Cold cathode - Wikipedia
WEBCold-cathode fluorescent lamps were used for backlighting of LCDs, for example computer monitors and television screens. In the lighting industry, “cold cathode” historically refers to luminous tubing larger than 20 mm in diameter and operating on …
Cathode-ray tube - Wikipedia
WEBA cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. [2]
Cold Cathode | Light Bulb Types - Bulbs.com
WEBA cold cathode lamp functions by using electricity emitted from cathodes to excite mercury vapors using the process of inelastic scattering in order to create fluorescence, just as a typical linear fluorescent does.
Cold-Cathode Devices | Elektor Magazine
WEBSep 20, 2023 · Cold-cathode devices are a type of gas-discharge device that uses a low-pressure gas to produce light. The simplest cold-cathode device is the neon lamp, which is often used as an indicator light. Other common cold-cathode devices include neon signs, voltage regulator tubes, and gas-discharge surge suppressors.
Cold Cathode Light Tube : 7 Steps (with Pictures) - Instructables
WEBCold Cathodes, or Cold Cathode Fluorescent Lights (CCFLs) are very similar to a normal fluorescent tube used in lighting many offices and signs. These are different in that they do not require a large, high-voltage ballast, but they rather run "cold", with small inverters that amplify voltage to activate a paint coating inside of the tube.
The Quest for the Ultimate Vacuum Tube - IEEE Spectrum
WEBNov 24, 2015 · Tubes in Space: The cold-cathode traveling-wave tube would make it possible to equip even very small communication satellites with powerful RF transmitters. Photo: Sue Tallon. In July 1962, the Telstar 1 satellite took an enormous leap toward the globally connected world we now take for granted.
Cold Cathode - an overview | ScienceDirect Topics
WEBThe electrons in a cold-cathode tube are produced by bombardment of the cathode by ions and/or by the action of a localized high electric field. The voltage drop across such a tube is higher than in the hot-cathode tube because of this mechanism of electron generation, and the current is limited.
Cold Cathode X-Ray Tube (early to mid 1900s)
WEBThe anticathode enters the tube at a 45 degree angle (from the lower right in the photo) with the circular target located in the middle of the bulb. Obviously, the tube lacks a regulator to control the gas pressure—a serious disadvantage if the intent was to use the tube for extended periods.
CCFL Characteristics | Analog Devices
WEBCold Cathode Fluorescent Lamps (CCFLs) are sealed glass tubes filled with inert gases. When a high voltage is placed across the tube, the gases ionize creating ultraviolet (UV) light. The UV light, in turn, excites an inner coating of phosphor, creating visible light.
Cold cathode - Wikiwand / articles
WEBA cold cathode is a cathode that is not electrically heated by a filament. A cathode may be considered "cold" if it emits more electrons than can be supplied by thermionic emission alone. It is used in gas-discharge lamps, such as neon lamps, discharge tubes, and some types of vacuum tube.