AT248553B -
Indirectly heatable cathode for electrical discharge tubes with a heating wire which is separated from the carrier of the emitting layer by an insulating oxide layer
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Indirectly heatable cathode for electrical discharge tubes with a heating wire which is separated from the carrier of the emitting layer by an insulating oxide layer
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Publication number
AT248553B
AT248553BAT200665AAT200665AAT248553BAT 248553 BAT248553 BAT 248553BAT 200665 AAT200665 AAT 200665AAT 200665 AAT200665 AAT 200665AAT 248553 BAT248553 BAT 248553B
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Publication of AT248553BpublicationCriticalpatent/AT248553B/en
H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
H01J1/02—Main electrodes
H01J1/13—Solid thermionic cathodes
H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
H01J1/22—Heaters
AT200665A1964-03-111965-03-08
Indirectly heatable cathode for electrical discharge tubes with a heating wire which is separated from the carrier of the emitting layer by an insulating oxide layer
AT248553B
(en)
Indirectly heatable cathode for electrical discharge tubes with a heating wire which is separated from the carrier of the emitting layer by an insulating oxide layer
Indirectly heatable cathode for electrical discharge tubes with a heating wire which is separated from the carrier of the emitting layer by an insulating oxide layer
Process for covering a filament for an indirectly heated cathode with a dark-colored insulating layer, filament produced according to this process and use of such filament for the cathode of an electrical discharge tube