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GB390998A - Improvements in or relating to thermionic valves - Google Patents

Improvements in or relating to thermionic valves

Info

Publication number
GB390998A
GB390998A GB22225/32A GB2222532A GB390998A GB 390998 A GB390998 A GB 390998A GB 22225/32 A GB22225/32 A GB 22225/32A GB 2222532 A GB2222532 A GB 2222532A GB 390998 A GB390998 A GB 390998A
Authority
GB
United Kingdom
Prior art keywords
grid
cathode
uniform
aug
anode
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
GB22225/32A
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 GB390998A publication Critical patent/GB390998A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/06—Tubes with a single discharge path having electrostatic control means only
    • H01J21/10—Tubes with a single discharge path having electrostatic control means only with one or more immovable internal control electrodes, e.g. triode, pentode, octode
    • H01J21/12—Tubes with variable amplification factor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0032—Tubes with variable amplification factor

Landscapes

  • X-Ray Techniques (AREA)

Abstract

390,998. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Aug. 8, 1932, No. 22225. Convention date, Aug. 7, 1931. [Class 39 (i).] A " variable mu " valve is provided with an inner grid Sp coaxial with and surrounding the cathode K and of mesh varying over its length, and with a cylindrical grid G and anode A coaxial with and successively surrounding the grid Sp, the valve being connected in a circuit so that the grid Sp is a space-charge grid and that control potentials are applied to the grid G. The grid Sp is a helix of varying pitch. Specification 279,899, [Class 39 (i), Electric lamps, Arc &c.], is referred to. The Specification as open to inspection under Sect. 91 comprises also non-uniform spacing of the space-charge grid from the cathode and the use, together with the non-uniform spacecharge grid, of other means for obtaining the " variable-mu " effect, e.g. a cathode of different emissivity at different parts, an anode with non-uniform openings and a control or screen grid non-uniform as regards mesh or distance from the cathode. This subject-matter does not appear in the Specification as accepted.
GB22225/32A 1931-08-07 1932-08-08 Improvements in or relating to thermionic valves Expired GB390998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE390998X 1931-08-07

Publications (1)

Publication Number Publication Date
GB390998A true GB390998A (en) 1933-04-20

Family

ID=6377287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22225/32A Expired GB390998A (en) 1931-08-07 1932-08-08 Improvements in or relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB390998A (en)

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