US2864024A - Glow-discharge tube - Google Patents

Glow-discharge tube Download PDF

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Publication number
US2864024A
US2864024A US543563A US54356355A US2864024A US 2864024 A US2864024 A US 2864024A US 543563 A US543563 A US 543563A US 54356355 A US54356355 A US 54356355A US 2864024 A US2864024 A US 2864024A
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US
United States
Prior art keywords
discharge tube
glow
anode
cathode
emission
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 - Lifetime
Application number
US543563A
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English (en)
Inventor
Ahsmann Gerardus Josephu Marie
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.)
US Philips Corp
North American Philips Co Inc
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US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US2864024A publication Critical patent/US2864024A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron

Definitions

  • This invention relates to glow discharge tubes, the cathode of which is activated by alkaline earth oxides or similar materials.
  • the present invention has for its object to provide a glow discharge tube which permits the use of a higher ignition voltage without the occurrence of anode drop during operation.
  • the anode in accordance with the invention in a glow discharge tube comprising a cathode activated by alkaline earth oxides or such like materials, the anode consists, at least at its surface, of gold, silver or thorium.
  • the invention is based on the realisation that activating material from the cathode easily gives rise to electron-emission at the anode as a result of impinging photons, metastable atoms ice and possible electrons from the discharge tube.
  • This anode-emission involves an anode drop.
  • the anodeemission is now reduced by means of the layer of emission-counteracting material at the anode surface, by which layer the work function is maintained high.
  • the reference numeral 1 denotes a glass discharge tube and 2 denotes the cathode which consists of a nickel plate coated with barium-strontium-calcium oxide 3.
  • Two nickel rods 4 constitute the auxiliary anodes, whilst the anode consists of a nickel tube 5 covered with a layer of gold a few microns thick.
  • the gas filling consists of argon at a pressure of 18 mm., whilst the spacing between the cathode and the main anode is 3 mm.
  • silver or thorium may be substituted for gold.
  • a glow-discharge tube containing an inert gas filling in said tube at a pressure of about 18 mms. of mercury, a cold cathode, a layer of alkaline-earth oxides on said cathode for enhancing the emission thereof, an anode spaced from said cathode, and a layer of the element selected from the group consisting of gold, silver and thorium covering said anode for reducing the electron emission therefrom.

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  • Gas-Filled Discharge Tubes (AREA)
US543563A 1954-11-16 1955-10-28 Glow-discharge tube Expired - Lifetime US2864024A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2864024X 1954-11-16

Publications (1)

Publication Number Publication Date
US2864024A true US2864024A (en) 1958-12-09

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ID=19876077

Family Applications (1)

Application Number Title Priority Date Filing Date
US543563A Expired - Lifetime US2864024A (en) 1954-11-16 1955-10-28 Glow-discharge tube

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US (1) US2864024A (enrdf_load_stackoverflow)
BE (1) BE542776A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899751A (en) * 1973-12-03 1975-08-12 Urs E Hochuli Long life molecular gas laser
US4843282A (en) * 1988-02-16 1989-06-27 Gte Products Corporation Glow discharge starter containing silver
US4882835A (en) * 1988-02-16 1989-11-28 Gte Products Corporation Method of making glow discharge starter
US5266867A (en) * 1990-10-15 1993-11-30 Matsushita Electronics Corporation Gas discharge tube with tunnel effect type cathode

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348045A (en) * 1942-01-01 1944-05-02 Bell Telephone Labor Inc Electron discharge device and method of manufacture
US2479164A (en) * 1947-02-05 1949-08-16 Gen Electric Electric glow discharge lamp
US2524227A (en) * 1945-01-10 1950-10-03 Comptoir Des Cendres Et Metaux Thermionic emitting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348045A (en) * 1942-01-01 1944-05-02 Bell Telephone Labor Inc Electron discharge device and method of manufacture
US2524227A (en) * 1945-01-10 1950-10-03 Comptoir Des Cendres Et Metaux Thermionic emitting device
US2479164A (en) * 1947-02-05 1949-08-16 Gen Electric Electric glow discharge lamp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899751A (en) * 1973-12-03 1975-08-12 Urs E Hochuli Long life molecular gas laser
US4843282A (en) * 1988-02-16 1989-06-27 Gte Products Corporation Glow discharge starter containing silver
US4882835A (en) * 1988-02-16 1989-11-28 Gte Products Corporation Method of making glow discharge starter
US5266867A (en) * 1990-10-15 1993-11-30 Matsushita Electronics Corporation Gas discharge tube with tunnel effect type cathode
US5352477A (en) * 1990-10-15 1994-10-04 Matsushita Electronics Corporation Method for manufacturing a cathode for a gas discharge tube

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Publication number Publication date
BE542776A (enrdf_load_stackoverflow)

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