JPS54109875A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS54109875A
JPS54109875A JP1689878A JP1689878A JPS54109875A JP S54109875 A JPS54109875 A JP S54109875A JP 1689878 A JP1689878 A JP 1689878A JP 1689878 A JP1689878 A JP 1689878A JP S54109875 A JPS54109875 A JP S54109875A
Authority
JP
Japan
Prior art keywords
voltage
reference voltage
low voltage
mos transistors
current amplifier
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.)
Granted
Application number
JP1689878A
Other languages
Japanese (ja)
Other versions
JPS6032831B2 (en
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 JP1689878A priority Critical patent/JPS6032831B2/en
Publication of JPS54109875A publication Critical patent/JPS54109875A/en
Publication of JPS6032831B2 publication Critical patent/JPS6032831B2/en
Expired 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)
  • Dc-Dc Converters (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To obtain stable low voltage and reduce the power consumption of the electronic watch by constituting a voltage converting part with a reference voltage part and a current amplifier part which is inputted with a reference voltage and supplies a constant low voltage to a load being a low voltage part. CONSTITUTION:A power supply system for an oscillation part 1, frequency division part 2, display drive device 3 and display device 4 is constituted by using the complementary MOS transistors consisting of two power source systems of a supply voltage system 7 and a low voltage system 6 which is lowered of the supply voltage by a voltage conversion part 5. The voltage conversion part 5 consists of a reference voltage part 51 and a current amplifier part 52. The reference voltage part 51 uses the sum of the threshold voltages of the P channel MOS transistors as a reference voltage. The current amplifier part 52 is inputted with the reference voltage and supplies a constant voltage to a load being the low voltage part 6 by using the lease follower type output circuit of the P channel MOS transistors to operate the circuits under the minimum voltage required for the operation.
JP1689878A 1978-02-16 1978-02-16 electronic clock Expired JPS6032831B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1689878A JPS6032831B2 (en) 1978-02-16 1978-02-16 electronic clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1689878A JPS6032831B2 (en) 1978-02-16 1978-02-16 electronic clock

Publications (2)

Publication Number Publication Date
JPS54109875A true JPS54109875A (en) 1979-08-28
JPS6032831B2 JPS6032831B2 (en) 1985-07-30

Family

ID=11928956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1689878A Expired JPS6032831B2 (en) 1978-02-16 1978-02-16 electronic clock

Country Status (1)

Country Link
JP (1) JPS6032831B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509065A1 (en) * 1981-07-03 1983-01-07 Seiko Instr & Electronics REFERENCE PULSE GENERATOR FOR AN ELECTRONIC WATCH

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509065A1 (en) * 1981-07-03 1983-01-07 Seiko Instr & Electronics REFERENCE PULSE GENERATOR FOR AN ELECTRONIC WATCH

Also Published As

Publication number Publication date
JPS6032831B2 (en) 1985-07-30

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