GB872433A - Improvements in or relating to bistable flip-flop circuits and relay circuit arrangements incorporating such circuits - Google Patents

Improvements in or relating to bistable flip-flop circuits and relay circuit arrangements incorporating such circuits

Info

Publication number
GB872433A
GB872433A GB859359A GB859359A GB872433A GB 872433 A GB872433 A GB 872433A GB 859359 A GB859359 A GB 859359A GB 859359 A GB859359 A GB 859359A GB 872433 A GB872433 A GB 872433A
Authority
GB
United Kingdom
Prior art keywords
transistor
switches
circuit
circuits
switch
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
GB859359A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB872433A publication Critical patent/GB872433A/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
    • H03K3/26—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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/64—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors having inductive loads

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

872,433. Protective arrangements. SIEMENS - SCHUCKERTWERKE A.G. March 12, 1959 [March 14, 1958], No. 8593/59. Class 38 (5). [Also in Group XL (c)] A b-istable circuit for use in an electric protective system comprises two transistors having their emitter and base circuits crosscoupled and having two control switches respectively connecting the base at one of the transistors to the emitter supply terminal and the collector supply terminal whereby alternate operation of the switches causes the circuit to change from one stable state to the other. In Fig. 1 two transistors 3 and 5 have their collector and emitter electrodes cross-coupled through resistors 10 and 12 respectively so that either one or the other transistor is conducting. Switches 13 and 14 are connected between base and emitter and base and collector circuits of transistor 3, the latter connection including a resistor 15 or a capacitor. Operation of switch 14 renders transistor 3 conducting and 5 non- conducting and subsequent operation of switch 13 renders transistor 3 non-conducting and transistor 5 conducting. A lamp 7 is connected in series with the collector of transistor 5 and a relay is operated by the transistor amplifier 8 connected to the collector of transistor 3. In a protective system (Fig. 2), a number of such bi-stable circuits A, B, C, &c. are connected to a common mono-stable or bi-stable output circuit D adapted to operate a horn, each bi-stable circuit A, B, C, &c. having an individual switch 13 associated with a circuit to be protected and a common switch 14 to restore the circuits to normal after operation by the individual switches. In addition, a common switch 42 may be provided in parallel with switches 13 and a further switch 38 may be provided in the horn circuit, both switches being provided to permit the operator to test the operation of the circuit. The switches 13 could be operated when excess or reverse current blows in one of the phase conductors on the direct current side of a converter installation.
GB859359A 1958-03-14 1959-03-12 Improvements in or relating to bistable flip-flop circuits and relay circuit arrangements incorporating such circuits Expired GB872433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES57355A DE1085572B (en) 1958-03-14 1958-03-14 Bistable multivibrator with transistors

Publications (1)

Publication Number Publication Date
GB872433A true GB872433A (en) 1961-07-12

Family

ID=7491756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB859359A Expired GB872433A (en) 1958-03-14 1959-03-12 Improvements in or relating to bistable flip-flop circuits and relay circuit arrangements incorporating such circuits

Country Status (3)

Country Link
DE (1) DE1085572B (en)
FR (1) FR1223420A (en)
GB (1) GB872433A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120888A (en) * 1982-05-26 1983-12-07 Ates Componenti Elettron Improvements in or relating to bistable multivibrator circuits

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL274963A (en) * 1961-02-20

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2776420A (en) * 1954-11-01 1957-01-01 Rca Corp Transistor indicator circuits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120888A (en) * 1982-05-26 1983-12-07 Ates Componenti Elettron Improvements in or relating to bistable multivibrator circuits
US4553046A (en) * 1982-05-26 1985-11-12 Sgs-Ates Componenti Elettronici Spa Monolithically integratable bistable multivibrator circuit having at least one output that can be placed in a preferential state

Also Published As

Publication number Publication date
DE1085572B (en) 1960-07-21
FR1223420A (en) 1960-06-16

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