GB328680A - Improvements in and relating to the production and/or modulation of periodic electric currents - Google Patents

Improvements in and relating to the production and/or modulation of periodic electric currents

Info

Publication number
GB328680A
GB328680A GB362029A GB362029A GB328680A GB 328680 A GB328680 A GB 328680A GB 362029 A GB362029 A GB 362029A GB 362029 A GB362029 A GB 362029A GB 328680 A GB328680 A GB 328680A
Authority
GB
United Kingdom
Prior art keywords
record
stream
target
cathode
modulation
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
GB362029A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB328680A publication Critical patent/GB328680A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03B13/00—Generation of oscillations using deflection of electron beam in a cathode-ray tube
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
    • H01J31/04—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with only one or two output electrodes with only two electrically independant groups or electrodes

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

328,680. Harries, J. H. O. Feb. 4, 1929. Vacuum tubes. - In a tube for effecting frequency-multiplication or modulation, a, jet of cathode rays travels over a " record," or target, having non-uniform characteristics, the relative position and/or velocity of the pick-up and record being suitably varied. In the arrangement shown in Fig. 1, the cathode stream 4 is caused to trace a closed curve on the target or record 5 and the output current is taken off between a pair of the electrodes 2, 3, 5. The target 5 is formed as a record of periodically varying properties thus : it may be of highly resistive material, Fig. 7 (e), having a corrugated surface with a conductive layer, or having a conductive edging 24, Fig. 7 (f). Variations in current strength are effected as the cathode stream passes over the surface, and modulation or fresuency multiplication is effected either (i) by variation of the angular speed of the stream or (ii) by variation of its radial position. Means may also be provided (Fig. 4 not shown) for rotating the target 5. In a modification, Fig. 2, the record 5 may intercept the cathode stream falling upon an electrode 7, and in this case the record may be of mesh or of thin material having varied thickness; or it may be a disc with radial slots or with a circular slots of varying width, Figs. 7 (a) - - 7 (d). The cathode stream may impinge on a fluorescent screen (Fig. 3, not shown) the secondary radiation passing through a record, which may be a photographic film, to a device sensitive to it. Instead of travelling in a circle the stream may oscillate linearly, the record being suitably modified to give the desired frequency. The vacuum tube may be of a demountable type, and the cathode stream may pass through a thin metal partition.
GB362029A 1930-07-22 1929-02-04 Improvements in and relating to the production and/or modulation of periodic electric currents Expired GB328680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2205530A GB366053A (en) 1930-07-22 1930-07-22 Improvements in and relating to the production and/or modulation of electric currents

Publications (1)

Publication Number Publication Date
GB328680A true GB328680A (en) 1930-05-05

Family

ID=10173165

Family Applications (2)

Application Number Title Priority Date Filing Date
GB362029A Expired GB328680A (en) 1930-07-22 1929-02-04 Improvements in and relating to the production and/or modulation of periodic electric currents
GB2205530A Expired GB366053A (en) 1930-07-22 1930-07-22 Improvements in and relating to the production and/or modulation of electric currents

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2205530A Expired GB366053A (en) 1930-07-22 1930-07-22 Improvements in and relating to the production and/or modulation of electric currents

Country Status (2)

