GB1080559A - Improvements in or relating to transistor oscillator circuits - Google Patents

Improvements in or relating to transistor oscillator circuits

Info

Publication number
GB1080559A
GB1080559A GB49444/64A GB4944464A GB1080559A GB 1080559 A GB1080559 A GB 1080559A GB 49444/64 A GB49444/64 A GB 49444/64A GB 4944464 A GB4944464 A GB 4944464A GB 1080559 A GB1080559 A GB 1080559A
Authority
GB
United Kingdom
Prior art keywords
transistor
circuit
relating
choke
dec
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
GB49444/64A
Inventor
Albert Henry Johnson
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.)
MINI OF TECHNOLOGY
Minister of Technology
Original Assignee
MINI OF TECHNOLOGY
Minister of Technology
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 MINI OF TECHNOLOGY, Minister of Technology filed Critical MINI OF TECHNOLOGY
Priority to GB49444/64A priority Critical patent/GB1080559A/en
Publication of GB1080559A publication Critical patent/GB1080559A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
    • H03B5/1209—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier having two current paths operating in a differential manner and a current source or degeneration circuit in common to both paths, e.g. a long-tailed pair.
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

1,080,559. Transistor oscillating circuits; frequency modulation. MINISTER OF TECHNOLOGY. Dec. 3, 1965 [Dec. 4, 1964]. No. 49444/64. Headings H3R and H3T. A transistor oscillator comprises two transistors T1, T2 with a common emitter circuit resistor R3, the base circuit of transistor T2 comprising a tuned circuit L3, C4 to which the collector of transistor T1 is back-coupled by means of choke L1 and capacitor C1. Transistor T3 forms with transistor T2 a pair in cascode amplifier connection, an output being taken from the collector circuit of transistor T3 via transformer L2. The arrangement may be frequency modulated by means of a varactor diode connected across the tuned circuit L3, C4 (Fig. 2, not shown) the modulating voltage being applied to the capacitor via a choke.
GB49444/64A 1964-12-04 1964-12-04 Improvements in or relating to transistor oscillator circuits Expired GB1080559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB49444/64A GB1080559A (en) 1964-12-04 1964-12-04 Improvements in or relating to transistor oscillator circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49444/64A GB1080559A (en) 1964-12-04 1964-12-04 Improvements in or relating to transistor oscillator circuits

Publications (1)

Publication Number Publication Date
GB1080559A true GB1080559A (en) 1967-08-23

Family

ID=10452358

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49444/64A Expired GB1080559A (en) 1964-12-04 1964-12-04 Improvements in or relating to transistor oscillator circuits

Country Status (1)

Country Link
GB (1) GB1080559A (en)

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