GB659737A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB659737A
GB659737A GB23094/47A GB2309447A GB659737A GB 659737 A GB659737 A GB 659737A GB 23094/47 A GB23094/47 A GB 23094/47A GB 2309447 A GB2309447 A GB 2309447A GB 659737 A GB659737 A GB 659737A
Authority
GB
United Kingdom
Prior art keywords
anode
grid
vitreous
screen
aug
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
GB23094/47A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB659737A publication Critical patent/GB659737A/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

Landscapes

  • Hybrid Cells (AREA)

Abstract

659,737. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. Aug. 20, 1947, No. 23094. Convention date, Aug. 20, 1946. [Class 39 (i)] A pentode comprises a screen grid G2 mounted upon an annular disc SG2 intermediate vitreous portions B1, B2 of the envelope, an anode A sealed to the other end of the vitreous portion B2, a cathode F and control grid G1 mounted on leads SF, SG1 sealed in the vitreous portion B1, , and a suppressor grid G3 mounted on a lead SG3 passing through and supported by the anode. If the output circuit is enclosed within a screen connected to the screen grid, the suppressor grid may be biassed negatively with respect to the anode without interrupting the screening between the input and output circuits. The anode has an end portion of smaller diameter coaxially surrounding the suppressor grid lead SG3 and supporting it by means of a glass collar B3. The anode carries cooling fins.
GB23094/47A 1946-08-20 1947-08-20 Improvements in or relating to electron discharge devices Expired GB659737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR659737X 1946-08-20

Publications (1)

Publication Number Publication Date
GB659737A true GB659737A (en) 1951-10-24

Family

ID=9009846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23094/47A Expired GB659737A (en) 1946-08-20 1947-08-20 Improvements in or relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB659737A (en)

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