4K TV has become a popular term. After spending a lot of time to popularize 1080P, 4K has quickly become the vane of TV development. However, in the market where 1080P film sources have just become popular, there are still many problems faced by 4K TVs. One is the film source, and the other is that the current price of 4K TVs is relatively high.
There are many TV manufacturers in China, including traditional TV manufacturers and emerging internet TV manufacturers. But no doubt they are all doing the same thing. Compared with 4K TVs of international mainstream brands, 4K TV products launched by these manufacturers have some advantages in terms of parameters and selling prices. However, on the strength of the brand, the high-end series still has some distances.
Skyworth 55G8200 TV package
Recently, the evaluation room received a Skyworth 55-inch G8200 Health Cloud TV, and then we came out of the box.
The buddy is seriously using the tool to open the package. This is what the editorial partner likes to do everyday, out of the box!
After opening the box, you will see, of course, a white foam filling.
The first thing to put on the outside of the pack is the TV box.
The base's packaging is not too "luxury". There are two metal brackets, two brackets and accessories connected to the TV. In fact, these accessories are protective, just because they can be seen more directly inside the accessories, so the accessories will be displayed directly.
Pulling the TV out of the package requires two people to complete it.
After removing the protective cover of the TV, you see the whole of the TV. First of all, what people see at first glance is its narrow border. Whether it is a TV product or a mobile phone product, the narrow border seems to have become the pursuit of many manufacturers. Of course, the narrow border TV is indeed more beautiful. The 55G8200 chose gold as its overall color.
TV accessories are not much, the biggest feature is to support the "squirrel" feature of the remote control, as well as somatosensory camera. Another AV video line is actually very common. From the start feel, the remote control feels good and workmanship is OK, and the middle direction button with a scroll wheel operation.
The process of installing the base is not complicated, that is, installing two screws up and down, because the TV package does not distribute tools, so the installation must bring their own tools to install the base on the TV. There are many ways to install the base, not limited to one, "eight" shaped base can be arbitrarily adjusted to "outside eight", "inner eight", "left and right" and "right and right" in four ways. Of course, if you don't like to use a pedestal, you can hang it on the wall.
The installation of the somatosensory camera is very simple and can be done without any tools, directly above the TV. However, after the installation is completed, the somatosensory camera is still somewhat loose and unstable, but it can also be ignored for products such as TVs that do not move very often.
There is no switch on the TV (only the four-way direction key), the power will enter the standby state after plugging in and turning on the TV needs to operate on the remote controller. The flying mouse mode needs to be enabled on the remote control before it is enabled. By default, the remote control of the remote control and ordinary TV is not much different.
Because there is no access to any TV source, the system will prompt the program to be empty after entering the system. However, after entering the system, you can set up Wi-Fi connection to watch network video resources, which is not much different from ordinary TV boxes. The Skyworth 55G8200 TV supports 2.4GHz/5GHz dual-band Wi-Fi and Bluetooth 4.0.
Interfaces, Skyworth 55G8200 is relatively rich. Equipped with RF input (analog + digital), AV input, 4K USB3.0 interface, 4K USB2.0 interface, 4K HDMI 1.4 interface, RJ-45 network interface, MHL interface, optical audio output, subwoofer output, CA card slot and SD card slot.
The 55G8200 processor uses the first 14-core processor (1.5GHz A9 4-core CPU, Mail450 8-core GPU and 2-core VPU) with domestic intellectual property rights, 2GB DDR3 memory and 8GB eMMC flash memory. Comes with two USB ports (one USB 3.0, one USB 2.0) and supports up to 2T external removable hard drives or 64GB SD card expansion storage. Supports direct decoding of H.265 and H.264 format resources.
The 55G8200 uses the LG Dispaly's four-color 4K IPS A+ display (four-color WRGB, officially adding white sub-pixels to increase screen brightness and contrast), with a maximum resolution of 38402160, a viewing angle of 178 degrees, and color gamut coverage. The rate reaches NTSC 100%. Judging from the above parameters, the display quality is still very high, and the actual performance is also good.
The system platform uses cool open, cool open system is based on Android 4.4 development. So in addition to being able to watch Internet TV resources, you can also install TV applications to achieve more features. In addition, the TV-equipped somatosensory camera has been pre-installed with a "future hero" somatosensory game.
In the system setting, the display mode of the screen can also be adjusted so as to achieve a display effect more in line with requirements. The speaker supports DTS decoding and SRS surround sound technology. After the simple experience, the 55G8200's sound quality is normal and bass is not strong.
The effect of using the 55G8200 to watch 4K sources is still very good, but with the current 4K resources being so low, it will take a while to expect to experience the 4K experience.
An impulse turbine is a type of steam turbine where the rotor derives its rotational force from the impact force, or the direct push of steam on the blades.
The impulse turbine consists of a rotor mounted on a shaft that is free to rotate. Attached to the rotor are a set of curved blades. Nozzles then direct the high pressure and high temperature steam towards the blades of the turbines. The blades catch the impact force of the rapidly moving steam and rotate from this force.
The Impulse Principle
The steam at high pressure enters through a stationary nozzle of a steam turbine, as a result the pressure of the steam is decrease and an increase in steam velocity. As a result of increased steam velocity steam pass through the nozzle in the form of a high-speed jet. This high-velocity steam hit the properly shaped turbine blade, as a result, the steam flow direction is changed. The effect of this change in direction of the steam flow will produce an impulse force. This force cause the blade move, thereby the rotor will start to rotate.
The force applied to the blade is developed by causing the steam to change the direction of flow (Newton`s 2nd Law – change of momentum). The change of momentum produces the impulse force.
Impulse Turbine Working:
In the impulse turbine pressure drops and the velocity increases as the steam passes through the nozzles. When the steam passes through the moving blades the velocity drops but the pressure remains the same.
The fact that the pressure does not drop across the moving blades is the distinguishing feature of the impulse turbine. The pressure at the inlet of the moving blades is same as the pressure at the outlet of moving blades.
Impulse Steam Turbine
Impulse Steam Turbine
Shandong Qingneng Power Co., Ltd. , https://www.steamturbine.be
