GB709827A - Improvements in or relating to deflection systems for cathode ray tubes - Google Patents

Improvements in or relating to deflection systems for cathode ray tubes

Info

Publication number
GB709827A
GB709827A GB2136651A GB2136651A GB709827A GB 709827 A GB709827 A GB 709827A GB 2136651 A GB2136651 A GB 2136651A GB 2136651 A GB2136651 A GB 2136651A GB 709827 A GB709827 A GB 709827A
Authority
GB
United Kingdom
Prior art keywords
coils
line
frame
deflection
ray tubes
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
GB2136651A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2136651A priority Critical patent/GB709827A/en
Publication of GB709827A publication Critical patent/GB709827A/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
    • H01J29/764—Deflecting by magnetic fields only using toroidal windings

Abstract

709,827. Cathode-ray tubes. STANDARD TELEPHONES & CABLES, Ltd. (Lorenz Akt.-Ges. C.). Sept. 11, 1951, No. 21366/51. Class 39(1) An electromagnetic deflection system for a cathode-ray tube comprises a set of four line deflection coils 4, 5, 6, 7, and four frame deflection coils 8, 9, 10, 11 wound as segments of toroids about a common ferromagnetic yoke, and connected as pairs of series connected coils in parallel as shown in figure 2. To correct for capacity unbalance between the pairs. of coils 4, 7 and 5, 6 of the line deflection system a trimmer condenser 17 is inserted as shown in Fig. 3. To suppress the circulating current i set up due to the coils 5, 6 being inductively unbalanced, there is inserted a condenser 18 of negligible impedance to line frequency currents, but of high impedence to frame frequency currents. The current i arises as a result of the magnetic flux of the frame coils threading the line coils.
GB2136651A 1951-09-11 1951-09-11 Improvements in or relating to deflection systems for cathode ray tubes Expired GB709827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2136651A GB709827A (en) 1951-09-11 1951-09-11 Improvements in or relating to deflection systems for cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2136651A GB709827A (en) 1951-09-11 1951-09-11 Improvements in or relating to deflection systems for cathode ray tubes

Publications (1)

Publication Number Publication Date
GB709827A true GB709827A (en) 1954-06-02

Family

ID=10161700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2136651A Expired GB709827A (en) 1951-09-11 1951-09-11 Improvements in or relating to deflection systems for cathode ray tubes

Country Status (1)

Country Link
GB (1) GB709827A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882446A (en) * 1954-09-01 1959-04-14 Philips Corp Electromagnetic deflection system
US3792305A (en) * 1971-12-23 1974-02-12 Gen Electric Deflection yoke with bridge-connected windings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882446A (en) * 1954-09-01 1959-04-14 Philips Corp Electromagnetic deflection system
US3792305A (en) * 1971-12-23 1974-02-12 Gen Electric Deflection yoke with bridge-connected windings

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