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GB1253268A - Improvements in or relating to grid-controlled transmitter tubes - Google Patents

Improvements in or relating to grid-controlled transmitter tubes

Info

Publication number
GB1253268A
GB1253268A GB730169A GB730169A GB1253268A GB 1253268 A GB1253268 A GB 1253268A GB 730169 A GB730169 A GB 730169A GB 730169 A GB730169 A GB 730169A GB 1253268 A GB1253268 A GB 1253268A
Authority
GB
United Kingdom
Prior art keywords
control grid
cathode
grid
cylinder
members
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
GB730169A
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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
Priority claimed from DE19681639404 external-priority patent/DE1639404A1/en
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of GB1253268A publication Critical patent/GB1253268A/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
    • H01J21/065—Devices for short wave tubes
    • 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
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0029—Electron beam tubes

Landscapes

  • Microwave Tubes (AREA)

Abstract

1,253,268. Thermionic cathode tubes. SIEMENS A.G. 11 Feb., 1969 [12 Feb., 1968], No. 7301/69. Heading H1D. A grid-controlled transmitter tube comprises a hollow anode cylinder 5 surrounding a central hollow cylinder 1 having a number of radiallydirected, axially-extending ribs 2 to form a focusing electrode for a number of strip-like cathode elements 6, one cathode element 6 being positioned in the space 3 between each adjacent pair of ribs so as to form separate flat electron beams 10 focused and directed radially out towards the anode 5 between gaps in a cagelike control grid assembly 7 and a cage-like screen grid assembly 8, both the assemblies 7, 8 being formed of axially extending elongate members. As shown, the control grid members 7 are arcuate in cross-section, and the screen grid members 8 have U-shaped cross-sections with the concave surface directed inwardly and the limbs of the U-shape being longer than the base to form extended drift spaces 9. The cathode elements 6 may consist of directly heated shaped-thoriated tungsten sheets each being individually tensioned longitudinally by a spring, Fig. 2 (not shown). The control grid assembly may be tensioned by a common spring. A duct 4 in the central cylinder 1 may be employed for cooling. Also, for some applications the individual electron beams may be focused by a magnetic field running in the direction of the beams.
GB730169A 1968-02-12 1969-02-11 Improvements in or relating to grid-controlled transmitter tubes Expired GB1253268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681639404 DE1639404A1 (en) 1968-02-12 1968-02-12 Grid-controlled transmission tubes with high power amplification

Publications (1)

Publication Number Publication Date
GB1253268A true GB1253268A (en) 1971-11-10

Family

ID=5684006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB730169A Expired GB1253268A (en) 1968-02-12 1969-02-11 Improvements in or relating to grid-controlled transmitter tubes

Country Status (3)

Country Link
CH (1) CH496317A (en)
FR (1) FR1596897A (en)
GB (1) GB1253268A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000734A1 (en) * 1980-08-27 1982-03-04 Shapiro A Electron-beam tube

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277718A (en) * 1979-11-07 1981-07-07 Varian Associates, Inc. Modular electron tube with carbon grid
FR2499311A1 (en) * 1981-02-03 1982-08-06 Elektrotekhnichesky Inst High power triode valve with rod control grid - uses multiple focussed radial electron beams for high current and efficiency with cooled electrodes
NL8501242A (en) * 1985-05-02 1986-12-01 Philips Nv ELECTRON TUBE.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000734A1 (en) * 1980-08-27 1982-03-04 Shapiro A Electron-beam tube

Also Published As

Publication number Publication date
CH496317A (en) 1970-09-15
FR1596897A (en) 1970-06-22

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