JPS5616891A - Quartz oscillating circuit for watch - Google Patents

Quartz oscillating circuit for watch

Info

Publication number
JPS5616891A
JPS5616891A JP9359779A JP9359779A JPS5616891A JP S5616891 A JPS5616891 A JP S5616891A JP 9359779 A JP9359779 A JP 9359779A JP 9359779 A JP9359779 A JP 9359779A JP S5616891 A JPS5616891 A JP S5616891A
Authority
JP
Japan
Prior art keywords
circuit
power source
source voltage
ambient temperature
det
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
JP9359779A
Other languages
Japanese (ja)
Inventor
Konin Munakata
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9359779A priority Critical patent/JPS5616891A/en
Publication of JPS5616891A publication Critical patent/JPS5616891A/en
Pending legal-status Critical Current

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Landscapes

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

Abstract

PURPOSE:To obtain a circuit where the oscillation frequency is stable against temperature change without increment of current consumption, by cancelling transition of the oscillation frequency dependent upon temperature change by changing the power source voltage of the quartz oscillating circuit. CONSTITUTION:At ambient temperature 20 deg.C, variable resistor Rv of circuit DET is so adjusted that only the fifth stage of shift register SR of ambient temperature detecting circuit DET may be H. Under this state, the circuit is oscillated with a proper frequency by adjusting capacity Cg of voltage feedback circuit FB. Next, since the resistance value of thermistor TH of circuit DET is lowered when the temperature is lowered under this set state, the H signal in register SR is moved to the sixth or following stages. Therefore, the power source voltage becomes high which is applied to amplifying circuit AMP by ambient temperature/power source voltage converting circuit CONV, and the oscillation frequency is transferred to a higher one. When the ambient temperature is lower than 20 deg.C, the H signal in register SR is moved to the fourth or following stages, and in this case, the power source voltage of circuit AMP becomes high also by circuit DET.
JP9359779A 1979-07-20 1979-07-20 Quartz oscillating circuit for watch Pending JPS5616891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9359779A JPS5616891A (en) 1979-07-20 1979-07-20 Quartz oscillating circuit for watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9359779A JPS5616891A (en) 1979-07-20 1979-07-20 Quartz oscillating circuit for watch

Publications (1)

Publication Number Publication Date
JPS5616891A true JPS5616891A (en) 1981-02-18

Family

ID=14086710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9359779A Pending JPS5616891A (en) 1979-07-20 1979-07-20 Quartz oscillating circuit for watch

Country Status (1)

Country Link
JP (1) JPS5616891A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57166566A (en) * 1981-04-07 1982-10-14 Anritsu Corp Tracking error compensation circuit
JPH03283904A (en) * 1990-03-30 1991-12-13 Kinseki Ltd Piezoelectric oscillator
EP0740421A2 (en) * 1995-04-27 1996-10-30 Seiko Epson Corporation Temperature-compensated piezoelectric oscillator
JP2006074288A (en) * 2004-08-31 2006-03-16 Kyocera Kinseki Corp Quartz resonator temperature compensation type oscillator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57166566A (en) * 1981-04-07 1982-10-14 Anritsu Corp Tracking error compensation circuit
JPH03283904A (en) * 1990-03-30 1991-12-13 Kinseki Ltd Piezoelectric oscillator
EP0740421A2 (en) * 1995-04-27 1996-10-30 Seiko Epson Corporation Temperature-compensated piezoelectric oscillator
EP0740421A3 (en) * 1995-04-27 1997-02-26 Seiko Epson Corp Temperature-compensated piezoelectric oscillator
US5705957A (en) * 1995-04-27 1998-01-06 Seiko Epson Corporation Temperature-compensated piezoelectric oscillator
JP2006074288A (en) * 2004-08-31 2006-03-16 Kyocera Kinseki Corp Quartz resonator temperature compensation type oscillator
JP4541805B2 (en) * 2004-08-31 2010-09-08 京セラキンセキ株式会社 Temperature compensated crystal oscillator

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