JPS5668002A - Quartz oscillator of temperature compensation type - Google Patents

Quartz oscillator of temperature compensation type

Info

Publication number
JPS5668002A
JPS5668002A JP14364379A JP14364379A JPS5668002A JP S5668002 A JPS5668002 A JP S5668002A JP 14364379 A JP14364379 A JP 14364379A JP 14364379 A JP14364379 A JP 14364379A JP S5668002 A JPS5668002 A JP S5668002A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
temperature
range
temperature range
quartz oscillator
thermistor
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.)
Pending
Application number
JP14364379A
Other versions
JPS641969B2 (en )
Inventor
Takeshi Oshima
Original Assignee
Toyo Commun Equip 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

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/028Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only of generators comprising piezo-electric resonators

Abstract

PURPOSE:To improve frequency-temperature characteristics over a wide temperature range by connecting two independent compensating circuits in series and direct to an AT-plate quartz oscillator and by dividing the compensation range into two parts above and below the normal temperature. CONSTITUTION:Thermistor RP(T) and capacitor CP are connected in parallel to constitute a compensating circuit unit and two compensating circuit units are connected in series and direct across AT-plate quartz oscillator Y. In this constitution, one circuit unit covers the compensation range above the normal temperature, and the other below it. Namely, the ratio between the reactance of the capacitor constituting the compensating circuit and the resistance value of the thermistor is set to >=6 for the low-temperature range and to <=0.1 for the high-temperature range. The resistance used for compensation sensitivity adjustment is connected to the thermistor in parallel for the low-temperature range and in series for the high-temperature range. Thus, frequency-temperature characteristics are improved over a wide range of -30-+80 deg.C.
JP14364379A 1979-11-06 1979-11-06 Expired JPS641969B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14364379A JPS641969B2 (en) 1979-11-06 1979-11-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14364379A JPS641969B2 (en) 1979-11-06 1979-11-06

Publications (2)

Publication Number Publication Date
JPS5668002A true true JPS5668002A (en) 1981-06-08
JPS641969B2 JPS641969B2 (en) 1989-01-13

Family

ID=15343544

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14364379A Expired JPS641969B2 (en) 1979-11-06 1979-11-06

Country Status (1)

Country Link
JP (1) JPS641969B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6181208U (en) * 1984-10-30 1986-05-29
JPS635714U (en) * 1986-06-26 1988-01-14
JPS6367836U (en) * 1986-10-17 1988-05-07
JPS63156110U (en) * 1987-03-31 1988-10-13
JPS63156109U (en) * 1987-03-31 1988-10-13
JPS6457805A (en) * 1987-08-19 1989-03-06 Nihon Dempa Kogyo Co Piezoelectric oscillator and its manufacture
US5473289A (en) * 1993-01-25 1995-12-05 Matsushita Electric Industrial Co., Ltd. Temperature compensated crystal oscillator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6181208U (en) * 1984-10-30 1986-05-29
JPS635714U (en) * 1986-06-26 1988-01-14
JPH0416490Y2 (en) * 1986-06-26 1992-04-14
JPS6367836U (en) * 1986-10-17 1988-05-07
JPS63156110U (en) * 1987-03-31 1988-10-13
JPS63156109U (en) * 1987-03-31 1988-10-13
JPH0441606Y2 (en) * 1987-03-31 1992-09-30
JPH0441605Y2 (en) * 1987-03-31 1992-09-30
JPS6457805A (en) * 1987-08-19 1989-03-06 Nihon Dempa Kogyo Co Piezoelectric oscillator and its manufacture
JPH077888B2 (en) * 1987-08-19 1995-01-30 日本電波工業株式会社 Piezoelectric oscillator and a method of manufacturing the same
US5473289A (en) * 1993-01-25 1995-12-05 Matsushita Electric Industrial Co., Ltd. Temperature compensated crystal oscillator

Also Published As

Publication number Publication date Type
JPS641969B2 (en) 1989-01-13 grant

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