FR2336832A1 - Vertical screen correction circuit for TV receiver - has two cross coupled differential amplifiers acting as multiplier and with transistor control - Google Patents

Vertical screen correction circuit for TV receiver - has two cross coupled differential amplifiers acting as multiplier and with transistor control

Info

Publication number
FR2336832A1
FR2336832A1 FR7638719A FR7638719A FR2336832A1 FR 2336832 A1 FR2336832 A1 FR 2336832A1 FR 7638719 A FR7638719 A FR 7638719A FR 7638719 A FR7638719 A FR 7638719A FR 2336832 A1 FR2336832 A1 FR 2336832A1
Authority
FR
France
Prior art keywords
correction circuit
multiplier
differential amplifiers
receiver
coupled
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.)
Granted
Application number
FR7638719A
Other languages
French (fr)
Other versions
FR2336832B3 (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2336832A1 publication Critical patent/FR2336832A1/en
Application granted granted Critical
Publication of FR2336832B3 publication Critical patent/FR2336832B3/fr
Granted 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
    • H03K4/04—Generating pulses having essentially a finite slope or stepped portions having parabolic shape

Landscapes

  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

The vertical raster correction circuit, for a television receiver, produces a parabolic signal from a sawtooth waveform. The sawtooth (20) is applied to both inputs of a multiplication stage and the parabolic waveform appears at the output (35, 36). The multiplier consists of two cross-coupled differential amplifiers (1-4) each of whose coupled emitters is controlled by the collector current of a further differential amplifier (7, 8). The emitter of the latter is coupled over a resistor (9, 10) to a constant dc source (11). The cross-coupled transistors are controlled in opposition by the voltage drop across a pair of transistors (29, 30) emitter resistors.
FR7638719A 1975-12-24 1976-12-22 Vertical screen correction circuit for TV receiver - has two cross coupled differential amplifiers acting as multiplier and with transistor control Granted FR2336832A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752558554 DE2558554A1 (en) 1975-12-24 1975-12-24 CIRCUIT ARRANGEMENT FOR GENERATING A PARABEL-SHAPED SIGNAL FROM A SAW-TOOTH-SHAPED CONTROL SIZE

Publications (2)

Publication Number Publication Date
FR2336832A1 true FR2336832A1 (en) 1977-07-22
FR2336832B3 FR2336832B3 (en) 1979-08-31

Family

ID=5965535

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7638719A Granted FR2336832A1 (en) 1975-12-24 1976-12-22 Vertical screen correction circuit for TV receiver - has two cross coupled differential amplifiers acting as multiplier and with transistor control

Country Status (4)

Country Link
JP (1) JPS5292421A (en)
AU (1) AU2090776A (en)
DE (1) DE2558554A1 (en)
FR (1) FR2336832A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118142A1 (en) * 1983-02-02 1984-09-12 Koninklijke Philips Electronics N.V. Circuit for generating a deflection current through the field deflection coil of a picture display device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7704062A (en) * 1977-04-14 1978-10-17 Philips Nv CIRCUIT FOR GENERATING A PERIODIC PARABOLIC SIGNAL.
EP0028743B1 (en) * 1979-11-08 1983-06-08 Hewlett-Packard GmbH Circuit for generating a sine wave from a triangular wave
DE4316027A1 (en) * 1993-05-13 1994-11-17 Telefunken Microelectron Circuit arrangement for rectifying AC signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118142A1 (en) * 1983-02-02 1984-09-12 Koninklijke Philips Electronics N.V. Circuit for generating a deflection current through the field deflection coil of a picture display device

Also Published As

Publication number Publication date
AU2090776A (en) 1978-06-29
JPS5292421A (en) 1977-08-03
FR2336832B3 (en) 1979-08-31
DE2558554A1 (en) 1977-06-30

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Legal Events

Date Code Title Description
ST Notification of lapse