GB707688A - Improvements in or relating to apparatus for generating electric signals - Google Patents

Improvements in or relating to apparatus for generating electric signals

Info

Publication number
GB707688A
GB707688A GB401152A GB401152A GB707688A GB 707688 A GB707688 A GB 707688A GB 401152 A GB401152 A GB 401152A GB 401152 A GB401152 A GB 401152A GB 707688 A GB707688 A GB 707688A
Authority
GB
United Kingdom
Prior art keywords
resistor
valve
conducting
sweep
pulse
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
GB401152A
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.)
ROBERT HYLTON KIRKNESS
General Electric Co PLC
Original Assignee
ROBERT HYLTON KIRKNESS
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 ROBERT HYLTON KIRKNESS, General Electric Co PLC filed Critical ROBERT HYLTON KIRKNESS
Priority to GB401152A priority Critical patent/GB707688A/en
Publication of GB707688A publication Critical patent/GB707688A/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
    • H03K4/12—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 voltage is produced across a capacitor
    • H03K4/24—Boot-strap generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

707,688. Sawtooth generating circuits. GENERAL ELECTRIC CO., Ltd., and KIRKNESS, R. H. Feb. 16, 1953 [Feb. 14, 1952], No. 4011/52. Class 40 (6) In a circuit of the "bootstrap" type in which a capacitor is charged over a resistor, part at least is connected in series with a rectifier which is biased to a non-conducting state over part of the sweep. Capacitor 1, Fig. 1, normally held discharged by valve 12 conducting, charges when a negative pulse cuts off valve 12, the resulting rise in potential being fed out through cathode follower 6 which also feeds back over coupling capacitor 8. Diode 17 is held cut-off whilst valve 18 conducts but upon a negative auxiliary pulse being applied to valve 18 during the sweep, resistor 16 is connected effectively in parallel with resistor 2 due to diode 17 conducting. In a modification, Fig. 2, the main sweep pulse is fed to the suppressor grid and the auxiliary pulse to the control grid of a pentode 24, resistor 16 being connected to the screen grid. In a further modification, Fig. 3 (not shown), in which the sweep rate is decreased during the auxiliary pulse, the resistor 2 is omitted and the valve 18 is arranged to be normally non-conducting and fed with a postive auxiliary pulse to render it conducting.
GB401152A 1952-02-14 1952-02-14 Improvements in or relating to apparatus for generating electric signals Expired GB707688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB401152A GB707688A (en) 1952-02-14 1952-02-14 Improvements in or relating to apparatus for generating electric signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB401152A GB707688A (en) 1952-02-14 1952-02-14 Improvements in or relating to apparatus for generating electric signals

Publications (1)

Publication Number Publication Date
GB707688A true GB707688A (en) 1954-04-21

Family

ID=9769078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB401152A Expired GB707688A (en) 1952-02-14 1952-02-14 Improvements in or relating to apparatus for generating electric signals

Country Status (1)

Country Link
GB (1) GB707688A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975647A (en) * 1974-06-06 1976-08-17 Keishin Matsumoto, Director-General, Agency of Industrial Science and Technology Bootstrap circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975647A (en) * 1974-06-06 1976-08-17 Keishin Matsumoto, Director-General, Agency of Industrial Science and Technology Bootstrap circuit

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