GB494586A - Improvements in or relating to deflecting means for use with electron discharge devices - Google Patents

Improvements in or relating to deflecting means for use with electron discharge devices

Info

Publication number
GB494586A
GB494586A GB1201537A GB1201537A GB494586A GB 494586 A GB494586 A GB 494586A GB 1201537 A GB1201537 A GB 1201537A GB 1201537 A GB1201537 A GB 1201537A GB 494586 A GB494586 A GB 494586A
Authority
GB
United Kingdom
Prior art keywords
yoke
polepieces
tube
extensions
deflecting means
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
GB1201537A
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.)
GEORGE RICHARD TINGLEY
Baird Television Ltd
Original Assignee
GEORGE RICHARD TINGLEY
Baird Television 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 GEORGE RICHARD TINGLEY, Baird Television Ltd filed Critical GEORGE RICHARD TINGLEY
Priority to GB1201537A priority Critical patent/GB494586A/en
Priority to DEF84872D priority patent/DE751093C/en
Publication of GB494586A publication Critical patent/GB494586A/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

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

494,586. Discharge apparatus. BAIRD TELEVISION, Ltd., and TINGLEY, G. R. April 27, 1937, No. 12015. [Class 39 (i)] Magnetic deflecting means for an electrondischarge device such as a cathode-ray tube comprise a U - shaped ferromagnetic yoke 1, Fig. 2, the limbs of which embrace the tube 4 and are provided with substantially semi-cylindrical polepieces 3 the length of which in the direction of the electron beam is substantially greater than that of the yoke, and the dimensions of the polepieces are such that they form an almost closed cylinder round the tube ; coils 2 and 5 are provided on the yoke and within the polepieces for producing components of the deflecting field at right-angles to one another. Extensions to form a gapped or closed iron circuit may be provided on the core to increase the inductance of the coil 2. In a modification, Fig. 1, the polepieces 3 are displaced from the yoke 1 towards the source of electrons and are connected to the yoke by ferromagnetic strips 7. The yoke also may be provided with small extrusions 8 embracing the tube 4 and with extensions 9 having adjustable polepieces as described in Specification 462,684. This modification is stated to give a better correction of the " pincushion " distortion and prevents barrel distortion while reducing the interaction between the scanning fields.
GB1201537A 1937-04-27 1937-04-27 Improvements in or relating to deflecting means for use with electron discharge devices Expired GB494586A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1201537A GB494586A (en) 1937-04-27 1937-04-27 Improvements in or relating to deflecting means for use with electron discharge devices
DEF84872D DE751093C (en) 1937-04-27 1938-04-28 Electromagnetic deflection device for cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1201537A GB494586A (en) 1937-04-27 1937-04-27 Improvements in or relating to deflecting means for use with electron discharge devices

Publications (1)

Publication Number Publication Date
GB494586A true GB494586A (en) 1938-10-27

Family

ID=9996864

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1201537A Expired GB494586A (en) 1937-04-27 1937-04-27 Improvements in or relating to deflecting means for use with electron discharge devices

Country Status (2)

Country Link
DE (1) DE751093C (en)
GB (1) GB494586A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742390C (en) * 1939-07-04 1943-12-01 Fernseh Gmbh Ferromagnetic deflection system for cathode ray tubes
DE743844C (en) * 1939-02-08 1944-01-04 Fernseh Gmbh Electromagnetic deflection system for electron beam tubes
DE757628C (en) * 1939-06-25 1954-02-01 Telefunken Gmbh Coil arrangement for cathode ray deflection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE912822C (en) * 1950-02-14 1954-06-03 Telefunken Gmbh Arrangement for eliminating a dip in the frequency curve of a low-frequency transmission device for a larger frequency range by a transmitter with chamber windings and / or nested windings or by a choke with chamber windings

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981322A (en) * 1932-11-16 1934-11-20 Nakajima Tomomasa Cathode ray tube
NL39451C (en) * 1933-12-07
DE739047C (en) * 1935-09-30 1943-09-09 Fernseh Gmbh Deflection coil system for electron beam tubes
AT151610B (en) * 1936-02-28 1937-11-25 Rca Corp Deflection coil system for cathode ray tubes.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743844C (en) * 1939-02-08 1944-01-04 Fernseh Gmbh Electromagnetic deflection system for electron beam tubes
DE757628C (en) * 1939-06-25 1954-02-01 Telefunken Gmbh Coil arrangement for cathode ray deflection
DE742390C (en) * 1939-07-04 1943-12-01 Fernseh Gmbh Ferromagnetic deflection system for cathode ray tubes

Also Published As

Publication number Publication date
DE751093C (en) 1958-04-24

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