JPS5746186A - Voltage control device of electronic watch - Google Patents

Voltage control device of electronic watch

Info

Publication number
JPS5746186A
JPS5746186A JP55123063A JP12306380A JPS5746186A JP S5746186 A JPS5746186 A JP S5746186A JP 55123063 A JP55123063 A JP 55123063A JP 12306380 A JP12306380 A JP 12306380A JP S5746186 A JPS5746186 A JP S5746186A
Authority
JP
Japan
Prior art keywords
circuit
voltage
oscillation
state
oscillating
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
JP55123063A
Other languages
Japanese (ja)
Inventor
Hisashi Kawahara
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 Holdings Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
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 Holdings Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Priority to JP55123063A priority Critical patent/JPS5746186A/en
Publication of JPS5746186A publication Critical patent/JPS5746186A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces

Abstract

PURPOSE:To obtain long service life of a battery, by providing oscillation and detecting circuits, switching supply voltages to circuits based on the state of the oscillating circuit, and reducing the current consumption at the time of normal operation. CONSTITUTION:The oscillating state of the oscillating circuit 2 is detected by the detecting circuit 8. In the state the oscillation is not performed, the voltage of about 3V outputted from a litium battery 1 is supplied to the oscillating circuit 2, a frequency dividing circuit 3, and a time counter 4. When the oscillation is performed, a voltage switching circuit 9 is operated by the detected output, and the voltage which is decreased to 1.5V in a voltage dropping circuit 5 is supplied to each of the circuits 2-4.
JP55123063A 1980-09-05 1980-09-05 Voltage control device of electronic watch Pending JPS5746186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55123063A JPS5746186A (en) 1980-09-05 1980-09-05 Voltage control device of electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55123063A JPS5746186A (en) 1980-09-05 1980-09-05 Voltage control device of electronic watch

Publications (1)

Publication Number Publication Date
JPS5746186A true JPS5746186A (en) 1982-03-16

Family

ID=14851272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55123063A Pending JPS5746186A (en) 1980-09-05 1980-09-05 Voltage control device of electronic watch

Country Status (1)

Country Link
JP (1) JPS5746186A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61124887A (en) * 1984-11-21 1986-06-12 Seiko Epson Corp Electronic timepiece
EP0872784A1 (en) * 1997-04-14 1998-10-21 Seiko Epson Corporation Oscillation circuit, electronic circuit using the same, and semiconductor device, electronic equipment, and timepiece using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61124887A (en) * 1984-11-21 1986-06-12 Seiko Epson Corp Electronic timepiece
EP0872784A1 (en) * 1997-04-14 1998-10-21 Seiko Epson Corporation Oscillation circuit, electronic circuit using the same, and semiconductor device, electronic equipment, and timepiece using the same
US6166609A (en) * 1997-04-14 2000-12-26 Seiko Epson Corporation Oscillator circuit supplied with optimal power voltage according to oscillator output

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