Country Link
FR (1) FR720249A (en)
GB (2) GB328680A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747101C (en) * 1935-11-13 1944-09-08 Interessengemeinschaft Fuer Ru Method for frequency multiplication
US2421248A (en) * 1941-05-10 1947-05-27 Allen B Dumont Lab Inc Method of and apparatus for determining absolute altitude
US2422937A (en) * 1943-12-03 1947-06-24 Rauland Corp Tube for color television
US2528020A (en) * 1945-07-24 1950-10-31 Philco Corp Mask controlled feedback system for cathode-ray tubes
DE756425C (en) * 1936-09-14 1952-04-17 Rca Corp Modulation arrangement
DE767357C (en) * 1936-11-18 1952-06-13 Lorenz A G C Arrangement for distance measurement according to the pulse reflection principle
DE767625C (en) * 1935-11-27 1953-03-23 Lorenz C Ag Arrangement for distance measurement by means of reflected pulses
DE757911C (en) * 1940-01-23 1953-11-02 Siemens & Halske A G Arrangement for the generation of ultra-short waves
DE767991C (en) * 1933-11-16 1955-05-05 Siemens App Device for generating short-term electrical impulses
US2743390A (en) * 1951-06-04 1956-04-24 Harold E Renfro Frequency control apparatus
DE969769C (en) * 1952-12-17 1958-07-17 Siemens Ag Electron beam switch tubes, preferably for coding purposes
US2974295A (en) * 1956-05-02 1961-03-07 Rydbeck Olof Erik Hans Frequency addition and subtraction by means of auxiliary deflection electrodes in a cathode ray tube
US2974274A (en) * 1955-12-13 1961-03-07 Lindberg Secondary-emission cathode-ray tube and engine analyzer employing the same
DE1120612B (en) * 1959-07-17 1961-12-28 Philips Nv Electron beam tube for the optical reproduction of characters
DE1154881B (en) * 1959-07-24 1963-09-26 Bbc Brown Boveri & Cie Device for deep irradiation with fast electrons

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE760306C (en) * 1935-07-06 1954-08-23 Siemens Schuckertwerke A G Automatic electrical control device, in particular fine control by means of a movable cathode beam
DE750161C (en) * 1936-04-29 1944-12-18 Marconi Wireless Telegraph Co Cathode ray tube
US2477547A (en) * 1945-01-03 1949-07-26 Bendix Aviat Corp Modulation of radio-frequency oscillations

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767991C (en) * 1933-11-16 1955-05-05 Siemens App Device for generating short-term electrical impulses
DE748703C (en) * 1935-11-13 1944-11-08 Shortwave tube arrangement
DE747101C (en) * 1935-11-13 1944-09-08 Interessengemeinschaft Fuer Ru Method for frequency multiplication
DE767625C (en) * 1935-11-27 1953-03-23 Lorenz C Ag Arrangement for distance measurement by means of reflected pulses
DE756425C (en) * 1936-09-14 1952-04-17 Rca Corp Modulation arrangement
DE767357C (en) * 1936-11-18 1952-06-13 Lorenz A G C Arrangement for distance measurement according to the pulse reflection principle
DE757911C (en) * 1940-01-23 1953-11-02 Siemens & Halske A G Arrangement for the generation of ultra-short waves
US2421248A (en) * 1941-05-10 1947-05-27 Allen B Dumont Lab Inc Method of and apparatus for determining absolute altitude
US2422937A (en) * 1943-12-03 1947-06-24 Rauland Corp Tube for color television
US2528020A (en) * 1945-07-24 1950-10-31 Philco Corp Mask controlled feedback system for cathode-ray tubes
US2743390A (en) * 1951-06-04 1956-04-24 Harold E Renfro Frequency control apparatus
DE969769C (en) * 1952-12-17 1958-07-17 Siemens Ag Electron beam switch tubes, preferably for coding purposes
US2974274A (en) * 1955-12-13 1961-03-07 Lindberg Secondary-emission cathode-ray tube and engine analyzer employing the same
US2974295A (en) * 1956-05-02 1961-03-07 Rydbeck Olof Erik Hans Frequency addition and subtraction by means of auxiliary deflection electrodes in a cathode ray tube
DE1120612B (en) * 1959-07-17 1961-12-28 Philips Nv Electron beam tube for the optical reproduction of characters
DE1154881B (en) * 1959-07-24 1963-09-26 Bbc Brown Boveri & Cie Device for deep irradiation with fast electrons

Also Published As

Publication number Publication date
FR720249A (en) 1932-02-17
GB366053A (en) 1932-01-22

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