GB844591A - Improvements in or relating to electrical switching circuits - Google Patents

Improvements in or relating to electrical switching circuits

Info

Publication number
GB844591A
GB844591A GB1105259A GB1105259A GB844591A GB 844591 A GB844591 A GB 844591A GB 1105259 A GB1105259 A GB 1105259A GB 1105259 A GB1105259 A GB 1105259A GB 844591 A GB844591 A GB 844591A
Authority
GB
United Kingdom
Prior art keywords
transistor
collector
diode
taken
circuit
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
GB1105259A
Inventor
Kenneth Frank Bacon
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB1105259A priority Critical patent/GB844591A/en
Priority to DEN18096A priority patent/DE1112547B/en
Priority to FR822932A priority patent/FR1252493A/en
Publication of GB844591A publication Critical patent/GB844591A/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
    • 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
    • H03K3/288—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 using additional transistors in the input circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)
  • Bipolar Integrated Circuits (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

844,591. Transistor bistable circuits. MULLARD Ltd. April 1, 1959, No. 11052/59. Class 40(6). A bistable-state circuit comprises two reciprocally coupled transistors T1, T2 and a semiconductor diode D connected in its forwardlyconducting direction in the path constituted by the cross-connection from the base of one transistor T1 to the collector of the other transistor T2 together with the collector circuit of said other transistor, whereby on the gradual application of the collector biasing voltage V cc the circuit always assumes initially a state in which the other transistor T2 is conducting owing to the relatively large resistance exhibited by the diode for small values of applied voltage. Instead of being connected as shown the diode may be connected in one of the crossed base-collector couplings. Triggering may be effected by application of a pulse to cause the transistor T3 to bottom momentarily, the output being taken from transistor T4. A further output transistor T5. symmetrically arranged with respect to transistor T4, may be provided; this ensures that the two transistors are substantially equally loaded and also permits two oppositely-phased outputs to be taken.
GB1105259A 1959-04-01 1959-04-01 Improvements in or relating to electrical switching circuits Expired GB844591A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1105259A GB844591A (en) 1959-04-01 1959-04-01 Improvements in or relating to electrical switching circuits
DEN18096A DE1112547B (en) 1959-04-01 1960-03-29 A bistable circuit operated when the supply voltage increases slowly
FR822932A FR1252493A (en) 1959-04-01 1960-03-30 Switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1105259A GB844591A (en) 1959-04-01 1959-04-01 Improvements in or relating to electrical switching circuits

Publications (1)

Publication Number Publication Date
GB844591A true GB844591A (en) 1960-08-17

Family

ID=9979129

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1105259A Expired GB844591A (en) 1959-04-01 1959-04-01 Improvements in or relating to electrical switching circuits

Country Status (2)

Country Link
DE (1) DE1112547B (en)
GB (1) GB844591A (en)

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

Also Published As

Publication number Publication date
DE1112547B (en) 1961-08-10

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