GB671296A - Improvements in or relating to electron discharge apparatus - Google Patents

Improvements in or relating to electron discharge apparatus

Info

Publication number
GB671296A
GB671296A GB28583/49A GB2858349A GB671296A GB 671296 A GB671296 A GB 671296A GB 28583/49 A GB28583/49 A GB 28583/49A GB 2858349 A GB2858349 A GB 2858349A GB 671296 A GB671296 A GB 671296A
Authority
GB
United Kingdom
Prior art keywords
class
travelling
wave
triode
helix
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
GB28583/49A
Inventor
Peter Francis Conway Burke
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 GB671296A publication Critical patent/GB671296A/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
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field
    • H01J25/38—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field the forward travelling wave being utilised
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
    • C09B43/136—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
    • C09B43/14—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents with phosgene or thiophosgene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
    • C09B43/136—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
    • C09B43/16—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents linking amino-azo or cyanuric acid residues

Abstract

671,296. Travelling-wave tubes. STANDARD TELEPHONES & CABLES, Ltd. Nov. 3, 1950 [Nov. 8, 1949], No. 28583/49. Class 39 (i). The helix 2 of a travelling-wave tube is so dimensioned as to be sufficiently dispersive to discriminate between various harmonics of a given frequency so that a particular harmonic is selected and amplified whereas the given frequency itself is density-modulated in a region prior to the entrance of the beam into the helix 2. The electron gun comprises a cathode 8 and a control grid 9, input being applied through a coaxial connection 14 from a source 15. The cathode, control grid and accelerating anode 10 are arranged so that were the accelerating anode replaced by a member non-permeable to electrons, the structure would form a triode suitable for use as a Class C amplifier at the frequency of the source 15. Instead of the " Class C triode " electron gun a cavity resonator and an ordinary type gun may be used, Fig. 2 (not shown), or in place of the resonator a further travelling-wave structure, Fig. 3 (not shown), may be employed. For use as an oscillatory structure for density modulating the beam a resonant structure which functions in the manner of a coaxial line type modulator may also be used, Fig. 4 (not shown).
GB28583/49A 1949-11-08 1949-11-08 Improvements in or relating to electron discharge apparatus Expired GB671296A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB303049X 1949-11-08
GB2774869X 1949-11-08

Publications (1)

Publication Number Publication Date
GB671296A true GB671296A (en) 1952-04-30

Family

ID=26260377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28583/49A Expired GB671296A (en) 1949-11-08 1949-11-08 Improvements in or relating to electron discharge apparatus

Country Status (3)

Country Link
US (1) US2774869A (en)
CH (2) CH302049A (en)
GB (1) GB671296A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753481A (en) * 1952-06-14 1956-07-03 Sperry Rand Corp Travelling wave oscillators

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981889A (en) * 1956-10-18 1961-04-25 Gen Electric Electron tube frequency multiplier of the traveling wave type

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL49857C (en) * 1935-11-30
NL62817C (en) * 1940-05-04
US2516944A (en) * 1947-12-18 1950-08-01 Philco Corp Impedance-matching device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753481A (en) * 1952-06-14 1956-07-03 Sperry Rand Corp Travelling wave oscillators

Also Published As

Publication number Publication date
CH298139A (en) 1954-04-30
CH302049A (en) 1954-09-30
US2774869A (en) 1956-12-18

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