GB630621A - Improvements in or relating to electric discharge apparatus - Google Patents

Improvements in or relating to electric discharge apparatus

Info

Publication number
GB630621A
GB630621A GB2156/47A GB215647A GB630621A GB 630621 A GB630621 A GB 630621A GB 2156/47 A GB2156/47 A GB 2156/47A GB 215647 A GB215647 A GB 215647A GB 630621 A GB630621 A GB 630621A
Authority
GB
United Kingdom
Prior art keywords
layer
relating
coated
electric discharge
discharge apparatus
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
GB2156/47A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Philips Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB630621A publication Critical patent/GB630621A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment

Landscapes

  • Discharge Lamp (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

630,621. Thermionic valves. PHILIPS LAMPS, Ltd. Jan. 23, 1947, No. 2156. Convention date, Dec. 31, 1943. Drawings to Specification. [Class 39 (i)] A cathode for an electron discharge tube comprises a heater inside a conductive support on which the emissive layer is coated. This in turn is coated with an outer conductive layer, e.g. very thin nickel foil, wire gauze, or a helical wire, which outer layer is connected to a supply conductor. The inner conductive support is also connected to a supply conductor and a low p.d. not exceeding 10 volts is applied across the emissive layer, the outer layer being negative to the support.
GB2156/47A 1943-12-31 1947-01-23 Improvements in or relating to electric discharge apparatus Expired GB630621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL630621X 1943-12-31

Publications (1)

Publication Number Publication Date
GB630621A true GB630621A (en) 1949-10-18

Family

ID=19788726

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2156/47A Expired GB630621A (en) 1943-12-31 1947-01-23 Improvements in or relating to electric discharge apparatus

Country Status (3)

Country Link
US (1) US2486292A (en)
FR (1) FR915556A (en)
GB (1) GB630621A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563573A (en) * 1951-08-07 Hot cathode electron tube which re

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1936419A (en) * 1930-06-03 1933-11-21 Gen Electric Photo-electric tube
US1923335A (en) * 1931-09-23 1933-08-22 Raytheon Inc Thermionic vapor discharge device
US2107945A (en) * 1934-11-20 1938-02-08 Gen Electric Cathode structure
US2091554A (en) * 1935-10-03 1937-08-31 Bell Telephone Labor Inc Composite refractory body
US2128051A (en) * 1935-10-03 1938-08-23 Westinghouse Electric & Mfg Co Electric discharge apparatus

Also Published As

Publication number Publication date
US2486292A (en) 1949-10-25
FR915556A (en) 1946-11-12

Similar Documents

Publication Publication Date Title
GB716412A (en) Improvements in cylindrical cathodes
US2771566A (en) Cathode ray electron discharge device
GB1457798A (en) Cathode-ray tube
GB1272498A (en) X-ray tube having a metal envelope
US2429118A (en) Electrode for fluorescent tubes
GB630621A (en) Improvements in or relating to electric discharge apparatus
GB644409A (en) Improvements in electric discharge lamps
GB626710A (en) Improvements in electric discharge tubes, having a secondary-emission electrode
GB608677A (en) Improvements in gas-filled electron discharge devices
GB1065145A (en) Improvements for cathodes for electrolytic machining
US2328989A (en) Gaseous electric discharge device
GB820065A (en) Improvements relating to cathode structures for electric discharge devices
GB520623A (en) Improvements in electric discharge tubes for the optical indication of voltages
GB415398A (en) Improvements relating to indirectly heated cathodes for electron discharge devices
GB829339A (en) Improvements in or relating to equipotential cathodes for electric discharge tubes and discharge tubes containing such cathodes
GB495732A (en) Improvements in or relating to cathode ray tuning indicators
GB766881A (en) Improvements relating to cathodes for high power valves
US1984468A (en) Gaseous electric discharge device
GB1070377A (en) Improvements in or relating to thermionic cathodes and to electron discharge devices employing thermionic cathodes
GB648046A (en) Improvements in or relating to electric discharge tubes comprising disc-like electrodes
GB767988A (en) Improvements in or relating to circuits comprising gas discharge tubes
GB982406A (en) Improvements in or relating to ionization manometers
GB679755A (en) Improvements in electric discharge lamps
GB621536A (en) Improvements in electron-beam tubes
GB622667A (en) Improvements in or relating to electric discharge tubes