GB761802A - Improvements in or relating to electric oscillator circuits employing transistors - Google Patents

Improvements in or relating to electric oscillator circuits employing transistors

Info

Publication number
GB761802A
GB761802A GB9900/54A GB990054A GB761802A GB 761802 A GB761802 A GB 761802A GB 9900/54 A GB9900/54 A GB 9900/54A GB 990054 A GB990054 A GB 990054A GB 761802 A GB761802 A GB 761802A
Authority
GB
United Kingdom
Prior art keywords
circuit
capacitor
relating
oscillator circuits
circuits employing
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
GB9900/54A
Inventor
Eric Wolfendale
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co Ltd
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
Priority to NL196141D priority Critical patent/NL196141A/xx
Application filed by Mullard Radio Valve Co Ltd filed Critical Mullard Radio Valve Co Ltd
Priority to GB9900/54A priority patent/GB761802A/en
Publication of GB761802A publication Critical patent/GB761802A/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
    • H03B5/1203—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
    • H03B5/1237—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
    • 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
    • H03B5/1296—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 feedback circuit comprising a transformer

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

761,802. Transistor generating circuits. MULLARD RADIO VALVE CO., Ltd. Feb. 7. 1955 [April 5, 1954], No. 9900/54. Class 40(6) In a sine wave oscillator, a series circuit Lc, Cc, Fig. 1, is connected in the collector circuit of a transistor T having a less than unity while feedback is applied to the base. The feedback may be over a coupling coil Lb and capacitor Cb, the latter being adjustea so that the circuit Lb, Cb resonates. In a modification, Fig. 2, the capacitor Cb is connected to the join of elements Cc, Lc. The circuit may be regarded as a filter feeding back to the base, Fig. 4 (not shown). Small variations of frequency may be obtained by varying capacitor Cc and larger variations by varying both capacitors Cb, Cc.
GB9900/54A 1954-04-05 1954-04-05 Improvements in or relating to electric oscillator circuits employing transistors Expired GB761802A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL196141D NL196141A (en) 1954-04-05
GB9900/54A GB761802A (en) 1954-04-05 1954-04-05 Improvements in or relating to electric oscillator circuits employing transistors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9900/54A GB761802A (en) 1954-04-05 1954-04-05 Improvements in or relating to electric oscillator circuits employing transistors

Publications (1)

Publication Number Publication Date
GB761802A true GB761802A (en) 1956-11-21

Family

ID=9880872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9900/54A Expired GB761802A (en) 1954-04-05 1954-04-05 Improvements in or relating to electric oscillator circuits employing transistors

Country Status (2)

Country Link
GB (1) GB761802A (en)
NL (1) NL196141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105305962A (en) * 2015-11-02 2016-02-03 苏州经贸职业技术学院 Simple oscillator circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105305962A (en) * 2015-11-02 2016-02-03 苏州经贸职业技术学院 Simple oscillator circuit

Also Published As

Publication number Publication date
NL196141A (en)

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