GB495666A - Improvements in negative glow electric discharge lamps - Google Patents

Improvements in negative glow electric discharge lamps

Info

Publication number
GB495666A
GB495666A GB2519137A GB2519137A GB495666A GB 495666 A GB495666 A GB 495666A GB 2519137 A GB2519137 A GB 2519137A GB 2519137 A GB2519137 A GB 2519137A GB 495666 A GB495666 A GB 495666A
Authority
GB
United Kingdom
Prior art keywords
coating
oxide
electric discharge
discharge lamps
layer
Prior art date
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
GB2519137A
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to GB2519137A priority Critical patent/GB495666A/en
Publication of GB495666A publication Critical patent/GB495666A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • 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)

Landscapes

  • Discharge Lamp (AREA)

Abstract

A negative-glow discharge lamp comprises at least one electrode which consists of a thin metal layer on an insulating support, the layer extending through the seal to form a leading-in conductor; the layer may serve as a stabilizing impedance. The coating may be formed by dipping the support, e.g. the glass bulb, into a colloidal solution of tungstic oxide; the solution is dried and reduced to tungsten. The thickness of the coating may be increased by successive dippings alternating with reductions of the oxide; partial reduction of the oxide or reoxidation of the metal may be used to adjust the impedance of the coating.
GB2519137A 1937-09-16 1937-09-16 Improvements in negative glow electric discharge lamps Expired GB495666A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2519137A GB495666A (en) 1937-09-16 1937-09-16 Improvements in negative glow electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2519137A GB495666A (en) 1937-09-16 1937-09-16 Improvements in negative glow electric discharge lamps

Publications (1)

Publication Number Publication Date
GB495666A true GB495666A (en) 1938-11-17

Family

ID=10223701

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2519137A Expired GB495666A (en) 1937-09-16 1937-09-16 Improvements in negative glow electric discharge lamps

Country Status (1)

Country Link
GB (1) GB495666A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249754A (en) * 1962-03-26 1966-05-03 Beckman Instruments Inc Double beam fluorometer using an alternately activated double beam lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249754A (en) * 1962-03-26 1966-05-03 Beckman Instruments Inc Double beam fluorometer using an alternately activated double beam lamp

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