GB1413154A - Adjustable-frequency pulse signal generator - Google Patents

Adjustable-frequency pulse signal generator

Info

Publication number
GB1413154A
GB1413154A GB5471972A GB5471972A GB1413154A GB 1413154 A GB1413154 A GB 1413154A GB 5471972 A GB5471972 A GB 5471972A GB 5471972 A GB5471972 A GB 5471972A GB 1413154 A GB1413154 A GB 1413154A
Authority
GB
United Kingdom
Prior art keywords
circuit
transistor
capacitor
uni
nov
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
GB5471972A
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
Compagnie Industrielle de Telecommunication CIT Alcatel SA
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 Alcatel CIT SA, Compagnie Industrielle de Telecommunication CIT Alcatel SA filed Critical Alcatel CIT SA
Publication of GB1413154A publication Critical patent/GB1413154A/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
    • H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • 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
    • H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • H03K3/351—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being unijunction transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Pulse Circuits (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

1413154 Pulse generators COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 27 Nov 1972 [26 Nov 1971] 54719/72 Heading H3T A variable frequency pulse generator comprises a two-transistor bi-stable circuit triggered at each side by a respective circuit comprising a variable time constant circuit associated with a uni-junction transistor. As shown in Fig. 3 when transistor T1 of the bi-stable circuit T1, T2 is non-conducting a capacitor C1 charges up through a resistor R.E. 1 and at the peak point of a uni-junction transistor UJ1 discharges into the bi-stable circuit to change its state. The potential at the collector of T2 rises allowing the capacitor C2 to charge through resistor R2 and produce a pulse to restore the circuit and allow capacitor C1 to recharge. The resistors of the timing circuit may be adjusted together or differentially to control the frequency and mark-space ratio of the pulses.
GB5471972A 1971-11-26 1972-11-27 Adjustable-frequency pulse signal generator Expired GB1413154A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7142492A FR2161502A5 (en) 1971-11-26 1971-11-26

Publications (1)

Publication Number Publication Date
GB1413154A true GB1413154A (en) 1975-11-05

Family

ID=9086489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5471972A Expired GB1413154A (en) 1971-11-26 1972-11-27 Adjustable-frequency pulse signal generator

Country Status (7)

Country Link
BE (1) BE791292A (en)
CH (1) CH565482A5 (en)
DE (1) DE2257260A1 (en)
FR (1) FR2161502A5 (en)
GB (1) GB1413154A (en)
IT (1) IT971219B (en)
NL (1) NL7216041A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483098A1 (en) * 1980-05-22 1981-11-27 Dill Etienne ELECTRONIC METRONOME

Also Published As

Publication number Publication date
FR2161502A5 (en) 1973-07-06
DE2257260A1 (en) 1973-05-30
IT971219B (en) 1974-04-30
BE791292A (en) 1973-05-14
NL7216041A (en) 1973-05-29
CH565482A5 (en) 1975-08-15

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Legal Events

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