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GB815911A - Improvements in or relating to oscillator circuits incorporating junction transistors - Google Patents

Improvements in or relating to oscillator circuits incorporating junction transistors

Info

Publication number
GB815911A
GB815911A GB366456A GB366456A GB815911A GB 815911 A GB815911 A GB 815911A GB 366456 A GB366456 A GB 366456A GB 366456 A GB366456 A GB 366456A GB 815911 A GB815911 A GB 815911A
Authority
GB
United Kingdom
Prior art keywords
frequency
relating
collector
junction transistors
oscillator circuits
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
GB366456A
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.)
ALAN SEYMOUR ROBINSON
General Electric Company PLC
Original Assignee
ALAN SEYMOUR ROBINSON
General Electric Company PLC
Filing date
Publication date
Application filed by ALAN SEYMOUR ROBINSON, General Electric Company PLC filed Critical ALAN SEYMOUR ROBINSON
Publication of GB815911A publication Critical patent/GB815911A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

815,911. Frequency modulation; frequency shift radio signalling. GENERAL ELECTRIC CO. Ltd., and ROBINSON, A. S. Dec. 12, 1956 [Feb. 6, 1956], No. 3664/56. Class 40 (5). In a back-coupled junction transistor oscillator employing a circuit 2 whose resonant frequency is dependent on the value of the collector electrode capacitance, the mean voltage between the base and collector electrodes can be varied by a modulating signal. In the embodiment shown, variation of the mean voltage between the base and collector electrodes of transistor 1 by a modulating signal, e.g. in frequency shift telegraphy, results in a known inverse variation of the collector capacitance and hence of the frequency of oscillation of the circuit.
GB366456A 1956-02-06 Improvements in or relating to oscillator circuits incorporating junction transistors Expired GB815911A (en)

Publications (1)

Publication Number Publication Date
GB815911A true GB815911A (en) 1959-07-01

Family

ID=1627756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB366456A Expired GB815911A (en) 1956-02-06 Improvements in or relating to oscillator circuits incorporating junction transistors

Country Status (1)

Country Link
GB (1) GB815911A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108234A (en) * 1961-01-26 1963-10-22 Gen Precision Inc Modulated oscillator
US3457465A (en) * 1965-08-20 1969-07-22 Henri G Juranville Oscillator detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108234A (en) * 1961-01-26 1963-10-22 Gen Precision Inc Modulated oscillator
US3457465A (en) * 1965-08-20 1969-07-22 Henri G Juranville Oscillator detector

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