Teflon is Polytetrafluoroetylene, referred to as Teflon, PTFE, F4, etc.It is also known as Teflon, Teflon, Teflon, Teflon and so on because of its pronunciation.Polytetrafluoroethylene (ptfe) is a kind of plastic, which is used to manufacture heaters. It has been successfully used in chemical equipment heating. It has the characteristics of multi-layer and three-dimensional heating.
The working pressure, working temperature, heat transfer coefficient and installation method of the teflon heater vary greatly according to different types, different shell materials and different thermal media.The chemical properties of teflon are very stable and the corrosion resistance is especially good.The surface of the teflon tube is smooth and moderately flexible, so it is not easy to scale due to the slight vibration when using it.The teflon heater is small in size and compact in structure. The heat transfer area per unit volume of the equipment is more than 4 times of that of the shell heater.Flexible teflon tubes work safely under shock and vibration of fluids, and the tubes can be made into special shapes as needed.Teflon has low thermal conductivity, poor mechanical properties than metal, and is not resistant to high temperature.The use of small diameter, thin wall, although the thermal conductivity and mechanical properties of compensation, but can only be used in the case of low pressure and low temperature.The production of teflon steam heater and teflon hot water heater has become more and more mature, and widely used in chemical industry, medicine, pickling and other corrosive industries.
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1 provides the best image quality:
In the VGA signal display, the image quality of the notebook is the highest. The CPU will display the data to be displayed on the graphics card. After the graphics card is processed to form a graphic signal (digital signal) to be displayed, the digital signal is directly driven to the LCD screen to form the display signal of the notebook. This is the most "original" signal. After any treatment and loss. After the graphic signal (digital) is converted by D/A to form an RGBHV signal, it needs to go through the A/D process when it reaches the display device, regenerate the digital signal, and drive the LCD and other devices. The signal at this time goes through D/A, D/A conversion results in losses in terms of bandwidth, signal-to-noise ratio, etc. For example: According to the Nyquist sampling principle, the maximum analog bandwidth is only half of the sampling clock, and the signal-to-noise ratio is only about 56dB (by 8bit quantization) . However, if the graphics signal (digital) is subjected to parallel/serial conversion to form a DVI signal output and then transmitted to the display device via the DVI, the serial/parallel conversion is only required to directly drive the LCD and other devices. This process does not pass through A. /D, D/A conversion will not cause signal loss.
2 reduces the loss of the signal in the transmission process:
During the transmission of analog signals, due to the amplitude and frequency stability of the transmission system, high- and low-frequency interference, power ground interference and reflection, etc., the signal loss is severe. It is very difficult to solve and deal with the above problems in the project. Some can't even be solved. However, these problems do not exist during digital signal transmission. The greatest advantage of digital transmission lies in its strong anti-interference ability and reconstruction. In simple terms, as long as the error in "0" and "1" is not detected in the transmission process, no error occurs. The signal at the receiving end is correct and lossless. The problem that is difficult to solve in analog transmission does not exist in the digital transmission process. This is a solution that fundamentally solves the problem, ensuring that the signal reaching the display device is the same as the signal displayed by the notebook. , Give full play to the advantages of display devices, and obviously improve the display effect of the entire system.
Advantages of DVI HD Matrix Signals
The advantages of DVI high-definition matrix signals: