4K TV purchase is no longer a problem, just five steps
Aluminum circuit boards is a metal-based copper clad plate with good heat dissipation function. Generally, the single layer is composed of three-layer structure, which is a circuit layer (copper foil), an insulating layer and a metal base layer. Also used for high tech use is designed as double layers, the structure is circuit layer, insulation layer, aluminum base, insulation layer, circuit layer. A very small number of applications are multi-layer boards, which can be made of ordinary multi-layer boards combined with an insulating layer and an aluminum base.
Aluminum PCB characteristics
Aluminum PCB use: Aluminium Pcb,Aluminum Pcb Prototyping,Aluminium Pcb Board,Aluminium Circuit Boards Chuangying Electronics Co.,Ltd , https://www.cwpcb.com
One year or two ago, the 4K TV with a resolution of four times that of the FHD TV was also the most popular product in the color TV field.
At the same time as the popularity of 4K TV, there have been many doubtful voices on the market, such as 4K panel true and false disputes, 4K decoding capabilities, 4K display effects, and so on. In the end the big Gods are how to choose 4K TV ? Below, we use Hisense's heavy ULED curved TV LED55K7100UC in the second half of 2015 to reveal to everyone. 
For the appearance of 4K TVs, we do not make too many choices here. Because everyone has different views, the pursuit of quality is the same, and it must be clear enough to be excellent in color.
First of all, let's look at the clarity section. God will choose a 4K picture with a digital scale (resolution: 3840×2160). After playing on 4K TV, see if you can see the number of each scale and see that it is excellent. 2K TV is certainly not clear, and the poor 4K TV is also not clear, Hisense ULED curved TV LED55K7100UC's performance is very good. 
The second step, we will change a picture, look at the text, lines and color display of 4K TV, and Hisense ULED curved TV LED55K7100UC, all the details are clear can be seen as excellent, and vice versa is not qualified. 
The third step, excellent 4K TV, grayscale performance is very good, white is white, black is black, such as the following figure Hisense ULED curved TV LED55K7100UC performance, is to the 32th order, ball diagram of the case of 10 steps, Still legible. If every netizen is also a 4K TV at home, you can try it out for yourself. Whether your home TV can be seen, perhaps only 10% of products on the market can reach this level. 
The fourth step is color and perspective testing. First of all, we must be able to visually see that there is no congruence at the top of the color patch. If this cannot be satisfied, it will perform poorly. Secondly, each color distribution area below the color map should present a triangle, just like the performance of Hisense ULED curved TV LED55K7100UC. The color of the final color chart must also have a uniform and soft transition. 
At the same time, we can also prepare several 4K high-definition large-size pictures of different colors to be played on the TV, reflecting the actual viewing effect. 
Step 5: Look for the blue USB interface. The excellent 4K TV will definitely be equipped with a blue USB interface (USB3.0), and its transmission speed is theoretically 10 times that of the black USB interface. When playing 4K video via USB, it is essential. Hisense ULED curved TV LED55K7100UC is equipped with a blue USB interface on the side of the fuselage. 
The scene can also prepare several 4K videos to actually play on a 4K TV. The above is the demonstration effect of playing 4K video on Hisense ULED curved TV LED55K7100UC. The performance of the onion is not fine and it is in place.
If a 4K TV can achieve the above five points Hisense ULED curved TV LED55K7100UC performance, then it is definitely an excellent 4K TV, and when you next purchase, remember to see more, compare more, you will know more about 4K TV.
â— Surface Mount Technology (SMT);
â— Extremely efficient treatment of thermal diffusion in circuit design;
â— Reduce product operating temperature, increase product power density and reliability, and extend product life;
â— Reduce product size and reduce hardware and assembly costs;
â— Replace the fragile ceramic substrate for better mechanical durability.
â— Audio equipment
Input, output amplifiers, balanced amplifiers, audio amplifiers, preamplifiers, power amplifiers, etc.
â— Power supply equipment
Switching regulator, DC/AC converter, SW regulator, etc.
â— Communication electronic equipment
High frequency amplifier, filtering appliance, reporting circuit, etc.
â— Office automation equipment
Motor drive, etc.
â— Automotive
Electronic regulator, ligniter, power controller, etc.
â— Computer
CPU board, floppy disk drive, power supply unit, etc.
â— Power module
Inverter, solid relay, rectifier bridge and so on.
â— LED lighting
With the promotion of energy-saving lamps, various energy-saving and beautiful LED lamps have been well received by the market, and aluminum PCB used for LED lamps have also begun to be applied on a large scale.