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GB526382A - Improvements in magnetic focussing systems for cathode ray tubes - Google Patents

Improvements in magnetic focussing systems for cathode ray tubes

Info

Publication number
GB526382A
GB526382A GB822439A GB822439A GB526382A GB 526382 A GB526382 A GB 526382A GB 822439 A GB822439 A GB 822439A GB 822439 A GB822439 A GB 822439A GB 526382 A GB526382 A GB 526382A
Authority
GB
United Kingdom
Prior art keywords
ray tubes
cathode ray
magnetic focussing
focussing systems
arm
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
GB822439A
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co 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 Mullard Radio Valve Co Ltd filed Critical Mullard Radio Valve Co Ltd
Priority to GB822439A priority Critical patent/GB526382A/en
Publication of GB526382A publication Critical patent/GB526382A/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
    • H01J29/54—Arrangements for centring ray or beam

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

526,382. Cathode-ray tubes. MULLARD RADIO VALVE CO., Ltd., and EAGLESFIELD, C. C. March 14, 1939, No. 8224. [Class 39 (i)] The focusing coil 10 or permanent magnet is carried by the arm 12 of a U-shaped frame the other arm 13 having a part 14 adjustable in its own plane. A filling 23 of baize is used to receive the envelope. The permanent magnet may be horse-shoe shaped in cross section or be a ring magnet.
GB822439A 1939-03-14 1939-03-14 Improvements in magnetic focussing systems for cathode ray tubes Expired GB526382A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB822439A GB526382A (en) 1939-03-14 1939-03-14 Improvements in magnetic focussing systems for cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB822439A GB526382A (en) 1939-03-14 1939-03-14 Improvements in magnetic focussing systems for cathode ray tubes

Publications (1)

Publication Number Publication Date
GB526382A true GB526382A (en) 1940-09-17

Family

ID=9848327

Family Applications (1)

Application Number Title Priority Date Filing Date
GB822439A Expired GB526382A (en) 1939-03-14 1939-03-14 Improvements in magnetic focussing systems for cathode ray tubes

Country Status (1)

Country Link
GB (1) GB526382A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497078A (en) * 1945-03-15 1950-02-14 James E Gall Tube mount

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497078A (en) * 1945-03-15 1950-02-14 James E Gall Tube mount

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