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JPS56132588A - Crystal oscillation type electronic watch - Google Patents

Crystal oscillation type electronic watch

Info

Publication number
JPS56132588A
JPS56132588A JP3644880A JP3644880A JPS56132588A JP S56132588 A JPS56132588 A JP S56132588A JP 3644880 A JP3644880 A JP 3644880A JP 3644880 A JP3644880 A JP 3644880A JP S56132588 A JPS56132588 A JP S56132588A
Authority
JP
Japan
Prior art keywords
humidity
resistance
invertor
facilitating
amplification
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
JP3644880A
Other languages
Japanese (ja)
Inventor
Yasuhiko Nishikubo
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 JP3644880A priority Critical patent/JPS56132588A/en
Publication of JPS56132588A publication Critical patent/JPS56132588A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To improve humidity resistance of a watch circuit containing IC chips while facilitating DC measurement by constructing an input circuit of an amplification invertor at an oscillator section on the same chip with MOS capacitances and high resistances connected in parallel. CONSTITUTION:A capacitor 14 comprising a semiconductor MOS capacitance and a high resistance 15 of 100MOMEGA or more are connected in parallel between an amplification invertor comprising MOSTs 17 and 18 on oscillation input terminal 100 for DC-blocking. Therefore, though a deflection occurs in the potential direction VDD or VSS at a terminal 100 with a lower impedance down to a few MOMEGA due to humidity or the like, the resistance 15 reduces possible potential change in DC or an AC signal of a crystal oscillator 12 is transmitted to the inverter through the capacitor 14. This prevents the halting of the oscillation associated with humidity change or fixes the gate potential of a CMOST thereby facilitating DC measurement.
JP3644880A 1980-03-22 1980-03-22 Crystal oscillation type electronic watch Pending JPS56132588A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3644880A JPS56132588A (en) 1980-03-22 1980-03-22 Crystal oscillation type electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3644880A JPS56132588A (en) 1980-03-22 1980-03-22 Crystal oscillation type electronic watch

Publications (1)

Publication Number Publication Date
JPS56132588A true JPS56132588A (en) 1981-10-16

Family

ID=12470087

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3644880A Pending JPS56132588A (en) 1980-03-22 1980-03-22 Crystal oscillation type electronic watch

Country Status (1)

Country Link
JP (1) JPS56132588A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6933797B2 (en) 2002-07-10 2005-08-23 Seiko Epson Corporation Oscillation circuit, electronic apparatus, and timepiece using a potential stabilization circuit with resistive terminations
JP2006319576A (en) * 2005-05-11 2006-11-24 Interchip Kk Reverse amplifier and crystal oscillator having the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6933797B2 (en) 2002-07-10 2005-08-23 Seiko Epson Corporation Oscillation circuit, electronic apparatus, and timepiece using a potential stabilization circuit with resistive terminations
JP2006319576A (en) * 2005-05-11 2006-11-24 Interchip Kk Reverse amplifier and crystal oscillator having the same

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