Gas filled tube
Gas filled tubes are arrangements of electrodes in a gas within an insulating, temperature-resistant envelope. Although the envelope was classically glass, power tubes often use ceramics, and military tubes often use glass-lined metal.Gas filled tubes operate by ionizing the gas to get conduction. Both hot and cold cathode type devices are encountered. Depending on application, either glow discharge or arc discharge may be emphasised.
Some important examples include the thyratron, krytron, and ignitron tubes.
Specialist low-pressure gas filled tube devices include the Nixie tube and the dekatron. These are used to display numerals.
Neon signage and Neon lamps are other types of low-pressure gas filled tubes.
Xenon flash lamps are gas filled tubes used in cameras and strobe lights to produce bright flashes of light.
A type of gas filled tube called the Geiger-MÃÂüller tube is used to detect and measure ionizing radiation.
One of the proposed designs for a fusion reactor is basically a gas filled tube, the Farnsworth-Hirsch Fusor.
A tube in which electrons move through a vacuum (or gaseous medium) within a gas-tight envelope is called an electron tube.
See also: Vacuum tube
Switching gas filled tubes
Lighting and display gas filled tubes
Other types of gas filled tubes
External links
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