FR2283581A1 - Quartz controlled multi-frequency oscillator - uses multiple quartz elements switched simultaneously with capacitors - Google Patents

Quartz controlled multi-frequency oscillator - uses multiple quartz elements switched simultaneously with capacitors

Info

Publication number
FR2283581A1
FR2283581A1 FR7429727A FR7429727A FR2283581A1 FR 2283581 A1 FR2283581 A1 FR 2283581A1 FR 7429727 A FR7429727 A FR 7429727A FR 7429727 A FR7429727 A FR 7429727A FR 2283581 A1 FR2283581 A1 FR 2283581A1
Authority
FR
France
Prior art keywords
quartz
capacitors
oscillator
frequency oscillator
uses multiple
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.)
Granted
Application number
FR7429727A
Other languages
French (fr)
Other versions
FR2283581B1 (en
Inventor
Jacques Bousso
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7429727A priority Critical patent/FR2283581A1/en
Publication of FR2283581A1 publication Critical patent/FR2283581A1/en
Application granted granted Critical
Publication of FR2283581B1 publication Critical patent/FR2283581B1/fr
Granted 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
    • H03B5/366—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 and comprising means for varying the frequency by a variable voltage or current
    • H03B5/368—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 and comprising means for varying the frequency by a variable voltage or current the means being voltage variable capacitance diodes
    • 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
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/0048—Circuit elements of oscillators including measures to switch the frequency band, e.g. by harmonic selection
    • 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
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/0056—Circuit elements of oscillators including a diode used for switching
    • 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
    • H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
    • H03B2201/02—Varying the frequency of the oscillations by electronic means
    • H03B2201/025—Varying the frequency of the oscillations by electronic means the means being an electronic switch for switching in or out oscillator elements
    • H03B2201/0258—Varying the frequency of the oscillations by electronic means the means being an electronic switch for switching in or out oscillator elements the means comprising a diode

Abstract

The quartz controlled oscillator is capable of operating over a range of frequencies any one of which may be selected by the application of a voltage to a given section of the circuitry, via a single multipoint switch (T). The active element of the oscillator is a grounded base NPN transistor (Q1) feedback being obtained from a parallel RCL circuit in the collector, the inductance being tapped to the positive rail. The frequency controlling elements of the oscillator are in the emitter circuit and consist of series diodes (D1, D2, D3) and quartz crystal elements (Y1, Y2, Y3) selected by a negative voltage being applied to the diode to quartz junction. The number of such series circuits may be up to 20.
FR7429727A 1974-08-30 1974-08-30 Quartz controlled multi-frequency oscillator - uses multiple quartz elements switched simultaneously with capacitors Granted FR2283581A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7429727A FR2283581A1 (en) 1974-08-30 1974-08-30 Quartz controlled multi-frequency oscillator - uses multiple quartz elements switched simultaneously with capacitors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7429727A FR2283581A1 (en) 1974-08-30 1974-08-30 Quartz controlled multi-frequency oscillator - uses multiple quartz elements switched simultaneously with capacitors

Publications (2)

Publication Number Publication Date
FR2283581A1 true FR2283581A1 (en) 1976-03-26
FR2283581B1 FR2283581B1 (en) 1976-12-31

Family

ID=9142708

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7429727A Granted FR2283581A1 (en) 1974-08-30 1974-08-30 Quartz controlled multi-frequency oscillator - uses multiple quartz elements switched simultaneously with capacitors

Country Status (1)

Country Link
FR (1) FR2283581A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038127B (en) * 1956-09-26 1958-09-04 Siemens Ag Quartz-controlled oscillator circuit
US3243726A (en) * 1962-07-27 1966-03-29 Siemens Ag Albis Crystal oscillator having plural, selectable feedback paths and adjustable frequencydetuning means
DE1815563A1 (en) * 1968-12-19 1970-06-25 Telefunken Patent Transistor oscillator circuit with oscillating crystals located in the feedback line

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038127B (en) * 1956-09-26 1958-09-04 Siemens Ag Quartz-controlled oscillator circuit
US3243726A (en) * 1962-07-27 1966-03-29 Siemens Ag Albis Crystal oscillator having plural, selectable feedback paths and adjustable frequencydetuning means
DE1815563A1 (en) * 1968-12-19 1970-06-25 Telefunken Patent Transistor oscillator circuit with oscillating crystals located in the feedback line

Also Published As

Publication number Publication date
FR2283581B1 (en) 1976-12-31

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