Televisions and color computer monitors contain an average of four pounds of lead. Manufacturers generally employ significant quantities of lead in the glass used to make color CRTs. An electrode of a CRT that is used to focus the electrons into a tight beam. The cathode of a thermionic tube, usually a wire or ribbon, which is heated by current passing through it. The method of deflecting an electron beam by passing it between parallel charged plates mounted inside a cathode-ray tube. Types of Electron Tubes.Įlectrostatic Defection. A flow of electrons that have been focused by an Electrostatic field into a narrow beam. Cathode Ray Tube Electron-Gun Electron Beam. The electron gun produces a highly concentrated stream of electrons. An electrode of a CRT that is equivalent to the cathode and control grid of conventional tubes. In a cathode-ray tube, coils used to bend an electron beam a desired amount. The face of the CRT that is used to display information. The time interval during which the stored information decays to a stated fraction of its initial value. The more electrons allowed to hit the screen, the brighter the output of the CRT. The Control Grid of a CRT is used to control the brightness of the screen, as the Control Grid limits or controls the amount of electronics passing through it hitting the screen. Displays light on a two-dimensional phosphor screen. In an electron tube the electrode that is the source of current flow. The anode or anode button on a CRT is the opening near the back end of the display screen, used to accept a compression lead as a connection. The first and second Anode in the above graphic form the focus section of the CRT. A positive electrode of a two terminal device, toward which the negative ions are drawn. The new position of the electron beam compared original position before the beam passed through deflection plates. The angle of an electron beam induced by the deflection coils of a CRT.
Flat screens handle shock better than CRTs.
CRT displays are in decline, and are being replaced by Flat screen LCD displays that reduce weight, take up less space, and consume less power. A CRT is assembled into a monitor, which includes several other parts, such as a plastic cabinet, electromagnetic shields, circuit boards, connectors, and cabling. An electron beam is focused on a luminescent screen than varied in position and intensity to produce a visible pattern.Ī Cathode-ray Tube is used as computer monitors, television screens or radar displays. This tube is used to display visual electronic signals. An electron tube that has an electron gun, a deflection system, and a screen. "Z" CRT Definitions Cathode Ray Tube Cut-awayĬRT: Cathode-ray Tube.
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