Gas-filled discharge tubes with solid cathode

HELECTRICITY H01Electric elements H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

H01J17/00Gas-filled discharge tubes with solid cathode

H01J17/005specially adapted as noise generators H01J17/02Details H01J17/04Electrodes Screens H01J17/06Cathodes H01J17/063Indirectly heated cathodes H01J17/066Cold cathodes H01J17/08having mercury or liquid alkali metal deposited on the cathode surface during operation of the tube H01J17/10Anodes H01J17/12Control electrodes H01J17/14Magnetic means for controlling the discharge H01J17/16Vessels Containers H01J17/18Seals between parts of vessels Seals for leading-in conductors leading-in conductors H01J17/183Seals between parts of vessel H01J17/186Seals between leading-in conductors and vessel H01J17/20Selection of substances for gas fillings Specified operating pressure or temperature H01J17/22Means for obtaining or maintaining the desired pressure within the tube H01J17/24Means for absorbing or adsorbing gas H01J17/26Means for producing, introducing, or replenishing gas or vapour during operation of the tube H01J17/28Cooling arrangements H01J17/30Igniting arrangements H01J17/32Igniting by associated radioactive materials or fillings H01J17/325Current stabilising tubes H01J17/34One or more circuit elements structurally associated with the tube H01J17/36Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for H01J17/38Cold-cathode tubes H01J17/40with one cathode and one anode H01J17/42having one or more probe electrodes H01J17/44having one or more control electrodes H01J17/46for preventing and then permitting ignition but thereafter having no control H01J17/48with more than one cathode or anode H01J17/485Plasma addressed liquid crystal displays [PALC] H01J17/49Display panels H01J17/491with electrodes arranged side by side and substantially in the same plane H01J17/492with crossed electrodes H01J17/494using sequential transfer of the discharges H01J17/495display panels using sequential transfer of the discharge along dielectric storage elements H01J17/497for several colours H01J17/498with a gas discharge space and a post acceleration space for electrons H01J17/50Thermionic-cathode tubes H01J17/52with one cathode and one anode H01J17/54having one or more control electrodes H01J17/56for preventing and then permitting ignition, but thereafter having no control H01J17/58with more than one cathode or anode H01J17/60the discharge paths priming each other in a predetermined sequence H01J17/62with independent discharge paths controlled by intermediate electrodes H01J17/64Tubes specially designed for switching or modulating in a waveguide