GB1140571A - Transistorised line time base circuit including phase-frequency comparator arrangement for television receivers - Google Patents

Transistorised line time base circuit including phase-frequency comparator arrangement for television receivers

Info

Publication number
GB1140571A
GB1140571A GB392066A GB392066A GB1140571A GB 1140571 A GB1140571 A GB 1140571A GB 392066 A GB392066 A GB 392066A GB 392066 A GB392066 A GB 392066A GB 1140571 A GB1140571 A GB 1140571A
Authority
GB
United Kingdom
Prior art keywords
stage
time base
line time
base circuit
transistorised
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
GB392066A
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB1140571A publication Critical patent/GB1140571A/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
    • H03K4/62—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
    • H03K4/64—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 combined with means for generating the driving pulses
    • H03K4/66—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 combined with means for generating the driving pulses using a single device with positive feedback, e.g. blocking oscillator
    • 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
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H03K4/28—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device
    • H03K4/32—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device combined with means for generating the driving pulses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H04N5/126—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal indirectly commands a frequency generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)
  • Dc-Dc Converters (AREA)

Abstract

1,140,571. Line time base circuit; automatic phase control. LOEWE OPTA A.G. 28 Jan., 1966 [29 Jan., 1965], No. 3920/66. Heading H3A. A transistorized line time base circuit comprises sync. separator stages T1, T2, phase comparator stage V, impedance transformer stage T3 and a blocking oscillator stage T4 directly coupled to power output stage T5. Retro-active effects on the blocking oscillator stage due to its direct coupling to the output stage are reduced by capacitor C1 connected between the oscillator base and earth and feedback of the blocking oscillator signal to the emitter circuit of the stage T3 is neutralized by the signal induced in winding E of transformer TR2. Shunting of the phase comparator stage by the impedance of the impedance transformer stage is reduced by resistor R10 and the phase comparator stage is balanced by variable resistor R1.
GB392066A 1965-01-29 1966-01-28 Transistorised line time base circuit including phase-frequency comparator arrangement for television receivers Expired GB1140571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965L0049846 DE1266803B (en) 1965-01-29 1965-01-29 Transistorized line deflection circuit including phase-frequency comparator for television receivers

Publications (1)

Publication Number Publication Date
GB1140571A true GB1140571A (en) 1969-01-22

Family

ID=7273177

Family Applications (1)

Application Number Title Priority Date Filing Date
GB392066A Expired GB1140571A (en) 1965-01-29 1966-01-28 Transistorised line time base circuit including phase-frequency comparator arrangement for television receivers

Country Status (4)

Country Link
BE (1) BE675728A (en)
DE (1) DE1266803B (en)
GB (1) GB1140571A (en)
NL (1) NL6601123A (en)

Also Published As

Publication number Publication date
DE1266803B (en) 1968-04-25
NL6601123A (en) 1966-08-01
BE675728A (en) 1966-05-16

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