Eps 6: What is CRT

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Randy Adams

Randy Adams

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For decades a mainstay of display technology, CRT-based computer monitors and televisions are a dead technology. CRTs have probably never been seen in real life, and believe it or not, that's because they're not.
Core displays are on the decline and have been replaced by flat panel displays that lose less weight, take up less space and consume less power.
TVs have become obsolete in recent years due to the fact that they cost less to manufacture, consume less electricity, have less weight and mass and are more common today than tubes. The falling price of LCD and other competing display technologies is due to their lower costs and lower power consumption. There are a number of other LEDs and high resolution LCD displays available in the current technology, but the older technology is superior in every way, be it light weight, mass-produced, etc.
A cathode ray tube consists of a single, high resolution, low-power, focused, low power system. It consists of two cathodes, one in the middle and one on top of the tube, each with its own power supply and distribution. A cathode ray tube consisting of a medium-sized, wide-angle, light-sensitive, direct focus system with an output current source.
The source of the electron beam is an electron gun, and the gun is located in the narrow cylindrical neck of a crater, which generates a stream of electrons through thermionic emission. A glass tube protrudes from the rear electron gun, which is used to evacuate air from a finished tube.
The glass casing and its components are normally formed in a glass manufacturing plant and delivered to a manufacturer of cathode ray tubes, which forms the fluorescent material for the screen. The three glass components connect to the tube and form the screen itself. CRTs are assembled into monitors, including the monitor itself, the LCD screen and the display unit .
The key color of a CRT is a piece of perforated metal known as a shadow mask that is placed on an electron gun to look at the screen. The entire front of the CRt tube is scanned into a grid that is a fixed pattern, and the parallel lines form the projected image. This image is a computer monitor that shows the image of a CRT connected to a screen, not the actual image. To scan into the pattern, the entire screen must be re-scanned in the same way.
The outer shell, which gives the image tube its characteristic shape, is called the cathode ray tube shell. The cathodes in the radiation tubes consist of a vacuum tube containing one or more electron guns that are used to excite phosphors on the screen to produce the image.
CRT, the electrons emitted by the cathodes, hit the fluorescent materials on the screen and provide a visual signal. The phosphorus on a tube screen is a material that produces the photons produced by the tube directly. T. It glows when it is hit by an electron, and emits light in the form of a red light.
TV cathode ray tube, the focused anode focuses a stream of electrons into a narrow beam and then accelerates it. The electrons pass through the accelerating anodes, and the accelerated electrons collide with the fluorescent material on the screen.
When an electric field is applied to the cathode ray tube, it is attracted by a plate that carries a positive charge. When a voltage of 1V is applied to this plate, the cathode rays are attracted to it. This is the amount of deflection that can be generated when electric fields are applied in a cathode-on-radiation tube.
In modern tube monitors and televisions, the beam is bent by magnetic deflection, a varying magnetic field generated by a coil and driven by an electronic circuit around the neck of the tube. CRTs, televisions and computer monitors bend the electron beam in the same way that oscilloscopes rely on electrostatic deflections. While magnetic deflection is commonly used on television , electrostatic deflection is also used.
In a cathode ray tube , a coil is used to bend the electron beam to the desired amount. The electron beams in cathodes and X-ray tubes move so that they can hit any part of the screen.
Fortunately, there is no need to open the display and expose the tube, and in general it is obsolete. It will take years for companies to bring the expansive oscilloscopes and logic analyzers they used for a CRt screen to market, but that's about it.
If you want to test the benefits of a CRT monitor, prepare for a little work, but take a look at the internal structure of the CRt and its parts now. Details and studies of what exactly works in CR-T's are another topic; but now you have a clear idea of cathode ray tubes. Leave a comment with your question on this topic or on an electrical or electronic project below.