GB793754A - Stable transistor oscillator - Google Patents

Stable transistor oscillator

Info

Publication number
GB793754A
GB793754A GB17801/56A GB1780156A GB793754A GB 793754 A GB793754 A GB 793754A GB 17801/56 A GB17801/56 A GB 17801/56A GB 1780156 A GB1780156 A GB 1780156A GB 793754 A GB793754 A GB 793754A
Authority
GB
United Kingdom
Prior art keywords
transistor
feedback path
emitter
oscillator
june
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
GB17801/56A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB793754A publication Critical patent/GB793754A/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
    • H03B5/1203—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 being a single transistor
    • 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

Landscapes

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

Abstract

793,754. Transistor oscillator circuits. STANDARD TELEPHONES & CABLES, Ltd. June 8, 1956 [June 13, 1955], No. 17801/56. Class 40 (6). A transistor oscillator circuit comprises a Zenner diode for stabilizing at least one of the bias potentials applied to the transistor. As shown, the oscillator comprises a transistor having its collector C earthed, a parallel resonant circuit between its base B and earth and a regenerative feedback path between the emitter E and a tap on the inductor of the tuned circuit. The feedback path includes a resistor 308 of such value that only just sufficient regeneration is applied. The base bias and emitter supply are obtained from a source stabilized by a Zenner diode and amplitude limiting is effected by emitter cut-off taking place during the negative peaks. The base bias may alternatively be obtained from a separate battery and a capacitor may be connected in the feedback path (Fig. 1, not shown).
GB17801/56A 1955-06-13 1956-06-08 Stable transistor oscillator Expired GB793754A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US793754XA 1955-06-13 1955-06-13

Publications (1)

Publication Number Publication Date
GB793754A true GB793754A (en) 1958-04-23

Family

ID=22150145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17801/56A Expired GB793754A (en) 1955-06-13 1956-06-08 Stable transistor oscillator

Country Status (2)

Country Link
FR (1) FR71336E (en)
GB (1) GB793754A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957979A (en) * 1958-02-20 1960-10-25 Avco Mfg Corp Transistorized stable oscillator-mixer system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957979A (en) * 1958-02-20 1960-10-25 Avco Mfg Corp Transistorized stable oscillator-mixer system

Also Published As

Publication number Publication date
FR71336E (en) 1959-12-22

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