GB475769A - Improvements in or relating to electron discharge tubes - Google Patents

Improvements in or relating to electron discharge tubes

Info

Publication number
GB475769A
GB475769A GB9456/37A GB945637A GB475769A GB 475769 A GB475769 A GB 475769A GB 9456/37 A GB9456/37 A GB 9456/37A GB 945637 A GB945637 A GB 945637A GB 475769 A GB475769 A GB 475769A
Authority
GB
United Kingdom
Prior art keywords
cathode
slats
april
oscillations
emitting
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
GB9456/37A
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.)
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 GB475769A publication Critical patent/GB475769A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
    • H01J25/52—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • H03B9/10—Generation of oscillations using transit-time effects using discharge tubes using a magnetron
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
    • H03C5/02—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube
    • H03C5/04—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube the tube being a magnetron

Landscapes

  • Microwave Tubes (AREA)

Abstract

475,769. Discharge apparatus; thermionic valve circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. April 2, 1937, No. 9456. Convention date, April 2, 1936. [Classes 39 (i) and 40 (v)] A tube comprises a set of secondaryemitting electrodes adjacent the primary cathode constituting a secondary cathode system and a further set of electrodes, both sets being located symmetrically in pairs with respect to the primary cathode. The secondary-emitting set may comprise two semi-cylindrical grids made up of longitudinal wires or radial or oblique slats joined by end bridges or of sheet material longitudinally slit, the remaining portions being twisted to serve as slats. In a modification, Fig. 5, four arcuate sheets PI, P2, P3, P4 are arranged about the cathode K of a magnetron and are secondary-emissive on their outer faces. Secondary-emitting slats W may be added. A four-part anode system Al, A2, A3, A4 surrounds the sheets. Input oscillations may be applied across a two-part inner system, the output being connected across a two-part anode system. In a frequency-multiplier, Fig. 7, the input is applied to a circuit St connected across the inner system P1, P2 and, in the form shown, doublefrequency oscillations are taken from the circuit O. A positively-biassed collecting electrode system N, to which modulation signals may be applied, is provided. The axial magnetic field coil is not shown. Specification 180,655, [Class 39 (i)], is referred to.
GB9456/37A 1936-04-02 1937-04-02 Improvements in or relating to electron discharge tubes Expired GB475769A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE475769X 1936-04-02

Publications (1)

Publication Number Publication Date
GB475769A true GB475769A (en) 1937-11-25

Family

ID=6541900

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9456/37A Expired GB475769A (en) 1936-04-02 1937-04-02 Improvements in or relating to electron discharge tubes

Country Status (1)

Country Link
GB (1) GB475769A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757225C (en) * 1938-08-30 1952-11-17 Lorenz C Ag Secondary electron multiplier with several impact electrodes arranged one behind the other and concentric to the primary electron source designed as a glow cathode
DE1089112B (en) * 1958-02-13 1960-09-15 Thomson Houston Comp Francaise Vacuum pump
DE1281043B (en) * 1957-07-06 1968-10-24 Emi Ltd Arrangement of louvre-like inclined dynode sheets for electron multiplier tubes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757225C (en) * 1938-08-30 1952-11-17 Lorenz C Ag Secondary electron multiplier with several impact electrodes arranged one behind the other and concentric to the primary electron source designed as a glow cathode
DE1281043B (en) * 1957-07-06 1968-10-24 Emi Ltd Arrangement of louvre-like inclined dynode sheets for electron multiplier tubes
DE1089112B (en) * 1958-02-13 1960-09-15 Thomson Houston Comp Francaise Vacuum pump

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