products, the Guangdong Provincial Bureau of Quality and Technical Supervision conducted a random inspection of LED lighting products.
This time, we surveyed 21 self-ballasted LED lamp products produced by 21 companies in 7 cities including Guangzhou, Shenzhen, Zhuhai, Foshan, Zhongshan, Huizhou and Dongguan. A total of 23 batches were tested, and 17 batches were unqualified. The pass rate was less than 30. %. It is understood that the current LED market enterprises are scattered, the brand may be as many as a thousand, but there are not many brands that are truly trustworthy. Industry experts said: "The quality of products below 30 yuan is difficult to guarantee."
For the LED lighting products on the market today, experts propose purchase suggestions:
First, look at the product packaging: see if there are product trademarks and certification marks, such as: 3C certification, CE certification, etc., in addition to see whether the product's rated voltage, voltage range, color temperature, precautions, safety instructions, applicable environment, etc. .
Second, the second price comparison: due to special reasons in the LED lamp production process, the cost is relatively high, the general domestic LED lights are more than 40 yuan, the imported is higher. In addition to seeing the appearance of the product is not rough, is there any glue is not cleaned, is there a screw protruding fixed plane? Whether the color of the screw matches the color of the outer casing.
Third, the light after lighting needs to carefully observe the color change of the lamp. If it is changed from yellow light to white light or white light to white light with blue light in a short time, such a product must be abandoned. There are two possibilities for this situation: one: power problem; two: LED light source selection error. In addition, the color of the lamp must be positive, and the color of the lamp is the same, that is, it does not flash. After the LED lamp is started, the heat dissipation of the product can be detected by touching the surface temperature of the product. If the temperature of the product continues to rise within 1 hour, instead of the temperature being stable for up to 30 minutes, do not select the product because of heat dissipation. , resulting in shortened product life.
LED Display controll system
LED Display Control system is made up of hardware and software components and it mainly contains the following parts:
Sender card which is installed in the controlling PC/LED videoprocessor
Receiver cards which are installed in each cabinet of LED display
Hub cards which are also installed in each cabinet of the LED display
Accessories like fiber optic converter, multi-function card, etc
The DVI signal comes from the sender card in the controlling computer and is then given to the receiver cards in the LED display cabinets. If the input signal is from any other device such as a camera, DVD player, etc, then it is captured by the sender card installed in a small device called a LED Video Processor which is then given to the receiver cards in the LED displays.
Novastar Control System,Novastar Controller,Novastar Sending Card,Novastar Receiving Card
Shenzhen Priva Tech Co., Ltd. , https://www.privaled.com