GB771067A - Transistor oscillators - Google Patents

Transistor oscillators

Info

Publication number
GB771067A
GB771067A GB2215454A GB2215454A GB771067A GB 771067 A GB771067 A GB 771067A GB 2215454 A GB2215454 A GB 2215454A GB 2215454 A GB2215454 A GB 2215454A GB 771067 A GB771067 A GB 771067A
Authority
GB
United Kingdom
Prior art keywords
transistor
crystal
july
transistors
impedance
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
GB2215454A
Inventor
Guy Lloyd Fougere
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB2215454A priority Critical patent/GB771067A/en
Publication of GB771067A publication Critical patent/GB771067A/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
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

771,067. Transistor oscillator circuits. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 19, 1955 [July 29, 1955], No. 22154/54. Class 40(6) An oscillator circuit comprises a grounded base transistor T1, the output of which is connected to the base of a grounded collector transistor T2, a piezo electric crystal X being connected in a positive feedback path between the emitter electrodes of the transistors to cause the circuit to oscillate at the series resonant frequency of the crystal. The transistors may be of the point contact or PNP or NPN junction type, the second transistor preferably having a gain of unity and being arranged to have its output impedance equal to the sum of the crystal impedance and the input impedance of the first transistor.
GB2215454A 1955-07-29 1955-07-29 Transistor oscillators Expired GB771067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2215454A GB771067A (en) 1955-07-29 1955-07-29 Transistor oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2215454A GB771067A (en) 1955-07-29 1955-07-29 Transistor oscillators

Publications (1)

Publication Number Publication Date
GB771067A true GB771067A (en) 1957-03-27

Family

ID=10174796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2215454A Expired GB771067A (en) 1955-07-29 1955-07-29 Transistor oscillators

Country Status (1)

Country Link
GB (1) GB771067A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946018A (en) * 1958-09-24 1960-07-19 Gen Precision Inc Crystal-controlled transistor oscillator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946018A (en) * 1958-09-24 1960-07-19 Gen Precision Inc Crystal-controlled transistor oscillator

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