Modern TV sets with CRT (the picture tube)

Beginning of the development of color television and color TV I told You in the last article, and now we will talk about the modern color TV sets that used as the screen tube. Ready?, then we'll start ad

A new round of domestic TV began with the 1977 of the year when was released the first televisions to hybrid assemblies (microcircuits), there was a complete rejection of the use of lamps in the televisions, although the "tube model" was still produced for some time (well need to have somewhere their reserves to use ag ) One of the first models of the so-called "Ufimtsev" Slavutych C-202 with a screen diagonal of 61 cm OPENCT interpreted as: Theneficiary Wpoluprovodnikov Andintegralny MDolny Cvatnoy TTV set

Slavutich C-202 OPENCT

Let's look at it closer bs by eliminating the use of lamps, significantly reduced power consumption, he did not need a separate autotransformer (although this is debatable, it is not so good at keeping low voltage network), did not have to wait fifteen minutes before its full launch as a "high" appears immediately, but the image in about 10 seconds, after warming up, intensity. However, there were downsides, and very significant. Fast start-up and sudden appearance of the high voltage reduced the life of the tube, and his "famous" character scan two thyristors KU-221 the wizard will remember all the "good" word.

In 1984 year first USCT (neficiary Withstationary Cvatnoy TTV set) Electron C-380 CRT 51ЛК2Ц, released in Voronezh (according to the sticker) under the close supervision of foreign colleagues and their equipment however, according to other sources, it was fully imported CRT (they still work so far (!!!) and sour is not going the quality was something aiay ) zamowieniem rays, but this, just below

Electron C-380 with tube 51ЛК2Ц

It was a serious leap forward: the TV was used switching power supply, reducing power consumption up to 80-90W, it had the building blocks used in almost all subsequent models, the opportunity to seriously upgrade and improve "it's a miracle", though, due to standard connectors and dimensions of the modules, obsolete can be replaced later.

To "Electron" became possible to connect a remote control unit (first 8-and canalso (Kaka is still the same... ac ), and 55 and 90 channel system with a graphical display of information), decoder PAL, to be able to see in color movies first brought Vidic the interface blocks at a low frequency (LF input-output type "Tulip"), to set the extended reception blocks for receiving a cable TV... ab

Of course, not everything went smoothly, the master still remember the "perversion" constructors called "horizon" and "Electron" 5-series with the ever-problematic distancionnoe and channel the crumbling of the body "alpha", but the best models of that time I would say "E-Ц423ДИ" excellent and nice plastic case and model 4305 with built-in good remote control, but the case.... there's a little more modern to make

Electron-Ц423ДИ

The story of the Soviet TV is finished, almost everything that happened next was either a perversion or "lapped" with foreign schemas and models, and then the factories began to go only Assembly models foreign manufacturers, in a modern "Electronic" and "Horizons" little remains of these famous brands bn

In the 90-ies, after the collapse of the Soviet Union and the opening of borders in our country a powerful stream gushing wave of imported equipment, first it has brought people who have been there, and after that imported TV sets have become hard to sell in our stores. Compared to our TVs, the import won on all parameters (dimensions, functions, colors, clarity), except for the price, and such a "trifle" as a remote control - were the norm

Electron-Ц500

At a time when our "max" was a CRT with a screen diagonal of 61 cm and geleobraznye arrangement of guns that require serious module information rays), abroad, has produced diagonally up to 72 cm zamowieniem rays. What does it mean? Now tell

The first color picture tubes without the "Samovodene" beams used mask (metal plate) with a circular hole, a colored phosphor on the inner surface of the screen of the CRT, as there was a "triangle" as the electron gun

the work of the kinescope without Samovodene rays

In tubes with zamowieniem, the gun is horizontal, the shadow mask was able to skip a larger number of emitted electrons, in addition, this arrangement allowed to occupy a large area of the phosphor screen, so the glow became brighter, and dark spots - less, as well eliminated the need for a separate block information rays

the work of the tube with zamowieniem rays

A significant role in development was played by a Japanese Corporation SONY issued in 1964 the first solid-state (tubeless) TV, and 1968 - having developed his famous "Trinitron" - CRT, with a fully separate electrodes for each of the three primary colors (the guns) and in 1982 year aperture grille. In tubes with aperture grille instead of a triad plot of the three phosphor "dots": red, green and blue) uses very thin vertical phosphor yarn containing stripes of three colors. The distance between these strands was minimal, which greatly increased the clarity of the image, and instead of aluminum mask with holes was used the thin filament (wire) strung from the bottom up

the Principle of Sony-Trinitron

The next step was the "flattening" of the tube. If earlier the screen was a part of "spheres", in the future - it is part of the cylinder (again, the merit of SONY), and then, at the end of the 90s firm Thomson introduced the first TV with a fully flat screen CRT. It is a pity only that "showered" these Kina much faster than hoped their producers, in contrast to the same "ancient" Videocolor that work to this day with perfect colors, although are not absolutely flat ay

At the same time development work was performed to increase the angle of deflection of the beams in the kinescope, in 1961 year Thomson released the first CRT TV 110 degrees, which reduced the depth of the TV Cabinet, although, in fairness, it should be noted that the TVs manufactured by Thomson was always just a huge uncomfortable "square" buildings, this is a paradox bk

Thomson with the CRT 110 degrees

The pursuit of the "plane" of the screen and reduction of the long neck of the tube had not only positive to very large negative can be attributed to the deterioration information of the rays at the edges of the CRT, read the subtitles, it becomes more difficult, and televisions demanded a very complex and powerful, blocks of correction. This is due to the fact that the beam was to pass different distance, providing it with "focus" in the center, we began to lose its edges, the same was with the correction: for the same reason (different distance from the gun to various areas of a screen of a CRT) letters on the subtitles and the actors ' faces began to change its "width," depending on whether they were middle or the edges

Flat screen CRT

You would have to stop, but no, the largest company for the production of picture tubes LG.Philips Displays announces the creation of "thin" cropped tube: Slim, and then Super and Ultra Slim.The angle of deflection of rays reaches 150 degrees, housing TV becomes shorter in the half with an impressive screen size up to 72 cm or 29 inches)

LG.Philips Displays - Slim, Super Ultra Slim

All is good, just lots of TVs with such screens became huge, due to the thick 10-inch glass, but otherwise, the tube will simply collapse, because inside it is a vacuum (nothing ab ). The normal and correction can be forgotten forever, and the reliability of the electrical circuits inside ... but it was placed perfectly in the closet, not bulging half a meter from it ap

The last thing left to tell here, is about 100Hz TVs, more precisely, on TV, with a frequency of 100Hz vertical scan, read all the secrets in the article: scanning Frequency: 50 and 100Hz

Link to this story: http://en.rem-tv.net/publ/3-1-0-47

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