JPS55163477A - Power circuit for electronic clock - Google Patents

Power circuit for electronic clock

Info

Publication number
JPS55163477A
JPS55163477A JP7123479A JP7123479A JPS55163477A JP S55163477 A JPS55163477 A JP S55163477A JP 7123479 A JP7123479 A JP 7123479A JP 7123479 A JP7123479 A JP 7123479A JP S55163477 A JPS55163477 A JP S55163477A
Authority
JP
Japan
Prior art keywords
circuit
power
battery
voltage
dividing circuit
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
JP7123479A
Other languages
Japanese (ja)
Inventor
Tadashi Hanaoka
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 JP7123479A priority Critical patent/JPS55163477A/en
Publication of JPS55163477A publication Critical patent/JPS55163477A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE: To supply a signal from an oscillation circuit to a voltage dividing circuit through which power is supplied to a clock circuit and thus to economize power by connecting power of the oscillation circuit transiently to a power battery when closing the power battery.
CONSTITUTION: From inserting a battery 8, a battery voltage is impressed on an oscillation circuit 1 and a frequency dividing circuit 2 through a starting condenser 9. Upon starting of oscillation, a time reference signal is subjected to frequency division 2 and transferred to a voltage dividing circuit 7 through a level shift circuit 3. The voltage dividing circuit 7 thus begins to operate, divides the battery voltage and supplies power to the oscillation circuit 1 and the frequency dividing circuit 2. After that, the condenser 9 operates as that of removing ripples of an output voltage of the voltage dividing circuit 7.
COPYRIGHT: (C)1980,JPO&Japio
JP7123479A 1979-06-08 1979-06-08 Power circuit for electronic clock Pending JPS55163477A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7123479A JPS55163477A (en) 1979-06-08 1979-06-08 Power circuit for electronic clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7123479A JPS55163477A (en) 1979-06-08 1979-06-08 Power circuit for electronic clock

Publications (1)

Publication Number Publication Date
JPS55163477A true JPS55163477A (en) 1980-12-19

Family

ID=13454791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7123479A Pending JPS55163477A (en) 1979-06-08 1979-06-08 Power circuit for electronic clock

Country Status (1)

Country Link
JP (1) JPS55163477A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724331A1 (en) * 1995-01-30 1996-07-31 Nec Corporation Semiconductor integrated circuit having low power consumption oscillator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5178271A (en) * 1974-12-27 1976-07-07 Citizen Watch Co Ltd
JPS5240371A (en) * 1975-09-27 1977-03-29 Citizen Watch Co Ltd Electronic watch
JPS5258958A (en) * 1975-11-11 1977-05-14 Citizen Watch Co Ltd Electronic watch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5178271A (en) * 1974-12-27 1976-07-07 Citizen Watch Co Ltd
JPS5240371A (en) * 1975-09-27 1977-03-29 Citizen Watch Co Ltd Electronic watch
JPS5258958A (en) * 1975-11-11 1977-05-14 Citizen Watch Co Ltd Electronic watch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724331A1 (en) * 1995-01-30 1996-07-31 Nec Corporation Semiconductor integrated circuit having low power consumption oscillator
US5719534A (en) * 1995-01-30 1998-02-17 Nec Corporation Semiconductor integrated circuit having low power consumption oscillator

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