FR2437731A1 - Temp. compensated crystal oscillator - accommodates spread of component characteristics and uses potentiometer to select slope - Google Patents

Temp. compensated crystal oscillator - accommodates spread of component characteristics and uses potentiometer to select slope

Info

Publication number
FR2437731A1
FR2437731A1 FR7827648A FR7827648A FR2437731A1 FR 2437731 A1 FR2437731 A1 FR 2437731A1 FR 7827648 A FR7827648 A FR 7827648A FR 7827648 A FR7827648 A FR 7827648A FR 2437731 A1 FR2437731 A1 FR 2437731A1
Authority
FR
France
Prior art keywords
temp
spread
component characteristics
crystal oscillator
varactor
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
FR7827648A
Other languages
French (fr)
Other versions
FR2437731B1 (en
Inventor
Georges Gallet
Andre Bertrand
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.)
Quartz & Electronique
Original Assignee
Quartz & Electronique
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 Quartz & Electronique filed Critical Quartz & Electronique
Priority to FR7827648A priority Critical patent/FR2437731A1/en
Publication of FR2437731A1 publication Critical patent/FR2437731A1/en
Application granted granted Critical
Publication of FR2437731B1 publication Critical patent/FR2437731B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/023—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes

Abstract

The temp. compensated crystal oscillator overcomes problems associated with the spread of component characteristics used in such circuits. The circuit lends itself to mass-prodn. and is based on the use of varactor diodes and a compensating network. The crystal element, pref. quartz (1), is connected via one varactor diode (2) across an orthodox oscillator circuit (3) which has a DC stabilised power source (6) with a thermistor based compensation network (5) operating over a given temp. range. The DC source also supplies a frequency controlled potentiometer (8) and the crystal varactor junction via a fixed resistor (7). A further varactor diode (9) is AC coupled across the first via two capacitors (9") and has a resistor network (12, 13) including a slope characteristic selecting potentiometer (14) connected across it again fed from the DC source.
FR7827648A 1978-09-27 1978-09-27 Temp. compensated crystal oscillator - accommodates spread of component characteristics and uses potentiometer to select slope Granted FR2437731A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7827648A FR2437731A1 (en) 1978-09-27 1978-09-27 Temp. compensated crystal oscillator - accommodates spread of component characteristics and uses potentiometer to select slope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7827648A FR2437731A1 (en) 1978-09-27 1978-09-27 Temp. compensated crystal oscillator - accommodates spread of component characteristics and uses potentiometer to select slope

Publications (2)

Publication Number Publication Date
FR2437731A1 true FR2437731A1 (en) 1980-04-25
FR2437731B1 FR2437731B1 (en) 1981-02-13

Family

ID=9213087

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7827648A Granted FR2437731A1 (en) 1978-09-27 1978-09-27 Temp. compensated crystal oscillator - accommodates spread of component characteristics and uses potentiometer to select slope

Country Status (1)

Country Link
FR (1) FR2437731A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283529A1 (en) * 1987-03-23 1988-09-28 BRG Mechatronikai Vállalat Circuit arrangement for the temperature compensation of AT-cut crystal oscillators, and method for the adjustment of the compensation
US5693919A (en) * 1994-11-15 1997-12-02 Inventio Ag Evacuation system for elevators
EP0939488A1 (en) * 1998-02-02 1999-09-01 Sony International (Europe) GmbH Voltage controlled tuning cicuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109586710A (en) * 2018-11-30 2019-04-05 四川九洲电器集团有限责任公司 A kind of temperature compensating crystal oscillator frequency tuning circuit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1534232A (en) * 1966-08-16 1968-07-26 Int Standard Electric Corp Temperature compensation circuit for crystal oscillators
FR1565423A (en) * 1968-01-08 1969-05-02
FR2138404A1 (en) * 1971-05-25 1973-01-05 Cepe
FR2284219A1 (en) * 1974-09-06 1976-04-02 Cepe TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR
US4104599A (en) * 1976-04-20 1978-08-01 Trio Kabushiki Kaisha Crystal oscillating circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1534232A (en) * 1966-08-16 1968-07-26 Int Standard Electric Corp Temperature compensation circuit for crystal oscillators
FR1565423A (en) * 1968-01-08 1969-05-02
FR2138404A1 (en) * 1971-05-25 1973-01-05 Cepe
FR2284219A1 (en) * 1974-09-06 1976-04-02 Cepe TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR
US4104599A (en) * 1976-04-20 1978-08-01 Trio Kabushiki Kaisha Crystal oscillating circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283529A1 (en) * 1987-03-23 1988-09-28 BRG Mechatronikai Vállalat Circuit arrangement for the temperature compensation of AT-cut crystal oscillators, and method for the adjustment of the compensation
US5693919A (en) * 1994-11-15 1997-12-02 Inventio Ag Evacuation system for elevators
EP0939488A1 (en) * 1998-02-02 1999-09-01 Sony International (Europe) GmbH Voltage controlled tuning cicuit

Also Published As

Publication number Publication date
FR2437731B1 (en) 1981-02-13

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Legal Events

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