- information about the principles of operation of the TV
you can find a huge range of equipment to suit all tastes and budgets in modern stores.And, despite the popularity of LCD and plasma models, disassemble, how the TV, the best on the example of the models produced by the cathode ray tube.Thus it will be much easier to understand how television really is.
In general, you need to understand how the image transfer process.It is quite simple and intuitive.The cameras are equipped with special light-sensitive components, which are able to convert light radiation Electrosignal in the desired format.Specialists receive this same signal is further processed and sent to the air.If you look at the rear surface of the TV, then it is possible to find three special electronic "guns."Its name they received because of the special oval-oblong shape.These details are responsible for the production of electron beams from the received television broadcast signals.
After their creation, such beams are directed to the inside of the device, as a result of contact which receives illumination of three different colors - blue, green and red.This is possible due to the special surface coating agent called "phosphor".That said colored glow and manages to create the entire picture, which was a result of the viewer is watching on your TV.
But this simple scheme is more about old unimproved device.It will be interesting to understand how TV works, as an example of 3D-models popular today.Scheme in this case will be more complex and multi-step.Of course, the viewer, sitting behind the screen of the TV does not falls into three dimensions, it is only an illusion created by the device quality.It is based on certain principles - because each person's eyes are not located next to each other, but at some distance.Hence, each one showing the same image, but at different angles, it is possible to push the brain to create two images at once.As a result, there is the same three-dimensional image.
The same factor is used in the film industry to create a unique 3D-pictures.For the first time this method has been used in black-and-white film to give a picture of volume and greater realism.The two films, resulting in demonstrations at different angles, the images are combined together.A special color filter allows you to modify each of them.To enjoy the get the effect can only equip special glasses.Their peculiarity lies in the lenses, dyed two different colors.Thanks to them, the same image is shown the eyes at different angles.In recent years, for an even more realistic images are increasingly beginning to be used another way.In it instead of a color changes the light waves are converted.This transformation of fixed human eyes.To view these films require glasses with lenses of different polarization.
interesting turned and method of operation of plasma TVs.In this embodiment of the image formation does not comply "gun", and a special item in the flask filled with gas, with a glass mesh embedded electrical conductors.Under the influence of the electricity from the gas plasma is formed, which helps to activate the luminous fryuorestsiruyuschih components.In an image of a huge number - thousands.Manage this process falls to the processor, which creates the image, choosing the color of light of each individual pixel.Such TVs have many advantages.For example, perhaps their creation with huge screens.And, besides, all the dynamic scenes are as clear as possible.It is equally important that the screen of such devices does not have harmful radiation.True discussed TVs are expensive, but still very actively consume electricity.
have LCD models the process of obtaining an image similar to the previous version, but still has its own characteristics.One of the main parts of a special lamp is located in the device.Its light passes through a liquid crystal matrix.The latter, together with the processor is involved in the formation of a color image by passing it through special filters.Compared with older models equipped with CRT, such variants boast sharper images without the unpleasant flicker.They also, like the previous one, this model does not have harmful radiation and, most importantly, get slim, light and compact.Like the TV and such thrifty owners, because they are able to serve its owner for over 20 years and at the same time the minimum energy consumption.
But there is a discussion of LCD models and some disadvantages.Of course, first of all it is rather high cost, which increases with its size.Also in this list, you can add a small viewing angle, lower quality demonstration of dynamic scenes (in contrast to the previously discussed versions), as well as a weak contrast to some of the individual models.Introducing the principles of a wide variety of TVs are likely the audience will be more interesting and exciting to watch them.But on their own to try to dismantle the device and study its internal structure in greater detail - not to be.This can cause serious damage to the TV.