The current Internet TV boxes have gone to many places. They all have to be listed. There must be one hundred and eighty types. When I bought a few years ago, there were few varieties and the room for selection was not too big. I bought one and came back and used it. It is still in use.
Some manufacturers have more than a dozen models ranging from high prices to low prices. The most expensive ones do not exceed 600 yuan, the price is 599 yuan, and the lowest one is more than 120 yuan, and almost all of them will give gifts, gifts are also It's a gadget.
The colors are white, enamel, pink, yellow, red, or white, and the shapes are rectangular, square, round, and that heart-shaped.
Close to my home there are TV boxes sold, I do not buy nor go often, but occasionally go there will also go into the model to see if you do not ask, when you enter the room, that enthusiasm When you come up, someone will come over and introduce you, which one is better, which one is new product, which one has any new function, which one has any giveaway, and through their introduction, there will be more Little had some impressions on the TV box. I said that my family had spent a few years. I also had a little bit of acquaintance to communicate with them. In the end, I did a little more knowledge.
As for which brand is good, I would not recommend it to you here. Those manufacturers did not give me money, nor did they give any advertising fee on the first page. Therefore, I wouldn’t even have to share the advertising suspicion. This is not a pit and I don’t jump, but I can give you a reference, that is, if you have the money, you will buy the most expensive one, 599 yuan. If you don't want to spend a lot of money, you will only buy 129 yuan. The price is 129, 159, 199, 299, 399, 499, 599, you sell the TV box store yourself, and you can see it at a glance, choose the color and price you think is suitable your.
Someone may want to ask me, then you are using a brand name, I can tell you that in order to avoid suspicion of advertising, I just do not tell you!
Xiao Bian integrated the sales volume and reputation of the 2017 TV box and made the following rankings. From the first few points of view, TV boxes are mainly dominated by Lynx Boxes, Tate Boxes, and Millet Boxes, but some new boxes do. Also good, for users, more than one option why not?
The first paragraph: The only ad box · Tate box WE30 pro (Click for details)
Reason for selection:
1. The only box that has no advertisements and focuses on the video playback experience
Survey data shows that 90% of users buy boxes just to watch videos! Taijie Box builds six core technologies for video playback experience, supports more than 17 video formats, including 4K resolution, supports H.265 hard solutions, increases color depth by 20%, and saves 50% bandwidth during playback !
2, home users (wife, elderly, children) experience the best, the highest duration
Among the users of the box, family females, elderly children and children have the highest duration of use of the box. The Tatebox technology team devoted seven years to launch the smoothest and most convenient operating system, from the operating language, usage habits and system fluency. Sex and other aspects, so that the family is more easy to operate, use more convenient, the user's five-star praise, the more common word is that the Tate box is the simplest operating system used in the box.
3, unique heat dissipation design, the service life of at least six months
The industry's exclusive ring fan wing cooling channel, the thermal performance than the previous generation products increased by 80%, the industry is the leader, to avoid the excessive loss of internal components, compared with the general box, the service life of at least six months.
The second paragraph: Lynx Box M17 (Click for details)
Reason for selection:
1, return to the classic shape, beautiful appearance
Tmallbox 3 (M17) returns to the classic kitten face shape of black under red. The black kitten face is covered with glass material. It looks crystal clear. The kitten's nose is an LED lamp to show the work of the box. status. The red part on the upper part is frosted and the overall shape is lovely and stylish.
2, TV shopping is very convenient
Dozens of featured categories make it easy for you to find the type of things you want to buy. When you see your favorite product you can buy directly through the Alipay code, which is very easy to operate.
The third paragraph: Huawei glory box PRO (Click for details)
Reason for selection:
1, voice remote intelligent and interesting
The remote control also increased from the original 11-button to 12-key buttons, and the light blue microphone symbol marks its support for voice functions. It also makes the operation more intelligent and fun. Even when it is boring, you can use this button to ask the weather, or even ask a joke.
2, game resources and more powerful performance
Have popular casual games such as cool runners, landlords, tank battles, etc. And Glory Box Pro also has Bluetooth extensions. After the Bluetooth handle is connected, users can use the joystick to feel more fun.
The fourth paragraph: Haimi Di H7 (Click for details)
Reason for selection:
1, the remote control design exquisite feel good
The second-generation remote control uses metal brushed texture and the three-generation remote control has protrusions on the back that are more humane and better to hold. Of course, the preferences are based on the orientation of everyone.
2, the system is simple and easy to use
The information is displayed in the form of upper, middle, and lower information. The top is the recommended content rotation. In the middle is the function button, which includes the core content Mango TV. Below is the operation button, the layout is reasonable and logical.
The fifth paragraph: Infinik I9 (Click for details)
Reason for selection:
1, the appearance of refined personality
A streamlined white finish, high-quality plastic design, embellishments on the green side, a little “slippy†on the outside, and a specially designed bottom support wall-mounted mode.
