GB687205A - Improvements in or relating to means for producing pulses of alternating current from direct current impulses - Google Patents

Improvements in or relating to means for producing pulses of alternating current from direct current impulses

Info

Publication number
GB687205A
GB687205A GB208950A GB208950A GB687205A GB 687205 A GB687205 A GB 687205A GB 208950 A GB208950 A GB 208950A GB 208950 A GB208950 A GB 208950A GB 687205 A GB687205 A GB 687205A
Authority
GB
United Kingdom
Prior art keywords
impulses
direct current
oscillator
crystal triode
electrodes
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
GB208950A
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.)
ANATOLE RUTENBERG
General Electric Co PLC
Original Assignee
ANATOLE RUTENBERG
General Electric Co PLC
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 ANATOLE RUTENBERG, General Electric Co PLC filed Critical ANATOLE RUTENBERG
Priority to GB208950A priority Critical patent/GB687205A/en
Publication of GB687205A publication Critical patent/GB687205A/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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

687,205. Semi-conductor circuits. GENERAL ELECTRIC CO., Ltd., and RUTENBERG, A. March 6, 1951 [Jan. 26, 1950], No. 2089/50. Classes 40 (v) and 40 (vi). Means for producing pulses of alternating current from direct current impulses comprises a crystal triode connected in an oscillator circuit, oscillations occurring only during the direct current impulses which supply the operating voltages for all the electrodes of the triode. The oscillator circuit comprises a parallel resonant circuit 8, 9 which is associated with the base, emitter and collector electrodes of a crystal triode 7 in a manner similar to that of a Hartley oscillator. The output is taken from the collector electrode via transformer 14. Direct current impulses, such as positive marking impulses and negative spacing impulses from a telegraph transmitter, are applied to terminals 1, and rectifiers 2 and 4 are provided so that positive pulses cause current to flow through resistances 5 and 6 to provide operating voltages for the electrodes of the crystal triode. Negative pulses cause current to flow through resistance 3, and if desired a second crystal triode oscillator may be associated with this part of the circuit so that marking and spacing impulses of different frequency may be produced.
GB208950A 1950-01-26 1950-01-26 Improvements in or relating to means for producing pulses of alternating current from direct current impulses Expired GB687205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB208950A GB687205A (en) 1950-01-26 1950-01-26 Improvements in or relating to means for producing pulses of alternating current from direct current impulses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB208950A GB687205A (en) 1950-01-26 1950-01-26 Improvements in or relating to means for producing pulses of alternating current from direct current impulses

Publications (1)

Publication Number Publication Date
GB687205A true GB687205A (en) 1953-02-11

Family

ID=9733388

Family Applications (1)

Application Number Title Priority Date Filing Date
GB208950A Expired GB687205A (en) 1950-01-26 1950-01-26 Improvements in or relating to means for producing pulses of alternating current from direct current impulses

Country Status (1)

Country Link
GB (1) GB687205A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937236A (en) * 1956-03-23 1960-05-17 Itt Fast-switching transistor telegraph repeater
FR2124077A1 (en) * 1971-02-03 1972-09-22 Constr Telephoniques
FR2639167A1 (en) * 1988-11-14 1990-05-18 Morey Gilles METHOD AND SYSTEM FOR TRANSMITTING A SIGNAL

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937236A (en) * 1956-03-23 1960-05-17 Itt Fast-switching transistor telegraph repeater
FR2124077A1 (en) * 1971-02-03 1972-09-22 Constr Telephoniques
FR2639167A1 (en) * 1988-11-14 1990-05-18 Morey Gilles METHOD AND SYSTEM FOR TRANSMITTING A SIGNAL
EP0370862A1 (en) * 1988-11-14 1990-05-30 Gilles Morey Method and system for signal transmission
US5351273A (en) * 1988-11-14 1994-09-27 Gilles Morey Process and system for the transmission of a signal

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