GB1268685A - Deflection circuit for cathode ray tube - Google Patents

Deflection circuit for cathode ray tube

Info

Publication number
GB1268685A
GB1268685A GB3209769A GB3209769A GB1268685A GB 1268685 A GB1268685 A GB 1268685A GB 3209769 A GB3209769 A GB 3209769A GB 3209769 A GB3209769 A GB 3209769A GB 1268685 A GB1268685 A GB 1268685A
Authority
GB
United Kingdom
Prior art keywords
devices
ray tube
current
deflection circuit
transistor
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
GB3209769A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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
Priority claimed from DE19681762544 external-priority patent/DE1762544C3/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1268685A publication Critical patent/GB1268685A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H04N3/185—Maintaining dc voltage constant

Abstract

1,268,685. Cathode-ray tube deflection circuits. INTERNATIONAL STANDARD ELECTRIC CORP. 25 June, 1969 [4 July, 1968], No. 32097/69. Addition to 1,164,574. Heading H3T. [Also in Division H2] In a cathode-ray tube deflection circuit using a transistor 2 in series with a thyristor 3, a control circuit (such as 16, 17) is provided to ensure that devices 2 and 3 remain conductive in the event of excess current due to CRT flash-over, the current being limited by a resistance capacitance network 8 ... 12. In the line deflection circuit described, devices 2 and 3 are periodically turned on and off by line pulses 1 fed to the base of transistor 2. In the event of CRT flash-over, the increased current in resistor 14 will turn on transistors 16 and 17 so as to prevent devices 2 and 3 being turned off by pulses 1. In Fig. 2 (not shown) the protective circuit comprises a single transistor controlled by the current in a resistor connected between devices 2 and 3.
GB3209769A 1968-07-04 1969-06-25 Deflection circuit for cathode ray tube Expired GB1268685A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681762544 DE1762544C3 (en) 1968-07-04 Horizontal deflection circuit with overload protection for television receivers

Publications (1)

Publication Number Publication Date
GB1268685A true GB1268685A (en) 1972-03-29

Family

ID=5697056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3209769A Expired GB1268685A (en) 1968-07-04 1969-06-25 Deflection circuit for cathode ray tube

Country Status (6)

Country Link
BE (1) BE738695A (en)
FI (1) FI53527C (en)
FR (1) FR2012308B2 (en)
GB (1) GB1268685A (en)
NO (1) NO130140B (en)
SE (1) SE351098B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189782A (en) * 1962-11-20 1965-06-15 Westinghouse Electric Corp Television horizontal scanning circuit utilizing controlled rectifiers

Also Published As

Publication number Publication date
FR2012308A2 (en) 1970-03-20
SE351098B (en) 1972-11-13
FR2012308B2 (en) 1973-02-02
FI53527B (en) 1978-01-31
FI53527C (en) 1978-05-10
DE1762544B2 (en) 1976-01-02
NO130140B (en) 1974-07-08
BE738695A (en) 1970-03-11
DE1762544A1 (en) 1970-08-27

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