A gas-filled tube, also known as a discharge tube, is an arrangement of electrodes in a gas within an insulating, temperature-resistant envelope. Although the envelope is typically glass, power tubes often use ceramics, and military tubes often use glass-lined metal. Gas tubes are tubes whose electrical characteristics are substantially influenced by the pressure and composition of gas contained inside.
Gas-filled tubes exploit phenomena related to electric discharge in gases, operating by ionizing the gas with applied voltage to start electrical conduction. Both hot cathode and cold cathode type devices are encountered. Depending on application, either the glow from the gas or the electric arc or electric glow discharge may be the desired function.
Read more about Gas-filled Tube: Gas-tube Physics and Technology, Lighting and Display Gas-filled Tubes, Gas-filled Tubes in Electronics, List of -tron Tubes
Famous quotes containing the word tube:
“Even crushed against his brother in the Tube the average Englishman pretends desperately that he is alone.”
—Germaine Greer (b. 1939)