GB499681A - Electron discharge devices - Google Patents

Electron discharge devices

Info

Publication number
GB499681A
GB499681A GB30380/37A GB3038037A GB499681A GB 499681 A GB499681 A GB 499681A GB 30380/37 A GB30380/37 A GB 30380/37A GB 3038037 A GB3038037 A GB 3038037A GB 499681 A GB499681 A GB 499681A
Authority
GB
United Kingdom
Prior art keywords
cylinder
cathode
flange
anode
envelope
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
GB30380/37A
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.)
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 GB499681A publication Critical patent/GB499681A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/74—Tubes specially designed to act as transit-time diode oscillators, e.g. monotrons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/36—Tubes with flat electrodes, e.g. disc electrode

Abstract

499,681. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. Nov. 5, 1937, No. 30380. Convention date, Nov. 13, 1936. [Class 39 (i)] The cathode of a device for dealing with highfrequency oscillations, is formed with a flat perforated surface covered with emissive material on the side remote from the anode. The Specification describes two constructions of diode generator. Fig. 1 shows an arrangement comprising an envelope formed in two parts, one of which is a metal cylinder 14 in one piece with a coaxial inner cylinder 13 forming the anode. The cathode 18 is a perforated disc coated with emissive material on its upper face and forming the end of a cylinder 17 coaxial with the cylinder 13. The cylinder 17 is formed with a flange 19 which is held against a ring 21 resting on a shoulder on the anode structure by means of a screwed ring 29, a washer 30, and insulating washers 20, 28. Within the cylinder 17 is a heater 22 the leads of which pass through a glass portion 10 of the envelope sealed to the portion 15. One of the leads is connected to the cathode by means of a wire 26 clamped between the flange 19 and the insulating, washer 28. The cylinder 17 is grooved to obstruct conduction of heat. Fig. 5 shows the flange 19 of the cathode cylinder 17 welded to a portion 34 of the envelope formed with a flange 35 and an inner cylindrical wall 36. The anode 13 is formed on the end of a cylinder 41 having a shoulder 40 accommodating an insulator 39 by which it is separated from the wall 36. The cylinder 41 is made in one piece with a second portion 42 of the envelope, the portions 34, 42 being sealed to a glass ring 43.
GB30380/37A 1936-11-13 1937-11-05 Electron discharge devices Expired GB499681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US110603A US2125279A (en) 1936-11-13 1936-11-13 Electron discharge device

Publications (1)

Publication Number Publication Date
GB499681A true GB499681A (en) 1939-01-27

Family

ID=22333924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30380/37A Expired GB499681A (en) 1936-11-13 1937-11-05 Electron discharge devices

Country Status (3)

Country Link
US (1) US2125279A (en)
FR (1) FR828276A (en)
GB (1) GB499681A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424526A (en) * 1943-01-11 1947-07-22 Gen Electric Electric discharge device
US2441315A (en) * 1946-01-28 1948-05-11 Rca Corp Electron gun mounting
NL135247C (en) * 1946-10-22
US2810089A (en) * 1953-06-15 1957-10-15 Bell Telephone Labor Inc Cathodes for electron discharge devices
US2810090A (en) * 1953-06-15 1957-10-15 Bell Telephone Labor Inc Cathodes for electron discharge devices
NL94116C (en) * 1953-06-15
US2928013A (en) * 1954-12-23 1960-03-08 Siemens Ag Electrical discharge device

Also Published As

Publication number Publication date
FR828276A (en) 1938-05-13
US2125279A (en) 1938-08-02

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