GB1103304A - Improvements in or relating to circuit arrangements for deriving predetermined waveform currents or voltages - Google Patents

Improvements in or relating to circuit arrangements for deriving predetermined waveform currents or voltages

Info

Publication number
GB1103304A
GB1103304A GB503865A GB503865A GB1103304A GB 1103304 A GB1103304 A GB 1103304A GB 503865 A GB503865 A GB 503865A GB 503865 A GB503865 A GB 503865A GB 1103304 A GB1103304 A GB 1103304A
Authority
GB
United Kingdom
Prior art keywords
transistor
base
feb
capacitor
voltages
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
GB503865A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs 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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1103304A publication Critical patent/GB1103304A/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
    • H03K4/69—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 an amplifier
    • H03K4/72—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 an amplifier combined with means for generating the driving pulses

Landscapes

  • Details Of Television Scanning (AREA)

Abstract

1,103,304. Transistor sawtooth circuits. TELEFUNKEN PATENTVERWERTUNGS, G.m.b.H. 5 Feb., 1965 [5 Feb., 1964], No. 5038/65. Heading H3T. In a field deflection circuit for a television receiver the effect of the curvature of the # v. Ib characteristic is corrected by connecting a capacitor 6 between the base and emitter of an emitter follower 4 and a further R.C. circuit 7, 8 between the base and a point of constant potential. As described, a blocking oscillator 3 is synchronized by field pulses at 22 and provides a pre-distorted sawtooth wave 29 which is passed by an emitter follower 4 and output transistor 12 to field deflection coils 13, 14. Capacitor 6 compensates for the base characteristic of transistor 4, further correction being provided by feedback via 26, 7. Resistors 17, 25, 8 respectively adjust frequency, amplitude and linearity. A negative temperature coefficient resistor 27, mounted adjacent transistor 12, stabilizes the working point of transistor 4. The charging voltage for capacitors 10 and 11 may be provided with a time varying component so as to improve linearity. Alternatively, the deflection coils 13, 14 may replace resistor 5.
GB503865A 1964-02-05 1965-02-05 Improvements in or relating to circuit arrangements for deriving predetermined waveform currents or voltages Expired GB1103304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET0025553 1964-02-05

Publications (1)

Publication Number Publication Date
GB1103304A true GB1103304A (en) 1968-02-14

Family

ID=7552154

Family Applications (1)

Application Number Title Priority Date Filing Date
GB503865A Expired GB1103304A (en) 1964-02-05 1965-02-05 Improvements in or relating to circuit arrangements for deriving predetermined waveform currents or voltages

Country Status (1)

Country Link
GB (1) GB1103304A (en)

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