GB1220687A - Improvements in or relating to electro-magnetic deflection coil arrangements for cathode ray tubes - Google Patents

Improvements in or relating to electro-magnetic deflection coil arrangements for cathode ray tubes

Info

Publication number
GB1220687A
GB1220687A GB25887/67A GB2588767A GB1220687A GB 1220687 A GB1220687 A GB 1220687A GB 25887/67 A GB25887/67 A GB 25887/67A GB 2588767 A GB2588767 A GB 2588767A GB 1220687 A GB1220687 A GB 1220687A
Authority
GB
United Kingdom
Prior art keywords
common
deflection
amplifier
circuit
mode feedback
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
GB25887/67A
Inventor
David Horace Chandler
Leslie Howard Dawson
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB25887/67A priority Critical patent/GB1220687A/en
Priority to US723683A priority patent/US3488552A/en
Priority to SE05521/68A priority patent/SE337631B/xx
Priority to NL6807500A priority patent/NL6807500A/xx
Priority to BE716134D priority patent/BE716134A/xx
Priority to DE19681764581 priority patent/DE1764581A1/en
Publication of GB1220687A publication Critical patent/GB1220687A/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
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/60—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor
    • H03K4/69—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor using a semiconductor device operating as an amplifier
    • H03K4/696—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor using a semiconductor device operating as an amplifier using means for reducing power dissipation or for shortening the flyback time, e.g. applying a higher voltage during flyback time
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • 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
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/60—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor
    • H03K4/62—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor using a semiconductor device operating as a switching device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K6/00—Manipulating pulses having a finite slope and not covered by one of the other main groups of this subclass
    • H03K6/02—Amplifying pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Details Of Television Scanning (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

1,220,687. Transistor cathode-ray tube deflection circuits. MARCONI CO. Ltd. 25 March, 1968 [5 June, 1967], No. 25887/67. Heading H3T. In a push-pull deflection circuit, the deflection coils 5, 6 are connected in series with energy storage inductors 7, 8 in the output circuit of an amplifier 3, 4 having common-mode feedback from a point 14, an alternative common-mode feedback path 18 being switched in when fast symbols are to be displayed. As shown, deflection signals at terminal 1 are compared with a differential feedback signal from a differential amplifier 11 and passed by differential amplifier 2 to power transistors 3, 4, supplying push-pull deflection coils 5, 6. A transformer 7, 8 provides a boosted supply voltage. Common-mode feedback from the tapping 14 of resistors 12, 13 is compared with a reference voltage 15 in a differential amplifier 16, integrated at 17 and fed via a switching circuit 23 to amplifier 2. When fast symbols are to be displayed, feedback circuit 14, 16, 17 is replaced by a commonmode circuit from the tapping of resistors 19, 20 which is compared in amplifier 21 with a reference 22. Integrator 17 is then omitted. In Fig. 3 (not shown) the normal common-mode feedback is taken from the collector side of deflection coils 5, 6. Coils 7, 8 are replaced by a common coil (78). Common mode feedback may alternatively be taken from the junction of deflection coils and common energy storage coil. The invention is applicable to marked raw radar display.
GB25887/67A 1967-06-05 1967-06-05 Improvements in or relating to electro-magnetic deflection coil arrangements for cathode ray tubes Expired GB1220687A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB25887/67A GB1220687A (en) 1967-06-05 1967-06-05 Improvements in or relating to electro-magnetic deflection coil arrangements for cathode ray tubes
US723683A US3488552A (en) 1967-06-05 1968-04-24 Electro-magnetic deflection coil arrangements for cathode ray tubes
SE05521/68A SE337631B (en) 1967-06-05 1968-04-24
NL6807500A NL6807500A (en) 1967-06-05 1968-05-28
BE716134D BE716134A (en) 1967-06-05 1968-06-05
DE19681764581 DE1764581A1 (en) 1967-06-05 1968-06-28 Circuit for the electromagnetic deflection coils of a cathode ray tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB25887/67A GB1220687A (en) 1967-06-05 1967-06-05 Improvements in or relating to electro-magnetic deflection coil arrangements for cathode ray tubes
DE19681764581 DE1764581A1 (en) 1967-06-05 1968-06-28 Circuit for the electromagnetic deflection coils of a cathode ray tube

Publications (1)

Publication Number Publication Date
GB1220687A true GB1220687A (en) 1971-01-27

Family

ID=25755388

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25887/67A Expired GB1220687A (en) 1967-06-05 1967-06-05 Improvements in or relating to electro-magnetic deflection coil arrangements for cathode ray tubes

Country Status (5)

Country Link
US (1) US3488552A (en)
BE (1) BE716134A (en)
DE (1) DE1764581A1 (en)
GB (1) GB1220687A (en)
NL (1) NL6807500A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147963A (en) * 1976-08-20 1979-04-03 Matsushita Electric Industrial Co., Ltd. Vertical deflection system for a television receiver

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778671A (en) * 1971-09-29 1973-12-11 Litton Systems Inc Differential magnetic deflection amplifier
US3800181A (en) * 1972-12-21 1974-03-26 Sperry Rand Corp Cathode ray tube high speed electromagnetic deflection flyback circuit
US4054816A (en) * 1976-07-02 1977-10-18 International Business Machines Corporation Sweep circuit for cathode-ray tube display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147963A (en) * 1976-08-20 1979-04-03 Matsushita Electric Industrial Co., Ltd. Vertical deflection system for a television receiver

Also Published As

Publication number Publication date
US3488552A (en) 1970-01-06
BE716134A (en) 1968-11-04
NL6807500A (en) 1968-12-06
DE1764581A1 (en) 1970-12-23

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