GB855332A - Improvements relating to electrical waveform generating circuits - Google Patents

Improvements relating to electrical waveform generating circuits

Info

Publication number
GB855332A
GB855332A GB2211856A GB2211856A GB855332A GB 855332 A GB855332 A GB 855332A GB 2211856 A GB2211856 A GB 2211856A GB 2211856 A GB2211856 A GB 2211856A GB 855332 A GB855332 A GB 855332A
Authority
GB
United Kingdom
Prior art keywords
capacitor
electronic switch
circuit
resistor
linear
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
GB2211856A
Inventor
Graham John Scoles
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co 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
Application filed by Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB2211856A priority Critical patent/GB855332A/en
Publication of GB855332A publication Critical patent/GB855332A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

855,332. Valve sawtooth and bistable circuits. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. July 22, 1957 [July 17, 1956], No. 22118/56. Class 40(6). A free-running waveform generator comprises a capacitor C in series with a charge path and in parallel with a discharge path, one of the paths comprising a constant current impedance such as V1, the other comprising an electronic switch such as V2, the voltage level across the capacitor C being applied to a bistable circuit such as V4, V5 to change the circuit from one state to another, the bistable circuit controlling the electronic switch to open it in one stable state to provide a linear change of voltage in one direction through the constant current impedance and to close the electronic switch in the other stable state to provide substantially instantaneous flyback. As shown, the discharge is made linear by feedback across resistor Rl, The frequency is controlled by variable resistor R2 or by variation of capacitor C. The amplitude is controlled by variation of the bias applied to the clamping diodes V6, V7 which determine the changeover levels of the bistable circuit V4, V5. A very short pulse having adjustable frequency and amplitude may be obtained from a resistor in V5 anode circuit. Modifications. V1 may be cut off on the suppressor grid during charging. Linear charging may be provided by interchanging V1 and V2. Reference is made in the Provisional Specification to the replacement of V3 by a potential divider.
GB2211856A 1956-07-17 1956-07-17 Improvements relating to electrical waveform generating circuits Expired GB855332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2211856A GB855332A (en) 1956-07-17 1956-07-17 Improvements relating to electrical waveform generating circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2211856A GB855332A (en) 1956-07-17 1956-07-17 Improvements relating to electrical waveform generating circuits

Publications (1)

Publication Number Publication Date
GB855332A true GB855332A (en) 1960-11-30

Family

ID=10174180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2211856A Expired GB855332A (en) 1956-07-17 1956-07-17 Improvements relating to electrical waveform generating circuits

Country Status (1)

Country Link
GB (1) GB855332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156875A (en) * 1961-06-14 1964-11-10 Ibm Constant amplitude, variable frequency sawtooth generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156875A (en) * 1961-06-14 1964-11-10 Ibm Constant amplitude, variable frequency sawtooth generator

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