GB1564581A - Parabolic current generator - Google Patents

Parabolic current generator Download PDF

Info

Publication number
GB1564581A
GB1564581A GB3198/77A GB319877A GB1564581A GB 1564581 A GB1564581 A GB 1564581A GB 3198/77 A GB3198/77 A GB 3198/77A GB 319877 A GB319877 A GB 319877A GB 1564581 A GB1564581 A GB 1564581A
Authority
GB
United Kingdom
Prior art keywords
current
parabolic
coupled
networks
resistance
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
GB3198/77A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of GB1564581A publication Critical patent/GB1564581A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/20—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating powers, roots, polynomes, mean square values, standard deviation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/30—Arrangements for performing computing operations, e.g. operational amplifiers for interpolation or extrapolation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/04—Generating pulses having essentially a finite slope or stepped portions having parabolic shape
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/28—Arrangements for convergence or focusing
    • H04N9/285—Arrangements for convergence or focusing using quadrupole lenses

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
GB3198/77A 1976-02-02 1977-01-26 Parabolic current generator Expired GB1564581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/654,719 US4028586A (en) 1976-02-02 1976-02-02 Parabolic current generator

Publications (1)

Publication Number Publication Date
GB1564581A true GB1564581A (en) 1980-04-10

Family

ID=24625989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3198/77A Expired GB1564581A (en) 1976-02-02 1977-01-26 Parabolic current generator

Country Status (8)

Country Link
US (1) US4028586A (enExample)
JP (1) JPS5294724A (enExample)
CA (1) CA1059223A (enExample)
DE (1) DE2704285C3 (enExample)
FR (1) FR2340008A1 (enExample)
GB (1) GB1564581A (enExample)
IT (1) IT1077504B (enExample)
PL (1) PL112004B1 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097784A (en) * 1977-05-31 1978-06-27 Gte Sylvania Incorporated Quadrupole convergence circuit
JPS5424453U (enExample) * 1977-07-16 1979-02-17
GB2044049A (en) * 1979-03-06 1980-10-08 Ferranti Ltd Cathode ray tube assemblies
JPS58212039A (ja) * 1982-06-01 1983-12-09 Denki Onkyo Co Ltd 偏向ヨ−ク装置
JPH0750935B2 (ja) * 1984-05-30 1995-05-31 株式会社村田製作所 偏向ヨ−ク装置
US5341071A (en) * 1993-09-03 1994-08-23 Thomson Consumer Electronics, Inc. Piecewise linearized focus voltage circuit for television apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1353004A (en) * 1970-05-18 1974-05-15 Rca Corp Dynamic convergence circuits
US3821591A (en) * 1973-01-10 1974-06-28 Gen Electric Circuit for driving quadripole convergence means
US3930185A (en) * 1974-05-20 1975-12-30 Rca Corp Display system with simplified convergence
US3911295A (en) * 1974-11-29 1975-10-07 Rca Corp Waveform generating circuit

Also Published As

Publication number Publication date
PL112004B1 (en) 1980-09-30
CA1059223A (en) 1979-07-24
JPS5294724A (en) 1977-08-09
DE2704285C3 (de) 1980-01-10
FR2340008B1 (enExample) 1983-01-28
DE2704285B2 (de) 1979-05-31
FR2340008A1 (fr) 1977-08-26
IT1077504B (it) 1985-05-04
US4028586A (en) 1977-06-07
DE2704285A1 (de) 1977-08-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee