JPS5620337A - Oscillator with temperature compensation - Google Patents

Oscillator with temperature compensation

Info

Publication number
JPS5620337A
JPS5620337A JP9493679A JP9493679A JPS5620337A JP S5620337 A JPS5620337 A JP S5620337A JP 9493679 A JP9493679 A JP 9493679A JP 9493679 A JP9493679 A JP 9493679A JP S5620337 A JPS5620337 A JP S5620337A
Authority
JP
Japan
Prior art keywords
circuit
frequency
signal
circuits
temperature
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
JP9493679A
Other languages
Japanese (ja)
Other versions
JPS6234161B2 (en
Inventor
Fuminori Suzuki
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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
Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP9493679A priority Critical patent/JPS5620337A/en
Publication of JPS5620337A publication Critical patent/JPS5620337A/en
Publication of JPS6234161B2 publication Critical patent/JPS6234161B2/ja
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
    • H03L1/027—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 frequency conversion means which is variable with temperature, e.g. mixer, frequency divider, pulse add/substract logic circuit

Landscapes

  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To make the mean frequency of a clocking signal constant through simple circuit constitution without reference to temperature by using no AT crystal vibrator, etc., large in electric current consumption, by freely selecting the temperature at which frequencies of two oscillating circuits agree with each other. CONSTITUTION:The 1st and 2nd oscillating circuits 1 and 2 differing in frequency- temperature characteristic are provided; and phase difference detecting circuit 3 detects a difference frequency between oscillation frequency signals from those circuits 1 and 2 and slow-speed deciding circuit 5 decides whether which frequency is greater between both the signals from circuits 1 and 2. Outputs of those circuits 3 and 5 are applied to compensation control circuit 9, alpha timer 6 of which counts a signal from circuit 3 up to a fixed number and on the end of the count operation, beta timer 7 counts one signal that circuit 5 has decided for a certain time. Then, outputs of timers 6 and 7 and that of circuit 5 are applied to signal change-over circuit 8 receiving signals from oscillators 1 and 2 and circuit 8 selects and applies a signal, agreeing in frequency, to another compensation control circuit 9.
JP9493679A 1979-07-27 1979-07-27 Oscillator with temperature compensation Granted JPS5620337A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9493679A JPS5620337A (en) 1979-07-27 1979-07-27 Oscillator with temperature compensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9493679A JPS5620337A (en) 1979-07-27 1979-07-27 Oscillator with temperature compensation

Publications (2)

Publication Number Publication Date
JPS5620337A true JPS5620337A (en) 1981-02-25
JPS6234161B2 JPS6234161B2 (en) 1987-07-24

Family

ID=14123834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9493679A Granted JPS5620337A (en) 1979-07-27 1979-07-27 Oscillator with temperature compensation

Country Status (1)

Country Link
JP (1) JPS5620337A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014165623A (en) * 2013-02-25 2014-09-08 Nec Access Technica Ltd Frequency adjustment circuit and frequency adjustment method
US9024693B2 (en) 2013-06-06 2015-05-05 Industrial Technology Research Institute Crystal-less clock generator and operation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5164353A (en) * 1974-12-02 1976-06-03 Suwa Seikosha Kk ONDOHOSEISUISHODOKEI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5164353A (en) * 1974-12-02 1976-06-03 Suwa Seikosha Kk ONDOHOSEISUISHODOKEI

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014165623A (en) * 2013-02-25 2014-09-08 Nec Access Technica Ltd Frequency adjustment circuit and frequency adjustment method
US9024693B2 (en) 2013-06-06 2015-05-05 Industrial Technology Research Institute Crystal-less clock generator and operation method thereof

Also Published As

Publication number Publication date
JPS6234161B2 (en) 1987-07-24

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