JPS5769278A - Quartz oscillation type electronic watch - Google Patents

Quartz oscillation type electronic watch

Info

Publication number
JPS5769278A
JPS5769278A JP55146696A JP14669680A JPS5769278A JP S5769278 A JPS5769278 A JP S5769278A JP 55146696 A JP55146696 A JP 55146696A JP 14669680 A JP14669680 A JP 14669680A JP S5769278 A JPS5769278 A JP S5769278A
Authority
JP
Japan
Prior art keywords
resistance
type electronic
electronic watch
oscillation type
watch
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
JP55146696A
Other languages
Japanese (ja)
Inventor
Yasuhiko Nishikubo
Akiyoshi Kobayashi
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
Rhythm Watch Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
Rhythm Watch 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, Rhythm Watch Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Priority to JP55146696A priority Critical patent/JPS5769278A/en
Publication of JPS5769278A publication Critical patent/JPS5769278A/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
    • G04G19/02—Conversion or regulation of current or voltage
    • G04G19/06—Regulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE:To obtain a constant voltage best suited to specifications of a watch by varying the magnitude of the reference resistance of a current mirror type reference voltage generator with a MOS transistor connected thereto. CONSTITUTION:When signals are inputted from external input terminals 5a-5c to select proper resistance value, one of MOS transistors N51-N58 is turned on with a decoder 501 to select one of 8 kinds of resistance values. The reference voltage of a current mirror type reference voltage generator is set with this resistance as the reference resistance thereby making the voltage of a constant voltage circuit best suited to a watch.
JP55146696A 1980-10-20 1980-10-20 Quartz oscillation type electronic watch Pending JPS5769278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55146696A JPS5769278A (en) 1980-10-20 1980-10-20 Quartz oscillation type electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55146696A JPS5769278A (en) 1980-10-20 1980-10-20 Quartz oscillation type electronic watch

Publications (1)

Publication Number Publication Date
JPS5769278A true JPS5769278A (en) 1982-04-27

Family

ID=15413484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55146696A Pending JPS5769278A (en) 1980-10-20 1980-10-20 Quartz oscillation type electronic watch

Country Status (1)

Country Link
JP (1) JPS5769278A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58210588A (en) * 1982-06-01 1983-12-07 Seiko Instr & Electronics Ltd Electronic timepiece capable of trimming

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58210588A (en) * 1982-06-01 1983-12-07 Seiko Instr & Electronics Ltd Electronic timepiece capable of trimming
JPH0318157B2 (en) * 1982-06-01 1991-03-11 Seiko Instr & Electronics

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