IE41941L - Deflection system for television receivers - Google Patents

Deflection system for television receivers

Info

Publication number
IE41941L
IE41941L IE752512A IE251275A IE41941L IE 41941 L IE41941 L IE 41941L IE 752512 A IE752512 A IE 752512A IE 251275 A IE251275 A IE 251275A IE 41941 L IE41941 L IE 41941L
Authority
IE
Ireland
Prior art keywords
vertical
pulses
capacitor
current
vertical deflection
Prior art date
Application number
IE752512A
Other versions
IE41941B1 (en
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
Priority claimed from GB7161/75A external-priority patent/GB1528981A/en
Application filed by Rca Corp filed Critical Rca Corp
Publication of IE41941L publication Critical patent/IE41941L/en
Publication of IE41941B1 publication Critical patent/IE41941B1/en

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
    • H03K4/83—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices with more than two PN junctions or with more than three electrodes or more than one electrode connected to the same conductivity region
    • H03K4/835—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices with more than two PN junctions or with more than three electrodes or more than one electrode connected to the same conductivity region using pulse-modulation techniques for the generation of the sawtooth wave, e.g. class D, switched mode

Abstract

VERTICAL DEFLECTION CIRCUIT First and second controllable switching stages are respectively coupled between a source of horizontal retrace pulses and a capacitor connected across a vertical deflection winding. A modulator is coupled to the switching stages for controlling the timing of conduction thereof relative to the timing of the horizontal retrace pulses. One switching stage charges the capacitor in one polarity with pulses of current of gradually decreasing amplitude and duration during a first portion of the vertical trace interval and the other switching stage charges the capacitor in the opposite polarity with pulses of current of gradually increasing amplitude and duration during a second portion of the vertical trace interval. The capacitor supplies scanning current of first and second polarities to the vertical deflection winding during respective first and second portions of each vertical trace interval. The energy for producing the vertical sawtooth scanning current is thus derived from horizontal (line) scanning pulses which are coupled to the vertical deflection winding. [CA1069611A]
IE2512/75A 1975-02-20 1975-11-18 Deflection system such as for television receivers including a switched mode vertical (field) deflection circuit IE41941B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7161/75A GB1528981A (en) 1975-02-20 1975-02-20 Deflection system such as for television receivers including a switched mode vertical(field)reflection circuit
US05/595,809 US4048544A (en) 1975-02-20 1975-07-14 Switched vertical deflection system

Publications (2)

Publication Number Publication Date
IE41941L true IE41941L (en) 1976-08-20
IE41941B1 IE41941B1 (en) 1980-04-23

Family

ID=26241244

Family Applications (1)

Application Number Title Priority Date Filing Date
IE2512/75A IE41941B1 (en) 1975-02-20 1975-11-18 Deflection system such as for television receivers including a switched mode vertical (field) deflection circuit

Country Status (14)

Country Link
AU (1) AU505114B2 (en)
BE (1) BE838687A (en)
CA (1) CA1069611A (en)
CH (1) CH614821A5 (en)
DD (1) DD123634A5 (en)
DK (1) DK150437C (en)
FI (1) FI65878C (en)
FR (1) FR2318545A1 (en)
IE (1) IE41941B1 (en)
NL (1) NL188008C (en)
NO (1) NO760236L (en)
NZ (1) NZ180050A (en)
SE (1) SE412678B (en)
YU (1) YU335575A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712052C2 (en) * 1977-03-18 1985-06-27 Standard Elektrik Lorenz Ag, 7000 Stuttgart Vertical deflection circuit
US4134046A (en) * 1977-08-31 1979-01-09 Rca Corporation Retrace blanking pulse generator with delayed transition
FR2438395A1 (en) * 1978-07-27 1980-04-30 Thomson Brandt SWITCHED FRAME SCANNING CIRCUIT, AND VIDEO FREQUENCY RECEIVER PROVIDED WITH SUCH A CIRCUIT
FR2471101A2 (en) * 1978-07-27 1981-06-12 Thomson Brandt TV frame sweep DC voltage generator - feeds vertical sweep circuit and video amplifier supply from common winding
US4234826A (en) * 1979-06-28 1980-11-18 Rca Corporation Synchronous switched vertical deflection driven during both trace and retrace intervals
DE3063543D1 (en) * 1979-12-04 1983-07-07 Thomson Brandt D.c. power supply generator and television receiver comprising such a generator
FR2473238A1 (en) * 1980-01-08 1981-07-10 Thomson Brandt CONTROL CIRCUIT FOR SWITCH-MODE CIRCUIT, AND ESPECIALLY FOR FRAME SCANNING CIRCUIT OF A VIDEOFREQUENCY RECEIVER
US4338549A (en) * 1980-03-20 1982-07-06 Rca Corporation Vertical deflection circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1076092A (en) * 1965-01-15 1967-07-19 Mullard Ltd Improvements in or relating to time-bases
US3939380A (en) * 1974-02-21 1976-02-17 Rca Corporation Class D amplifier

Also Published As

Publication number Publication date
AU505114B2 (en) 1979-11-08
CA1069611A (en) 1980-01-08
NO760236L (en) 1976-08-23
FI760356A (en) 1976-08-21
IE41941B1 (en) 1980-04-23
AU1115676A (en) 1977-09-01
YU335575A (en) 1982-05-31
FI65878B (en) 1984-03-30
NL188008B (en) 1991-10-01
SE7601627L (en) 1976-08-21
FR2318545A1 (en) 1977-02-11
NL7601688A (en) 1976-08-24
DK150437B (en) 1987-02-23
NL188008C (en) 1992-03-02
FI65878C (en) 1984-07-10
SE412678B (en) 1980-03-10
NZ180050A (en) 1978-12-18
DD123634A5 (en) 1977-01-05
CH614821A5 (en) 1979-12-14
BE838687A (en) 1976-06-16
DK150437C (en) 1987-07-13
DK68376A (en) 1976-08-21
FR2318545B1 (en) 1982-10-01

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