Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB28437/46A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/02—Details
H01J17/04—Electrodes; Screens
H01J17/06—Cathodes
H01J17/066—Cold cathodes
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J2893/00—Discharge tubes and lamps
H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
H01J2893/0065—Electrode systems
H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
Landscapes
Circuit Arrangements For Discharge Lamps
(AREA)
Abstract
620,717. Electro - polishing. PHILIPS LAMPS, Ltd. Sept. 23, 1946, No. 28437. Convention date, March 15, 1943. [Class 41] [Also in Group XL (a)] A voltage stabilization tube is provided with one or more anodically-polished cathodes. The electrolyte in the case of nickel cathodes is strong sulphuric acid and the current density is preferably between .2 and 2 amps. per sq. cm., the time for treatment being between one second and one minute.
GB28437/46A1943-03-151946-09-23Improvements in or relating to voltage-stabilizing discharge tubes
ExpiredGB620717A
(en)