WHAT IS A CRT TV?

What is a CRT TV? A CRT television is a type of television that was most widely used back before the invention of the flat screen television. CRT stands for cathode ray tube. There are actually a number of different types of cathode ray tubes, but they all are similar in many ways.

What is a CRT TV? The CRT in a CRT TV is the cathode ray tube, which is essentially a vacuum tube that contains one or more electron guns as well as a fluorescent screen that is used for viewing images. It has a way of accelerating and deflecting electron beam(s) onto television screens in order to create the actual images. The images can symbolize electrical waveforms in an oscilloscope, and pictures in television screens and computer monitors.

What is a CRT TV? CRTs use evacuated glass envelopes, which are large, deep, relatively heavy, and fairly fragile. For safety reasons, the face is usually made out of a thick lead glass. This is done so it can be highly shatter-resistant and so it can block the majority of X-ray emissions, especially when the CRTs are being used in consumer products.

What Is A CRT TV? A Television made with a Cathode Ray Tube

What is a CRT TV? In both CRT television sets as well as CRT computer monitors, the whole front area of the CRT tube is systematically and repetitively scanned in a raster, which is a fixed pattern. The images are produced by using a process of controlling intensity amounts of all three electron beams. There is one electron beam for each of the additive primary colors (red, blue, and green) with the video signal utilized as a reference.

In the modern CRT televisions and monitors, magnetic deflection is used to bend the beams. Magnetic deflection is a varying magnetic field that is generated by coils and is also driven by the electronic circuits that are around the tube’s neck.

In recent years, CRT TVs have been all but outdated by newer display technologies like LCDs, plasma displays, and OLEDs, all of which cost less to manufacture, consume less power, and are lower in weights and bulks.

Recycling of CRT Televisions

What is a CRT TV, when it comes to electronic waste? As e-waste, CRT TVs are one the most difficult types of TVs to recycle. CRTs contain a large concentration of phosphors and lead. Both of these are necessities for its display.

A number of companies located in the U.S. charge small fees for the collection of CRT TVS as well as other CRT items. Then, they subsidize their labor via the sale of wire, printed circuit boards and copper. Leaded CRT glass gets sold so that it can be re-melted either into other CRTs or broken down to be used in the construction of roads.

So, what is a CRT TV? CRT TVs are much harder to come across these days, because newer technologies like LCDs, OLEDs, plasma displays and other technology has pretty much replaced them.

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Source:• http://www.ehow.com/facts_5063292_crt-tvs.html

• http://en.wikipedia.org/wiki/Cathode_ray_tube• http://www.allgreenrecycling.com/blog/what-is-a-crt-tv/