GB487627A - Improvements in thermionic multi-grid valves - Google Patents

Improvements in thermionic multi-grid valves

Info

Publication number
GB487627A
GB487627A GB12706/37A GB1270637A GB487627A GB 487627 A GB487627 A GB 487627A GB 12706/37 A GB12706/37 A GB 12706/37A GB 1270637 A GB1270637 A GB 1270637A GB 487627 A GB487627 A GB 487627A
Authority
GB
United Kingdom
Prior art keywords
grid
grids
valve
thermionic
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
GB12706/37A
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.)
MO Valve Co Ltd
Original Assignee
MO Valve Co Ltd
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 MO Valve Co Ltd filed Critical MO Valve Co Ltd
Priority to GB12706/37A priority Critical patent/GB487627A/en
Publication of GB487627A publication Critical patent/GB487627A/en
Priority to US224071A priority patent/US2191903A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Particle Accelerators (AREA)
  • Microwave Tubes (AREA)

Abstract

487,627. Thermionic valves ; electron multipliers. M-O VALVE CO., Ltd., and ALDOUS, W. H. May 4, 1937, No. 12706. [Class 39 (i)] In a frequency-changing valve having two control grids 3, 6 a screen grid 4 is placed between them and coated with secondary emitting material ; an accelerating grid 5 is used between the grids 4, 6 and a further screen grid 7 before the anode 8. A triode consisting of the cathode 2-which is common to the two valve sections-grid 9 and anode 10 supplies the grid 6. More than one secondary emitting grid may be used ; these grids are formed by heating an oxidized metal in caesium vapour. The primary electrons from the cathode 2 produce secondaries at the grid or grids 4 whose kinetic energy is so low that they cannot reach back to the first control grid again. Specification 487,628 is referred to.
GB12706/37A 1937-05-04 1937-05-04 Improvements in thermionic multi-grid valves Expired GB487627A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB12706/37A GB487627A (en) 1937-05-04 1937-05-04 Improvements in thermionic multi-grid valves
US224071A US2191903A (en) 1937-05-04 1938-08-10 Electron discharge device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12706/37A GB487627A (en) 1937-05-04 1937-05-04 Improvements in thermionic multi-grid valves

Publications (1)

Publication Number Publication Date
GB487627A true GB487627A (en) 1938-06-23

Family

ID=10009612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12706/37A Expired GB487627A (en) 1937-05-04 1937-05-04 Improvements in thermionic multi-grid valves

Country Status (2)

Country Link
US (1) US2191903A (en)
GB (1) GB487627A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553672A (en) * 1948-09-24 1951-05-22 Rca Corp Amplification and demodulation system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2536794A (en) * 1943-03-16 1951-01-02 Gen Electric Frequency multiplier
GB568684A (en) * 1943-10-11 1945-04-16 Cossor Ltd A C Improvements relating to frequency-changers for superheterodyne radio receivers and the like
US2532503A (en) * 1944-04-24 1950-12-05 Joseph W Kennedy Electronic counting circuits
US2456754A (en) * 1945-03-20 1948-12-21 Rca Corp Electronic saw-tooth pulse generator
FR918913A (en) * 1945-10-16 1947-02-21 Thomson Houston Comp Francaise Improvements to harmonic generators
BE521975A (en) * 1952-08-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553672A (en) * 1948-09-24 1951-05-22 Rca Corp Amplification and demodulation system

Also Published As

Publication number Publication date
US2191903A (en) 1940-02-27

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