FR1285137A - Advanced pulse generator - Google Patents

Advanced pulse generator

Info

Publication number
FR1285137A
FR1285137A FR857316A FR857316A FR1285137A FR 1285137 A FR1285137 A FR 1285137A FR 857316 A FR857316 A FR 857316A FR 857316 A FR857316 A FR 857316A FR 1285137 A FR1285137 A FR 1285137A
Authority
FR
France
Prior art keywords
pulse generator
advanced pulse
advanced
generator
pulse
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
FR857316A
Other languages
French (fr)
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.)
SVENSKA RELAFABRIKEN A B N AKT
Original Assignee
SVENSKA RELAFABRIKEN A B N AKT
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 SVENSKA RELAFABRIKEN A B N AKT filed Critical SVENSKA RELAFABRIKEN A B N AKT
Priority to FR857316A priority Critical patent/FR1285137A/en
Application granted granted Critical
Publication of FR1285137A publication Critical patent/FR1285137A/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
    • H03K3/78—Generating a single train of pulses having a predetermined pattern, e.g. a predetermined number
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
FR857316A 1960-04-02 1961-03-30 Advanced pulse generator Expired FR1285137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR857316A FR1285137A (en) 1960-04-02 1961-03-30 Advanced pulse generator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE327660 1960-04-02
FR857316A FR1285137A (en) 1960-04-02 1961-03-30 Advanced pulse generator

Publications (1)

Publication Number Publication Date
FR1285137A true FR1285137A (en) 1962-02-16

Family

ID=26189914

Family Applications (1)

Application Number Title Priority Date Filing Date
FR857316A Expired FR1285137A (en) 1960-04-02 1961-03-30 Advanced pulse generator

Country Status (1)

Country Link
FR (1) FR1285137A (en)

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