GB893914A - Improvements in electron-beam stepping tubes and circuits therefor - Google Patents

Improvements in electron-beam stepping tubes and circuits therefor

Info

Publication number
GB893914A
GB893914A GB7401/60A GB740160A GB893914A GB 893914 A GB893914 A GB 893914A GB 7401/60 A GB7401/60 A GB 7401/60A GB 740160 A GB740160 A GB 740160A GB 893914 A GB893914 A GB 893914A
Authority
GB
United Kingdom
Prior art keywords
electron
electrode
anode
suppressed
until
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
GB7401/60A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB893914A publication Critical patent/GB893914A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/485—Construction of the gun or of parts thereof
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K29/00—Pulse counters comprising multi-stable elements, e.g. for ternary scale, for decimal scale; Analogous frequency dividers

Landscapes

  • Electron Beam Exposure (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

893,914. Counters. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 2, 1960 [March 5, 1959], No. 7401/60. Class 106 (1). [Also in Group XL (a)] In an electron beam stepping tube having an electron source, deflection electrodes 13, 14, a masking electrode 15, having apertures juxtaposed in the direction of deflection, and an anode 16, it being possible for a beam of electrons to be maintained in different positions by distribution of the current between the masking electrode and the anode, the electron source comprises two control electrodes 18, 19 and provides two electron beams each of which can be deflected, and each of which can be passed or suppressed by its associated control electrode independently of the other. The apertures in the masking electrode are provided in staggered position in two rows so that each row can be scanned by one electron beam. The grids may be made alternately positive and negative by connecting them to a bistable multivibrator. As shown, grid 18 is negative and the lower beam is suppressed while the upper beam impinges, through aperture 6, on anode 16 and is held in this position until a further pulse is supplied to the vibrator, whereupon the upper beam is suppressed and the lower beam impinges wholly upon mask 15. The consequent change in the deflecting field deflects the beam until it enters aperture 7 where it is held until a further pulse is supplied. When the beam reaches position 10 it is immediately restored to position 0 by means of the pulse from electrode 17. Instead of cathode 11 and screen 12, an electron source providing two beams of circular cross-section may be used.
GB7401/60A 1959-03-05 1960-03-02 Improvements in electron-beam stepping tubes and circuits therefor Expired GB893914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL893914X 1959-03-05

Publications (1)

Publication Number Publication Date
GB893914A true GB893914A (en) 1962-04-18

Family

ID=19856017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7401/60A Expired GB893914A (en) 1959-03-05 1960-03-02 Improvements in electron-beam stepping tubes and circuits therefor

Country Status (3)

Country Link
US (1) US3062984A (en)
DE (1) DE1110225B (en)
GB (1) GB893914A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248587A (en) * 1963-04-18 1966-04-26 Hitachi Ltd Electron bombardment ion source
US3460099A (en) * 1965-03-05 1969-08-05 Information Int Inc High-speed film reader/recorder with grid reference
US3502936A (en) * 1966-07-06 1970-03-24 Western Electric Co Electron discharge devices

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732516A (en) * 1956-01-24 speedy
BE488646A (en) * 1948-07-03
NL76624C (en) * 1948-09-30
BE496113A (en) * 1949-06-04
US2710361A (en) * 1952-06-19 1955-06-07 Nat Union Radio Corp Binary coding and decoding tube of the cathode ray type
US2712087A (en) * 1954-10-19 1955-06-28 Plural beam electron discharge devices

Also Published As

Publication number Publication date
DE1110225B (en) 1961-07-06
US3062984A (en) 1962-11-06

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