2, the main interface is simple and easy to use
The layout of the main interface is scientific and reasonable and at a glance. All kinds of videos also provide a panoramic view, giving priority to displaying the content that the user is most concerned about, and fully displaying popular video resources.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.8 Layer PCB - Stackup & Cost & Prototype manufacture
What is 8 layer PCB?
The 8 layer PCB is a circuit board with 8 layers that are stacked firmly together with predefined and dependable mutual connections between the layers. Structure of eight layer PCB is more complicated. Nowadays, PCBs frequently have 8 to 12 layers or more, and electronics engineers know that designing for so many layers requires a well-configured layer stack.
8-layer printed circuit boards are usually installed in compact equipment with strict spacing requirements, such as notebook computer motherboard, communication backplane, wearable watches, etc. Because of its complexity and high manufacturing costs, your 8-layer PCB manufacturing should be made by reliable and experienced manufacturers. Jinghongyi PCB has been specially targeting high-end PCB manufacturing and assembly services for 8 years, providing high-quality products and services for various customers. Our advanced production line and fast response team will keep you comfortable and reassured, without any trouble, you can rest assured to place the order with us.
Typical 8-layer PCB stack up methods and guidelines
Standard stackup of 8 layer PCB looks as follows
- Signal1
- Ground
- Signal2
- Power
- Ground
- Signal3
- Power
- Signal4
Eight-layer PCB can be used to add two additional layers, or two planes can be added to improve EMC performance. Most eight-layer circuit boards are superimposed to improve EMC performance, rather than adding additional wiring layers. Compared with 6-layer circuit boards, the cost increase percentage of 8-layer PCB is less than that of 4-layer PCB to 6-layer PCB. Therefore, in order to improve EMC performance, the cost increase is reasonable. Therefore, most 8-layer boards consist of four wiring layers and four planes.
8 Layer PCB Stack up
8 Layer PCB stackup
In short, 8 layer PCB are usually used to improve the EMC performance of circuit boards, rather than increasing the number of layers.
No matter how you decide on the stack layer, it is not recommended to use an 8-layer PCB board with six wiring layers. If you need six routing layers, you should use a 10 Layer PCB board. Therefore, the 8-layer board can be regarded as the six-layer board with the best EMC performance.
Basic Layer of Eight-Layer Circuit Board with Excellent EMC Performance
All signal layers are adjacent to the plane, and all layers are tightly coupled. High-speed signals are buried between planes, so planes provide shielding to reduce the transmission of these signals. In addition, the circuit board uses multiple grounding layers to reduce the grounding impedance.
Other forms of 8-layer PCB stackup
A typical 8 Layer PCB Stackup
0.062[8 layer PCB stackup
0.093[ 8-Layer PCB Stackup
So far, we have also clarified the cost and price differences between 6-layer PCB, 8-layer PCB and 10-layer PCB.
8 Layer PCB thickness
8 LAYER 1.6 MM STANDARD STACKUP AND THICKNESS
8 Layer Stackup - 1.6mm thickness |
||||||
| layer order | layer name | material type | material description | dielectric constant | thickness | copper weight |
| 1 | top | copper | signal | 0.035mm | 1 oz | |
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 2 | inner 1 | copper | plane | 1 oz | ||
| core | 4.6 | 0.3mm | ||||
| 3 | inner 2 | copper | plane | 1 oz | ||
| 7630 | prepreg | 4.7 | 0.2mm | |||
| 4 | inner 3 | copper | plane | 1 oz | ||
| core | 4.6 | 0.3mm | ||||
| 5 | inner 4 | copper | plane | 1 oz | ||
| 7630 | prepreg | 4.7 | 0.2mm | |||
| 6 | inner 5 | copper | plane | 1 oz | ||
| core | 4.6 | 0.3mm | ||||
| 7 | inner 5 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 8 | bottom | copper | signal | 0.035mm | 1 oz | |
| Final board thickness: 1.6mm±0.13mm | ||||||
8-Layer Prototype PCB Manufacturing Service
The 8-layer prototype FR-4 PCB is an 8-layer circuit board, which is firmly stacked together with predefined and reliable interconnection between layers. The 8-layer FR-4 PCB has more complex structure. JHYPCB is a large enterprise located in Shenzhen, China, which can manufacture 8-layer prototype PCB.
JHYPCB can provide you with multi-layer PCB board in accordance with RoHS standard. With laminated material, it can match high temperature in assembly process. Importantly, some lead-free assembly processes will require laminated substrates to withstand temperatures exceeding 260 degrees Celsius or 500 degrees Fahrenheit over a longer period of time. To solve this problem, we have high temperature laminates in stock, so that our customers can meet the higher temperature cycle requirements of some lead-free assembly applications.
JHYPCB is one of the leading 8 layer PCB manufacturers. For more information, pls send email to us.
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