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
GB3697/22A
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.)
Koninklijke Philips NV
Original Assignee
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.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Publication of GB175274ApublicationCriticalpatent/GB175274A/en
H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/38—Cold-cathode tubes
H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J61/00—Gas-discharge or vapour-discharge lamps
H01J61/64—Cathode glow lamps
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
H01J2893/0067—Electrode assembly without control electrodes, e.g. including a screen
Landscapes
Circuit Arrangements For Discharge Lamps
(AREA)
Abstract
175,274. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Feb. 9, 1921, [Convention date]. Vacuum tubes.-Several glow discharges in series are produced in a single lamp, for instance, three discharges in a lamp at 220 volts. A series resistance is unnecessary.
GB3697/22A1921-02-091922-02-08Improvements in or relating to electric glow discharge lamps
ExpiredGB175274A
(en)