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JPS54128254A - Multivibrator - Google Patents

Multivibrator

Info

Publication number
JPS54128254A
JPS54128254A JP3551978A JP3551978A JPS54128254A JP S54128254 A JPS54128254 A JP S54128254A JP 3551978 A JP3551978 A JP 3551978A JP 3551978 A JP3551978 A JP 3551978A JP S54128254 A JPS54128254 A JP S54128254A
Authority
JP
Japan
Prior art keywords
resistance
pulse duration
capacitor
featuring
turned
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.)
Pending
Application number
JP3551978A
Other languages
Japanese (ja)
Inventor
Ikuo Tsunoda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3551978A priority Critical patent/JPS54128254A/en
Publication of JPS54128254A publication Critical patent/JPS54128254A/en
Pending 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
    • H03K3/282—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 astable
    • H03K3/2823—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 astable using two active transistor of the same conductivity type
    • H03K3/2825—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 astable using two active transistor of the same conductivity type in an asymmetrical circuit configuration

Landscapes

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

Abstract

PURPOSE:To obtain the output signals featuring different pulse durations with the nonstable multivibrator by providing plural resistance elemetns featuring different resistance value to the time constant circuit and then selecting the resistance element with the pulse duration selection signal. CONSTITUTION:Resistance elements R1-Rn featuring dirrerent resistance value are connected to capacitor C via diodes Da1-Dan, and the pulse duration selection signals are applied to each connection between the resistance element and the capacitor via diodes Db1-Dbn. With application of the trigger signal to input terminal In, transistor Q1 and Q2 are turned on and off respectively. For instance, when the signal of high level is applied to terminal T1, Db1 becomes nonconductive. And the current flowing through R1 charges capacitor C. When the charging level exceed the fixed value, Q1 and Q2 are turned off and on respectively to secure the steady state. Thus, the output signals can be obtained with the pulse duration which is determined by the time constant circuit consisting of R1 and C.
JP3551978A 1978-03-29 1978-03-29 Multivibrator Pending JPS54128254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3551978A JPS54128254A (en) 1978-03-29 1978-03-29 Multivibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3551978A JPS54128254A (en) 1978-03-29 1978-03-29 Multivibrator

Publications (1)

Publication Number Publication Date
JPS54128254A true JPS54128254A (en) 1979-10-04

Family

ID=12443992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3551978A Pending JPS54128254A (en) 1978-03-29 1978-03-29 Multivibrator

Country Status (1)

Country Link
JP (1) JPS54128254A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4814140B1 (en) * 1968-07-23 1973-05-04
JPS50732A (en) * 1973-05-02 1975-01-07

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4814140B1 (en) * 1968-07-23 1973-05-04
JPS50732A (en) * 1973-05-02 1975-01-07

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