Thông tin thiết kế mạch P6

THE TELEVISION TRANSMITTER The transmission of video images depends on a scanning device that can break up the image into a grid and measure the brightness of each element of the grid. This information can be sent serially or in parallel to a distant point and used to reproduce the image. It is evident that the smaller the size of the grid element, the better the definition of the image. One of the simplest devices which can measure the brightness of light is the phototube