GB308823A - Indirectly heated thermionic cathode - Google Patents

Indirectly heated thermionic cathode

Info

Publication number
GB308823A
GB308823A GB9966/29A GB996629A GB308823A GB 308823 A GB308823 A GB 308823A GB 9966/29 A GB9966/29 A GB 9966/29A GB 996629 A GB996629 A GB 996629A GB 308823 A GB308823 A GB 308823A
Authority
GB
United Kingdom
Prior art keywords
cathode
indirectly heated
heated
valve
thermionic cathode
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
GB9966/29A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB308823A publication Critical patent/GB308823A/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)
  • Electron Sources, Ion Sources (AREA)
  • Solid Thermionic Cathode (AREA)
  • Measuring Fluid Pressure (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

308,823. Loewe, S. June 25, 1927, [Convention date]. Divided on 292,913. Vacuum tubes. - A cathode is heated by conduction from two wires 4, 5, which form extensions of the cathode and are heated to incandescence by passage of current through them. One supply lead 6 is .connected through conductors 9, 10 with the ends of the cathode and the other lead with the outer leads 7, 8 of the heating wires 4, 5, so that no potential exists across the ends of the cathode; or the leads 7, 8 may be connected together by a bridge the mid-point of which is connected with a supply lead. The Specification as open to inspection under Sect. 91 (3) (a) comprises also (a) a valve in which a number of cathodes are connected in parallel between two heaters, and (b) a valve in which several electrode systems are arranged in a single envelope. This subject-matter does not appear in the Specification as accepted.
GB9966/29A 1927-06-25 1928-06-18 Indirectly heated thermionic cathode Expired GB308823A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL69010D DE584068C (en) 1927-06-25 1927-06-25 Indirectly heated cathode
DE292913X 1927-06-25

Publications (1)

Publication Number Publication Date
GB308823A true GB308823A (en) 1929-09-12

Family

ID=25780058

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9966/29A Expired GB308823A (en) 1927-06-25 1928-06-18 Indirectly heated thermionic cathode
GB17540/28A Expired GB292913A (en) 1927-06-25 1928-06-18 Indirectly heated thermionic cathode

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB17540/28A Expired GB292913A (en) 1927-06-25 1928-06-18 Indirectly heated thermionic cathode

Country Status (6)

Country Link
US (1) US1939997A (en)
AT (1) AT124871B (en)
DE (1) DE584068C (en)
FR (1) FR656047A (en)
GB (2) GB308823A (en)
NL (1) NL25429C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL110237C (en) * 1951-06-10

Also Published As

Publication number Publication date
FR656047A (en) 1929-04-26
AT124871B (en) 1931-10-10
GB292913A (en) 1929-06-20
DE584068C (en) 1933-09-14
NL25429C (en)
US1939997A (en) 1933-12-19

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