GB694531A - Improvements in or relating to electronic sawtooth oscillation generators - Google Patents

Improvements in or relating to electronic sawtooth oscillation generators

Info

Publication number
GB694531A
GB694531A GB831851A GB831851A GB694531A GB 694531 A GB694531 A GB 694531A GB 831851 A GB831851 A GB 831851A GB 831851 A GB831851 A GB 831851A GB 694531 A GB694531 A GB 694531A
Authority
GB
United Kingdom
Prior art keywords
valve
saw
capacitor
tooth
anode
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
GB831851A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB831851A priority Critical patent/GB694531A/en
Priority to FR1053414D priority patent/FR1053414A/en
Publication of GB694531A publication Critical patent/GB694531A/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
    • H03K4/10—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
    • H03K4/39—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 an amplifier
    • H03K4/43—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 an amplifier combined with means for generating the driving pulses

Landscapes

  • Details Of Television Scanning (AREA)

Abstract

694,531. Saw-tooth generating circuits. GENERAL ELECTRIC CO., Ltd., and TOWNSEND, G. B. March 24, 1952 [April 10, 1951], No. 8318/51. Class 40 (vi). A saw-tooth generator of the type in which a capacitance is charged through a resistance and discharged rapidly through a valve, has a positive voltage connected in series with the discharge path to prevent the anode voltage of the valve falling to a value at which the anode resistance is high, means being provided to prevent the capacitor charging reversely. The capacitor 2 in the circuit shown is charged through resistor 1 and periodically discharged through valve 8 and the required positive voltage is developed across a resistor 6 of a potentiometer 5, 6, reverse charging being prevented by a diode 10. The saw-tooth output is applied to the deflection coils of a television set through an amplifier valve 15 which is periodically rendered non-conducting by frame synchronizing pulses derived from the input at 16 by integration in circuit 17, 18. The resulting positive pulse at the anode of valve 15 renders valve 8 conducting to discharge the capacitor 2. A capacitor 21 is charged negatively during the flyback by grid current and maintains valve 8 cut off during the succeeding long flank. Resistors 22, 23 and 24 adjust the frequency amplitude and waveform of the saw-tooth output. It is suggested that the discharging valve 8 alternatively could be rendered periodically conductive by connecting it in a blocking oscillator circuit.
GB831851A 1951-04-10 1951-04-10 Improvements in or relating to electronic sawtooth oscillation generators Expired GB694531A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB831851A GB694531A (en) 1951-04-10 1951-04-10 Improvements in or relating to electronic sawtooth oscillation generators
FR1053414D FR1053414A (en) 1951-04-10 1952-04-04 Electronic sawtooth oscillation generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB831851A GB694531A (en) 1951-04-10 1951-04-10 Improvements in or relating to electronic sawtooth oscillation generators

Publications (1)

Publication Number Publication Date
GB694531A true GB694531A (en) 1953-07-22

Family

ID=9850234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB831851A Expired GB694531A (en) 1951-04-10 1951-04-10 Improvements in or relating to electronic sawtooth oscillation generators

Country Status (2)

Country Link
FR (1) FR1053414A (en)
GB (1) GB694531A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908774A (en) * 1955-09-16 1959-10-13 Hals Per Jahrmann Cathode-follower for pulse operation
US2913624A (en) * 1957-09-16 1959-11-17 Gen Electric Vertical output stage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908774A (en) * 1955-09-16 1959-10-13 Hals Per Jahrmann Cathode-follower for pulse operation
US2913624A (en) * 1957-09-16 1959-11-17 Gen Electric Vertical output stage

Also Published As

Publication number Publication date
FR1053414A (en) 1954-02-02

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