GB394161A - Improvements in or relating to cathode arrangements for use in thermionic valves - Google Patents

Improvements in or relating to cathode arrangements for use in thermionic valves

Info

Publication number
GB394161A
GB394161A GB22867/32A GB2286732A GB394161A GB 394161 A GB394161 A GB 394161A GB 22867/32 A GB22867/32 A GB 22867/32A GB 2286732 A GB2286732 A GB 2286732A GB 394161 A GB394161 A GB 394161A
Authority
GB
United Kingdom
Prior art keywords
cathode
relating
aug
thermionic
thermionic valves
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
GB22867/32A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB394161A publication Critical patent/GB394161A/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
    • H01J1/15—Cathodes heated directly by an electric current

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

394,161. Thermionic cathodes. TELEFUNKEN GES. FœR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Aug. 15, 1932, No. 22867. Convention date, Aug. 13, 1931. [Class 39 (i).] The cathode of a thermionic valve consists of an N- or W-shaped filament heated by alternating-current and having separate portions so connected that maximum potential difference occurs at those points on the portions where they are nearest to each other and the voltage drop along the cathode from end to end is discontinuous. A W-shaped filament may be arranged as shown in the Figure with its outer ends 0 connected together and forming the middle of the electrode system.
GB22867/32A 1931-08-13 1932-08-15 Improvements in or relating to cathode arrangements for use in thermionic valves Expired GB394161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE394161X 1931-08-13

Publications (1)

Publication Number Publication Date
GB394161A true GB394161A (en) 1933-06-22

Family

ID=6395608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22867/32A Expired GB394161A (en) 1931-08-13 1932-08-15 Improvements in or relating to cathode arrangements for use in thermionic valves

Country Status (3)

Country Link
US (1) US1987424A (en)
FR (1) FR740406A (en)
GB (1) GB394161A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7461444B2 (en) * 2004-03-29 2008-12-09 Deaett Michael A Method for constructing antennas from textile fabrics and components

Also Published As

Publication number Publication date
US1987424A (en) 1935-01-08
FR740406A (en) 1933-01-26

Similar Documents

Publication Publication Date Title
GB394161A (en) Improvements in or relating to cathode arrangements for use in thermionic valves
GB586138A (en) Improvements in or relating to electron discharge valve amplifiers
GB489625A (en) Improvements in periodic voltage generator
US2268830A (en) Discharge tube arrangement
GB426855A (en) Modulation system for high frequency wireless transmission
GB419784A (en) Thermionic amplifiers
GB454760A (en) Improvements in and relating to electric amplifying tubes
GB424035A (en) Thermionic valves and arrangements in which such valves are used
GB413544A (en) Improvements in or relating to thermionic valve circuit arrangements
GB401182A (en) Improvements in or relating to thermionic valve arrangements
GB392391A (en) Improvements in or relating to thermionic valves
GB448072A (en) Improvements in or relating to magnetron tube circuit arrangements
GB391021A (en) Improvements in or relating to thermionic valves
GB498339A (en) Improvements in thermionic valves and in circuit arrangements employing same
GB520784A (en) Improvements in electric indicator circuits employing indicators of the cathode ray type
GB452372A (en) Improvements in and relating to electric discharge devices
GB470421A (en) Improvements in or relating to carrier wave modulation systems
GB432470A (en) Improvements in and relating to cathode disintegration
GB480378A (en) Improvements in or relating to thermionic-valve amplifiers and the like
GB441171A (en) Improvements in signalling systems
GB418990A (en) Improvements in or relating to electron discharge devices or valves
GB368190A (en) Improvements in vacuum electric discharge tubes
GB255628A (en) Improvements in thermionic valves
GB406744A (en) Improvements relating to circuits including thermionic valves for the amplification of electric signals
GB411704A (en) Improvements in or relating to electric discharge devices