GB711325A - Improvements in and relating to magnetic deflection systems for cathode ray tubes - Google Patents

Improvements in and relating to magnetic deflection systems for cathode ray tubes

Info

Publication number
GB711325A
GB711325A GB21125/52A GB2112552A GB711325A GB 711325 A GB711325 A GB 711325A GB 21125/52 A GB21125/52 A GB 21125/52A GB 2112552 A GB2112552 A GB 2112552A GB 711325 A GB711325 A GB 711325A
Authority
GB
United Kingdom
Prior art keywords
ringing
winding
damping circuit
resonant
frequency
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
GB21125/52A
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford Corp
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 Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB711325A publication Critical patent/GB711325A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03K4/28—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 a switching device

Landscapes

  • Details Of Television Scanning (AREA)

Abstract

711,325. Saw-tooth generating circuits. PHILCO CORPORATION. Aug. 22, 1952 [Jan. 18, 1952], No. 21125/52. Class 40 (6) A deflection current generator comprises a transformer having a plurality of windings connected in series, one winding having deflection coils and a damping circuit coupled thereto and the other winding being wholly or partly shunted by a damping circuit having a low impedance at a frequency at which ringing occurs and a high impedance at the deflection current repetition frequency. The saw-tooth generator shown comprises an auto transformer connected to deflection coils 32 and a damping diode 36. Ringing in winding 24 may cause the anode voltage of the driver valve to become negative and thus Barkhausen-Kurz oscillations to be generated, but such ringing is prevented by a damping circuit 50, 52 resonant at the ringing frequency and itself damped by a series or shunt resistor 54. This resonant damping circuit may be connected across only a part of the winding and may be supplemented by further circuits resonant at other ringing frequencies.
GB21125/52A 1952-01-18 1952-08-22 Improvements in and relating to magnetic deflection systems for cathode ray tubes Expired GB711325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US267148A US2613334A (en) 1952-01-18 1952-01-18 Electrical system

Publications (1)

Publication Number Publication Date
GB711325A true GB711325A (en) 1954-06-30

Family

ID=23017520

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21125/52A Expired GB711325A (en) 1952-01-18 1952-08-22 Improvements in and relating to magnetic deflection systems for cathode ray tubes

Country Status (2)

Country Link
US (1) US2613334A (en)
GB (1) GB711325A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1151835B (en) * 1959-12-24 1963-07-25 Gerhard W Line deflection circuit for televisions

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992359A (en) * 1954-12-24 1961-07-11 Sylvania Electric Prod Cathode ray beam deflection circuit
US2905856A (en) * 1955-04-04 1959-09-22 Motorola Inc Television receiver
US2809327A (en) * 1955-11-17 1957-10-08 Philco Corp Horizontal magnetic deflection system for television receivers
US2903621A (en) * 1957-01-02 1959-09-08 Philco Corp Horizontal deflection system for cathode ray tubes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL125257C (en) * 1946-05-10
US2458532A (en) * 1946-08-07 1949-01-11 Columbia Broadcasting Syst Inc Cathode-ray tube circuit
US2536839A (en) * 1949-05-24 1951-01-02 Rca Corp Power recovery cathode-ray beam deflection system
US2536838A (en) * 1949-05-24 1951-01-02 Rca Corp High-efficiency cathode-ray beam deflection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1151835B (en) * 1959-12-24 1963-07-25 Gerhard W Line deflection circuit for televisions

Also Published As

Publication number Publication date
US2613334A (en) 1952-10-07

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