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GB497620A - Device for magnetic deflection of a cathode ray - Google Patents

Device for magnetic deflection of a cathode ray

Info

Publication number
GB497620A
GB497620A GB27382/37A GB2738237A GB497620A GB 497620 A GB497620 A GB 497620A GB 27382/37 A GB27382/37 A GB 27382/37A GB 2738237 A GB2738237 A GB 2738237A GB 497620 A GB497620 A GB 497620A
Authority
GB
United Kingdom
Prior art keywords
tube
coils
cathode
valve
ray
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
GB27382/37A
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB497620A publication Critical patent/GB497620A/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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H03K4/39—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as an amplifier
    • H03K4/43—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as an amplifier combined with means for generating the driving pulses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/96—Circuit elements other than coils, reactors or the like, associated with the tube
    • H01J2229/964—Circuit elements other than coils, reactors or the like, associated with the tube associated with the deflection system

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Details Of Television Scanning (AREA)

Abstract

497,620. Valve generating circuits; cathode - ray tubes. RADIOAKT.-GES. D. S. LOEWE. Oct. 8, 1937, No. 27382. Convention date, Oct. 8, 1936. [Classes 39 (i) and 40 (v)] To produce waves of saw-tooth current in the deflecting coils of a cathode-ray tube, the output of a relaxation oscillator 9 is fed to a valve 1. through a network 11 which accentuates the higher harmonics of the relaxation oscillations relatively to the lower ones. The anode circuit of valve 1 comprises resistance 4 having a value which is large compared with that of coils 2a, 2b, and small compared with the internal resistance of the tube 1. To allow the coils 2a, 2b to act symmetrically on the tube 12, the coils are made equal and are connected in series. An iron yoke 13 surrounds the tube and the polepieces 14 enter the tube and extend as near as possible towards the cathode ray.
GB27382/37A 1936-10-08 1937-10-08 Device for magnetic deflection of a cathode ray Expired GB497620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE497620X 1936-10-08

Publications (1)

Publication Number Publication Date
GB497620A true GB497620A (en) 1938-12-22

Family

ID=6545201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27382/37A Expired GB497620A (en) 1936-10-08 1937-10-08 Device for magnetic deflection of a cathode ray

Country Status (3)

Country Link
US (1) US2227021A (en)
FR (1) FR827593A (en)
GB (1) GB497620A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545018A (en) * 1941-10-28 1951-03-13 Emi Ltd Apparatus for generating electrical pulses
US2531830A (en) * 1944-08-16 1950-11-28 Albert R Simpson Voltage pulse generator
US2521762A (en) * 1945-12-19 1950-09-12 Standard Telephones Cables Ltd Saw-tooth oscillator
US2972115A (en) * 1957-10-29 1961-02-14 Nat Company Inc Molecular beam apparatus

Also Published As

Publication number Publication date
US2227021A (en) 1940-12-31
FR827593A (en) 1938-04-28

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