GB563794A - Improvements relating to multivibrators - Google Patents

Improvements relating to multivibrators

Info

Publication number
GB563794A
GB563794A GB560843A GB560843A GB563794A GB 563794 A GB563794 A GB 563794A GB 560843 A GB560843 A GB 560843A GB 560843 A GB560843 A GB 560843A GB 563794 A GB563794 A GB 563794A
Authority
GB
United Kingdom
Prior art keywords
valve
potential
grid
screen
follower mechanism
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
GB560843A
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.)
Ferranti International PLC
Original Assignee
Ferranti 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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB560843A priority Critical patent/GB563794A/en
Publication of GB563794A publication Critical patent/GB563794A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/04—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback
    • H03K3/05—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback
    • H03K3/06—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback using at least two tubes so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/08—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback using at least two tubes so coupled that the input of one is derived from the output of another, e.g. multivibrator astable

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

563,794. Electric follow-up systems. FERRANTI, Ltd., and WOOD, H. April 8, 1943, No. 5008. [Class 40 (i)] [Also in Group XL] A multivibrator of the type having a screening grid and the anodes and control grids crossconnected by condensers, is provided with means for applying a high positive potential to the screen grid of each of the valves during its conductive periods and the low positive potential during its non-conductive periods. As shown, the screen potential is arranged to vary in the required manner by the resistances 20, 21 cross-connected from the screen grid of one valve to the anode of the other valve. In this way the amount of negative potential required to be applied to the control grid is reduced for effective control. The invention is applicable to operating automatic follower mechanism so that movement of the controlling member may cause corresponding movement of the controlled member. In such a case, energizing windings of two electromagnetic clutches are included in the anode circuits and arranged to drive shafts in opposite directions according to which valve is energized. With the controlling member and the controlled member in correspondence the valves conduct alternately and no resultant motion of the shaft occurs. With lack of balance the potential derived from the deviation causes the operation of one or other valve and the driving of the follower mechanism to correct the deviation.
GB560843A 1943-04-08 1943-04-08 Improvements relating to multivibrators Expired GB563794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB560843A GB563794A (en) 1943-04-08 1943-04-08 Improvements relating to multivibrators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB560843A GB563794A (en) 1943-04-08 1943-04-08 Improvements relating to multivibrators

Publications (1)

Publication Number Publication Date
GB563794A true GB563794A (en) 1944-08-30

Family

ID=9799286

Family Applications (1)

Application Number Title Priority Date Filing Date
GB560843A Expired GB563794A (en) 1943-04-08 1943-04-08 Improvements relating to multivibrators

Country Status (1)

Country Link
GB (1) GB563794A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2569827A (en) * 1948-12-29 1951-10-02 Ibm Polarity pulsing of triggers
US2601444A (en) * 1949-10-12 1952-06-24 Bell Telephone Labor Inc Stabilized multivibrator oscillator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2569827A (en) * 1948-12-29 1951-10-02 Ibm Polarity pulsing of triggers
US2601444A (en) * 1949-10-12 1952-06-24 Bell Telephone Labor Inc Stabilized multivibrator oscillator

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