GB655722A - Improvements relating to circuits for generating electrical oscillations of sawtoothwaveform - Google Patents

Improvements relating to circuits for generating electrical oscillations of sawtoothwaveform

Info

Publication number
GB655722A
GB655722A GB11961/48A GB1196148A GB655722A GB 655722 A GB655722 A GB 655722A GB 11961/48 A GB11961/48 A GB 11961/48A GB 1196148 A GB1196148 A GB 1196148A GB 655722 A GB655722 A GB 655722A
Authority
GB
United Kingdom
Prior art keywords
capacitor
valve
resistor
suppressor grid
generated
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
GB11961/48A
Inventor
Eric William Bull
Max Eric Pemberton
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 to NL83705D priority Critical patent/NL83705C/xx
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB11961/48A priority patent/GB655722A/en
Priority to US89872A priority patent/US2620443A/en
Priority to FR985328D priority patent/FR985328A/en
Publication of GB655722A publication Critical patent/GB655722A/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
    • H03K4/16—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 using a single tube with positive feedback through transformer, e.g. blocking oscillator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details Of Television Scanning (AREA)
  • Dc-Dc Converters (AREA)

Abstract

655,722. Sawtooth generating circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. May 1, 1948, No. 11961. [Class 40 (vi)] In a circuit of the type in which a sawtooth wave is generated by charging a capacitor and discharging it rapidly through a pentode valve which is rendered alternately conducting and non-conducting by intercoupling a pair of its electrodes other than the suppressor grid, for example, by a transformer or a valve, the suppressor grid is connected through a resistor to a positive voltage, and a further capacitor is arranged to be charged through the resistor and discharged through the valve. The valve shown operates as a blocking oscillator and the sawtooth wave is generated by charging and discharging the capacitor 12. The suppressor grid is connected to H.T. through a resistor 14 and to earth through a capacitor 12. A further sawtooth wave is thus generated at the suppressor grid, which grid is thereby maintained positive during the flyback increasing the rate of discharge of the main capacitor.
GB11961/48A 1948-05-01 1948-05-01 Improvements relating to circuits for generating electrical oscillations of sawtoothwaveform Expired GB655722A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL83705D NL83705C (en) 1948-05-01
GB11961/48A GB655722A (en) 1948-05-01 1948-05-01 Improvements relating to circuits for generating electrical oscillations of sawtoothwaveform
US89872A US2620443A (en) 1948-05-01 1949-04-27 Circuits for generating electrical oscillations of sawtooth waveform
FR985328D FR985328A (en) 1948-05-01 1949-04-29 Circuit generating electric sawtooth oscillations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11961/48A GB655722A (en) 1948-05-01 1948-05-01 Improvements relating to circuits for generating electrical oscillations of sawtoothwaveform

Publications (1)

Publication Number Publication Date
GB655722A true GB655722A (en) 1951-08-01

Family

ID=9995844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11961/48A Expired GB655722A (en) 1948-05-01 1948-05-01 Improvements relating to circuits for generating electrical oscillations of sawtoothwaveform

Country Status (4)

Country Link
US (1) US2620443A (en)
FR (1) FR985328A (en)
GB (1) GB655722A (en)
NL (1) NL83705C (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB455497A (en) * 1935-03-21 1936-10-21 Eric Lawrence Casling White Improvements in and relating to generators of electrical oscillations
US2462078A (en) * 1944-09-15 1949-02-22 Int Standard Electric Corp Oscillation generator
US2468420A (en) * 1945-12-11 1949-04-26 Rca Corp Blocking oscillator

Also Published As

Publication number Publication date
FR985328A (en) 1951-07-17
NL83705C (en)
US2620443A (en) 1952-12-02

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