GB1126661A - Improvements in or relating to gas-filled electric discharge devices - Google Patents

Improvements in or relating to gas-filled electric discharge devices

Info

Publication number
GB1126661A
GB1126661A GB47157/64A GB4715764A GB1126661A GB 1126661 A GB1126661 A GB 1126661A GB 47157/64 A GB47157/64 A GB 47157/64A GB 4715764 A GB4715764 A GB 4715764A GB 1126661 A GB1126661 A GB 1126661A
Authority
GB
United Kingdom
Prior art keywords
per cent
alloy
cold cathode
cathode
gas
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
GB47157/64A
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.)
MO Valve Co Ltd
Original Assignee
MO Valve 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 MO Valve Co Ltd filed Critical MO Valve Co Ltd
Priority to GB47157/64A priority Critical patent/GB1126661A/en
Priority to US508463A priority patent/US3374382A/en
Publication of GB1126661A publication Critical patent/GB1126661A/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
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/10—Anodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • 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
    • 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
    • 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
    • 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

  • Lasers (AREA)

Abstract

1,126,661. Cold cathode tubes. M-O VALVE CO. Ltd., and R. W. YOUNG. 12 Nov., 1965 [19 Nov., 1964; 29 June, 1965], Nos. 47157/64 and 27507/65. Heading H1D. In a gas-filled electric discharge device of the kind including a trigger electrode interposed between an anode and a cold cathode, the cold cathode comprises a mass of solid material adhering to an electrically insulating support, e.g. part of the envelope, at least 30 atomic per cent of which material consists of a metal having a latent heat of vaporization not greater than 50 kilocalories per mole and a vapour pressure at 1000‹ C. of not less than 0À1 torr. The solid material may be a metal which may be incorporated in an alloy and may, for example, comprise Cd, Zn, Mg, Bi, Cs, K or Ba. As shown, the cathode 2 comprises 2 c.c. of Cd, Zn or a Cd-Zn alloy in contact with a W rod 6, and is used in a surge diverter comprising trigger electrode 4 and anode 3. The tube contains argon at a pressure of 0À29 torr. The ready production of Cd and/or Zn vapour upon initiation of a discharge permits the use of lower triggering voltages. Specific dimensions and operating voltages are given. The cathode may alternatively comprise a low melting point alloy of 33À6 Atomic per cent Cd and 66À4 Atomic per cent Sn.
GB47157/64A 1964-11-19 1964-11-19 Improvements in or relating to gas-filled electric discharge devices Expired GB1126661A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB47157/64A GB1126661A (en) 1964-11-19 1964-11-19 Improvements in or relating to gas-filled electric discharge devices
US508463A US3374382A (en) 1964-11-19 1965-11-18 Cathode for use in gas-filled electric discharge devices comprising cadmium, zinc, tin and alloys thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB47157/64A GB1126661A (en) 1964-11-19 1964-11-19 Improvements in or relating to gas-filled electric discharge devices

Publications (1)

Publication Number Publication Date
GB1126661A true GB1126661A (en) 1968-09-11

Family

ID=10443953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47157/64A Expired GB1126661A (en) 1964-11-19 1964-11-19 Improvements in or relating to gas-filled electric discharge devices

Country Status (2)

Country Link
US (1) US3374382A (en)
GB (1) GB1126661A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304990A (en) * 1995-09-08 1997-03-26 Eev Ltd Switching arrangements
US5994850A (en) * 1995-09-08 1999-11-30 Eev Limited Switching arrangements wherein a cylindrical trigger electrode is arranged around a gap between an anode and cathode for establishing a discharge therebetween

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3487254A (en) * 1969-01-16 1969-12-30 Perkin Elmer Corp Alloy for hollow cathode lamp
US3904910A (en) * 1973-11-23 1975-09-09 Ericsson Telefon Ab L M Gas-filled discharge overvoltage protector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB896744A (en) * 1959-10-19 1962-05-16 Commw Scient Ind Res Org Improvements in and relating to atomic spectral lamps
US3183393A (en) * 1962-04-20 1965-05-11 Westinghouse Electric Corp Discharge device
GB1008340A (en) * 1963-05-20 1965-10-27 M O Valve Co Ltd Improvements in or relating to liquid cathode electric discharge devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2304990A (en) * 1995-09-08 1997-03-26 Eev Ltd Switching arrangements
GB2304990B (en) * 1995-09-08 1999-09-01 Eev Ltd Switching arrangements
US5994850A (en) * 1995-09-08 1999-11-30 Eev Limited Switching arrangements wherein a cylindrical trigger electrode is arranged around a gap between an anode and cathode for establishing a discharge therebetween

Also Published As

Publication number Publication date
US3374382A (en) 1968-03-19

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