JPS5536765A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5536765A
JPS5536765A JP10993078A JP10993078A JPS5536765A JP S5536765 A JPS5536765 A JP S5536765A JP 10993078 A JP10993078 A JP 10993078A JP 10993078 A JP10993078 A JP 10993078A JP S5536765 A JPS5536765 A JP S5536765A
Authority
JP
Japan
Prior art keywords
frequency
matter
oscillator
watch
oscillation
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
JP10993078A
Other languages
Japanese (ja)
Inventor
Tsuneo Yamazaki
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments and Electronics 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 Seiko Instruments and Electronics Ltd filed Critical Seiko Instruments and Electronics Ltd
Priority to JP10993078A priority Critical patent/JPS5536765A/en
Publication of JPS5536765A publication Critical patent/JPS5536765A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE: To improve the accuracy of this watch, by obtaining a stable oscillator that is not subject to the influence of disturbance by using matter, which shows atomic nucleus quadruple piece resonance (NQR), for the time standard of this electronic watch.
CONSTITUTION: The output of an oscillation circuit 1 is guided to a frequency dividing and drive circuit 2, and drives a watch display portion 5. Singals in 10W 10kHz extracted from the frequency dividing and drive circuit 2 are shaped to triangular waves by means of a triangular wave generating circuit 3, are applied to a baricap diode D2 and modulate the frequency of the oscillator 1. A lock-in amplifier 4 detects the output of the oscillator 1, decreases voltage applied to a baricap diode D1 when differential value by the frequency of oscillation amplitude is negative and increases it when the differential value is positive. Matter NQR (Paradichlorbenzene, potassium chlorate, etc.) showing atomic nucleus quadruple piece resonance is placed in a coil L, and oscillation frequency is fixed to the resonance frequency of the matter by the feedback action of the lock-in amplifier 4.
COPYRIGHT: (C)1980,JPO&Japio
JP10993078A 1978-09-07 1978-09-07 Electronic watch Pending JPS5536765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10993078A JPS5536765A (en) 1978-09-07 1978-09-07 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10993078A JPS5536765A (en) 1978-09-07 1978-09-07 Electronic watch

Publications (1)

Publication Number Publication Date
JPS5536765A true JPS5536765A (en) 1980-03-14

Family

ID=14522708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10993078A Pending JPS5536765A (en) 1978-09-07 1978-09-07 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5536765A (en)

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