GB533451A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB533451A
GB533451A GB24293/39A GB2429339A GB533451A GB 533451 A GB533451 A GB 533451A GB 24293/39 A GB24293/39 A GB 24293/39A GB 2429339 A GB2429339 A GB 2429339A GB 533451 A GB533451 A GB 533451A
Authority
GB
United Kingdom
Prior art keywords
electrode
discharge
aug
auxiliary
main electrode
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
GB24293/39A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB533451A publication Critical patent/GB533451A/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
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

533,451. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 23, 1939, No. 24293. Convention date, Aug. 26, 1938. Drawings to Specification. [Class 39 (i) ] In a discharge lamp with filamentary electrodes coated with emission material and heated at least in starting by the passage of current, two auxiliary electrodes are provided for each main electrode, one connected to each of the leads, so that whichever side of the electrode is connected to the main supply during the discharge one auxiliary electrode will act as an anode and lessen the bombardment of the main electrode. For this purpose the auxiliary electrode may consist of V-shaped pieces of wire facing each other in a plane slightly behind the main electrode. A starting circuit comprising a heating circuit controlled by a switch is described. The lamp may be of the type containing inert gas and mercury, and may be lined with fluorescent material, such as zinc silicate or calcium tungstate.
GB24293/39A 1938-08-26 1939-08-23 Improvements in and relating to electric discharge devices Expired GB533451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US533451XA 1938-08-26 1938-08-26

Publications (1)

Publication Number Publication Date
GB533451A true GB533451A (en) 1941-02-13

Family

ID=21983555

Family Applications (2)

Application Number Title Priority Date Filing Date
GB24293/39A Expired GB533451A (en) 1938-08-26 1939-08-23 Improvements in and relating to electric discharge devices
GB15339/41A Expired GB553184A (en) 1938-08-26 1941-11-28 Improvements in and relating to composite electrodes for gaseous electric discharge devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB15339/41A Expired GB553184A (en) 1938-08-26 1941-11-28 Improvements in and relating to composite electrodes for gaseous electric discharge devices

Country Status (4)

Country Link
DE (1) DE731254C (en)
FR (2) FR859109A (en)
GB (2) GB533451A (en)
NL (1) NL57005C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1958227A1 (en) * 2005-11-22 2008-08-20 Trojan Technologies Inc. Radiation lamp and radiation source module incorporating same
CN116334557A (en) * 2023-03-30 2023-06-27 浙江大学 Fluorine-erbium co-doped tin oxide film and preparation method and application thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1958227A1 (en) * 2005-11-22 2008-08-20 Trojan Technologies Inc. Radiation lamp and radiation source module incorporating same
EP1958227A4 (en) * 2005-11-22 2010-09-22 Trojan Techn Inc Radiation lamp and radiation source module incorporating same
US9895457B2 (en) 2005-11-22 2018-02-20 Trojan Technologies Radiation lamp and radiation source module incorporating same
CN116334557A (en) * 2023-03-30 2023-06-27 浙江大学 Fluorine-erbium co-doped tin oxide film and preparation method and application thereof

Also Published As

Publication number Publication date
FR859109A (en) 1940-12-11
NL57005C (en)
DE731254C (en) 1943-02-04
GB553184A (en) 1943-05-11
FR51918E (en) 1943-05-24

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