GB644992A - Improvements in and relating to electron discharge devices - Google Patents

Improvements in and relating to electron discharge devices

Info

Publication number
GB644992A
GB644992A GB36063/46A GB3606346A GB644992A GB 644992 A GB644992 A GB 644992A GB 36063/46 A GB36063/46 A GB 36063/46A GB 3606346 A GB3606346 A GB 3606346A GB 644992 A GB644992 A GB 644992A
Authority
GB
United Kingdom
Prior art keywords
disc
edge
electrons
wave
electron
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
GB36063/46A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB644992A publication Critical patent/GB644992A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/30—Angle modulation by means of transit-time tube
    • H03C3/32—Angle modulation by means of transit-time tube the tube being a magnetron
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/02—Electron-emitting electrodes; Cathodes
    • 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
    • H01J21/14—Tubes with means for concentrating the electron stream, e.g. beam tetrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/18—Tubes with a single discharge path having magnetic control means; having both magnetic and electrostatic control means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
    • H01J31/04—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with only one or two output electrodes with only two electrically independant groups or electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0029—Electron beam tubes

Landscapes

  • Microwave Tubes (AREA)
  • Particle Accelerators (AREA)

Abstract

644,992. Frequency and phase modulation. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 5, 1946, No. 36063. Convention date, Dec. 5, 1945. [Class 40 (v)] [Also in Group XL (a)] In an electron discharge device (see Group XL (a)) for producing phase and frequency modulation, a planar disc of electrons emanating from a central cathode 39, Fig. 6, has a sinusoidal edge produced by the polyphase energization of a plurality of control electrodes 21<SP>1</SP> arranged in groups on one side of the electron disc opposite a neutral electrode arranged on the other side of the disc. Due to the polyphase energization of the control electrodes, the sinusoidal wave at the edge of the electron disc advances around the disc at the frequency of the polyphase carrier wave. The electrons fall on one or other of two anodes arranged concentric with the cathode in accordance with the progression of the sinusoidal wave at the edge of the disc to produce an output voltage at the polyphase carrier frequency. The inner anode 6, Fig. 5, has openings 51, 52 through which electrons may pass to the outer anode. As shown, the wave 53 represents the edge of the electron disc at the instant when all the electrons pass through the openings 51, 52 and are collected by the outer anode. At the instant represented by the wave 54 all the electrons are collected by the inner anode 6. This voltage is modulated by a modulating magnetic field perpendicular to the plane of the disc to advance or retard the sinusoidal wave at the edge of the disc with respect to its unmodulated position. The anodes may be constructed to provide a three-phase output.
GB36063/46A 1945-12-05 1946-12-05 Improvements in and relating to electron discharge devices Expired GB644992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US632977A US2461250A (en) 1945-12-05 1945-12-05 Electric discharge device and system

Publications (1)

Publication Number Publication Date
GB644992A true GB644992A (en) 1950-10-25

Family

ID=24537779

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36063/46A Expired GB644992A (en) 1945-12-05 1946-12-05 Improvements in and relating to electron discharge devices

Country Status (5)

Country Link
US (1) US2461250A (en)
BE (1) BE472241A (en)
FR (1) FR937800A (en)
GB (1) GB644992A (en)
NL (1) NL75998C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552363A (en) * 1947-10-28 1951-05-08 Bendix Aviat Corp Radial beam modulator tube
US2743390A (en) * 1951-06-04 1956-04-24 Harold E Renfro Frequency control apparatus
US2739259A (en) * 1952-04-08 1956-03-20 Clarence E Neat Electron discharge tube
US2876350A (en) * 1955-05-26 1959-03-03 Burroughs Corp Coding system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2129710A (en) * 1933-09-25 1938-09-13 William H Woodin Jr Amplifying relay system
DE727809C (en) * 1936-03-05 1942-11-12 Telefunken Gmbh Arrangement for generating electrical vibrations
US2322556A (en) * 1942-04-22 1943-06-22 Electronbeam Inc Electronic relay
US2391967A (en) * 1943-01-27 1946-01-01 Bell Telephone Labor Inc Wave generator

Also Published As

Publication number Publication date
BE472241A (en)
NL75998C (en)
FR937800A (en) 1948-08-26
US2461250A (en) 1949-02-08

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