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GB414201A - Improvements in hot cathode discharge tubes - Google Patents

Improvements in hot cathode discharge tubes

Info

Publication number
GB414201A
GB414201A GB1504233A GB1504233A GB414201A GB 414201 A GB414201 A GB 414201A GB 1504233 A GB1504233 A GB 1504233A GB 1504233 A GB1504233 A GB 1504233A GB 414201 A GB414201 A GB 414201A
Authority
GB
United Kingdom
Prior art keywords
auxiliary electrode
discharge
discharge tubes
heated
general electric
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
GB1504233A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1504233A priority Critical patent/GB414201A/en
Publication of GB414201A publication Critical patent/GB414201A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel

Landscapes

  • Discharge Lamp (AREA)

Abstract

414,201. Discharge tubes. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and RANDALL, J. T., c/o General Electric Co., Wembley, Middlesex. May 24, 1933, No. 15042. [Class 39 (i).] In a discharge tube, such as a lamp, which is adapted to be energized by alternating current, and is provided with thermionic main electrodes, heated independently of the discharge, and also with an auxiliary electrode placed near a main electrode and connected through a resistance either to the opposite main electrode or another auxiliary electrode adjacent thereto, means are provided whereby the auxiliary electrode can be heated independently of the discharge to facilitate degassing or to improve starting. The auxiliary electrode may consist of a tungsten spiral which surrounds a rod of barium oxide as described in Specification 344,497, and it may be heated by an element connected to a transformer. By this means it is stated that the pressure of a filling of neon can be reduced to 2 mms.
GB1504233A 1933-05-24 1933-05-24 Improvements in hot cathode discharge tubes Expired GB414201A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1504233A GB414201A (en) 1933-05-24 1933-05-24 Improvements in hot cathode discharge tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1504233A GB414201A (en) 1933-05-24 1933-05-24 Improvements in hot cathode discharge tubes

Publications (1)

Publication Number Publication Date
GB414201A true GB414201A (en) 1934-08-02

Family

ID=10052022

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1504233A Expired GB414201A (en) 1933-05-24 1933-05-24 Improvements in hot cathode discharge tubes

Country Status (1)

Country Link
GB (1) GB414201A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844967A1 (en) * 1978-10-16 1980-04-30 Wolff System Service Gmbh STAINLESS FLUORESCENT LAMP FOR A RADIATION DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844967A1 (en) * 1978-10-16 1980-04-30 Wolff System Service Gmbh STAINLESS FLUORESCENT LAMP FOR A RADIATION DEVICE

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