GB1057702A - Transistor memory circuit - Google Patents

Transistor memory circuit

Info

Publication number
GB1057702A
GB1057702A GB287164A GB287164A GB1057702A GB 1057702 A GB1057702 A GB 1057702A GB 287164 A GB287164 A GB 287164A GB 287164 A GB287164 A GB 287164A GB 1057702 A GB1057702 A GB 1057702A
Authority
GB
United Kingdom
Prior art keywords
transistor
circuit
supply
state
capacitor
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
GB287164A
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.)
ZD Y PRUMYSLOVE AUTOMATISACE N
Original Assignee
ZD Y PRUMYSLOVE AUTOMATISACE N
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 ZD Y PRUMYSLOVE AUTOMATISACE N filed Critical ZD Y PRUMYSLOVE AUTOMATISACE N
Publication of GB1057702A publication Critical patent/GB1057702A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
    • H03K17/24—Storing the actual state when the supply voltage fails
    • 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
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Magnetic Recording (AREA)
  • Read Only Memory (AREA)

Abstract

1,057,702. Transistor bi-stable circuits. ZAVODY PRUMYSLOVE AUTOMATISACE, NARODNI PODNIK. Jan. 22, 1964 [Jan. 25, 1963], No. 2871/64. Heading H3T. A cross-coupled transistor bi-stable circuit comprises a square loop core for remembering the state of the circuit when the supply is interrupted and a further transistor arranged to ensure that the circuit switches to the remembered state when the supply is restored. When the supply to the bi-stable circuit 1, 2 is interrupted a core 11 remains set in accordance with the state of the circuit. Upon restoring the supply a current pulse passes through a capacitor 15 to the base of transistor 1 to switch it on. If this was not the previous state the transistor current switches over core 11 inducing a voltage pulse in winding 14 to cut off transistor 19. At the end of the pulse transistor 19 conducts and the drop of voltage at its collector is communicated through capacitor 22 to the base of transistor 1 to reverse the circuit. A capacitor 21 in series with transistor 19 charges and blocks the transistor current during normal operation.
GB287164A 1963-01-25 1964-01-22 Transistor memory circuit Expired GB1057702A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS43663 1963-01-25

Publications (1)

Publication Number Publication Date
GB1057702A true GB1057702A (en) 1967-02-08

Family

ID=5336418

Family Applications (1)

Application Number Title Priority Date Filing Date
GB287164A Expired GB1057702A (en) 1963-01-25 1964-01-22 Transistor memory circuit

Country Status (3)

Country Link
DE (1) DE1233014B (en)
FR (1) FR1455777A (en)
GB (1) GB1057702A (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070225B (en) * 1958-11-07 1959-12-03 Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen
FR1257064A (en) * 1960-02-13 1961-03-31 Renault Improvements to memory circuits
CH388380A (en) * 1960-11-24 1965-02-28 Licentia Gmbh Arrangement with saturable, magnetic components on bistable trigger circuits
FR1309664A (en) * 1961-01-05 1962-11-16 Ass Elect Ind Enhancements to electronic memory devices

Also Published As

Publication number Publication date
DE1233014B (en) 1967-01-26
FR1455777A (en) 1966-10-21

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