GB1172732A - Monostable Circuits - Google Patents

Monostable Circuits

Info

Publication number
GB1172732A
GB1172732A GB698167A GB698167A GB1172732A GB 1172732 A GB1172732 A GB 1172732A GB 698167 A GB698167 A GB 698167A GB 698167 A GB698167 A GB 698167A GB 1172732 A GB1172732 A GB 1172732A
Authority
GB
United Kingdom
Prior art keywords
voltage
capacitor
charges
feedback
voltage levels
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
GB698167A
Inventor
W Luetze
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1172732A publication Critical patent/GB1172732A/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
    • 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
    • H03K3/284—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 monostable

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)

Abstract

1,172,732. Monostable circuits. INTERNATIONAL BUSINESS MACHINES CORP. 14 Feb., 1967 [10 March, 1966], No. 6981/67. Heading H3T. A monostable circuit comprises two amplifiers in feedback configuration and a timing capacitor which charges exponentially from a first voltage level towards a second level, the two voltage levels being derived from the same voltage source and being symmetrical about an intermediate voltage level determined by a current transfer long tail pair switch. As shown, a negative pulse at E to a diode OR circuit D1, D2 cuts off a saturated transistor T 1 and switches on T 3 . This, through C 1 , switches off a lightly conducting transistor T 4 of a current switching comparator T 4 , T 5 causing T 6 to conduct and saturate T 7 . The output of T 7 is fed back to the OR gate to maintain this state while C 1 charges through R 5 and Rc. When the base potential of T 4 reaches earth the transfer switch T 4 and T 5 restores, T 4 thus conducts cutting off T 7 and removing the feedback to the OR gate so that the circuit returns to its initial state. D 4 now conducts and maintains the voltage at the base of T 4 close to earth due to feedback from T 6 . During the unstable state the capacitor charges towards the same voltage as is provided the capacitor charge and as the termination of the unstable period occurs midway between the voltage levels the timing is less dependent upon the voltage levels. A capacitor C 2 maintains the charging voltage constant during the unstable period.
GB698167A 1966-03-10 1967-02-14 Monostable Circuits Expired GB1172732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1966J0030282 DE1258458B (en) 1966-03-10 1966-03-10 Monostable or astable multivibrator circuit with stabilized duration of the quasi-stable state

Publications (1)

Publication Number Publication Date
GB1172732A true GB1172732A (en) 1969-12-03

Family

ID=7203839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB698167A Expired GB1172732A (en) 1966-03-10 1967-02-14 Monostable Circuits

Country Status (8)

Country Link
JP (1) JPS4945616B1 (en)
BE (1) BE693695A (en)
CH (1) CH454220A (en)
DE (1) DE1258458B (en)
FR (1) FR1512095A (en)
GB (1) GB1172732A (en)
NL (1) NL155145B (en)
SE (1) SE308330B (en)

Also Published As

Publication number Publication date
BE693695A (en) 1967-07-17
NL155145B (en) 1977-11-15
DE1258458B (en) 1968-01-11
NL6703653A (en) 1967-09-11
FR1512095A (en) 1968-02-02
SE308330B (en) 1969-02-10
JPS4945616B1 (en) 1974-12-05
CH454220A (en) 1968-04-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee