JPS576384A - Power source circuit and electronic watch using this - Google Patents

Power source circuit and electronic watch using this

Info

Publication number
JPS576384A
JPS576384A JP7902680A JP7902680A JPS576384A JP S576384 A JPS576384 A JP S576384A JP 7902680 A JP7902680 A JP 7902680A JP 7902680 A JP7902680 A JP 7902680A JP S576384 A JPS576384 A JP S576384A
Authority
JP
Japan
Prior art keywords
voltage
circuit
battery
clamp
output
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
JP7902680A
Other languages
Japanese (ja)
Inventor
Nobuo Shibazaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7902680A priority Critical patent/JPS576384A/en
Priority to DE19813119274 priority patent/DE3119274A1/en
Priority to GB8117974A priority patent/GB2078021A/en
Publication of JPS576384A publication Critical patent/JPS576384A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using liquid crystals

Abstract

PURPOSE: To make voltage suited for a clock circuit and lower the power consumption of the entire part by passing the battery output through a voltage control circuit which outputs the voltage lower than the battery voltage then boosting the same to integer times.
CONSTITUTION: The output of a battery E is passed through a clamping circuit 3 constituted by an MISFET (metal insulator field effect transistor) Q14, a reference voltage generating circuit 2 and a voltage comparator 1, whereby it is lowered to the clamp output voltage V1 lower than the battery voltage VE. This voltage V1 is boosted V2, V3 to integer times in a boosting circuit 4. The clamp voltage V1 and the voltages V2, V3 boosted 2 times and 3 times from this are applied to a display driving circut 6, and the display driving outputs multiplexed by trisection levels are formed. The clamp voltage V1 is applied to a logical circuit block 5 for clock operation.
COPYRIGHT: (C)1982,JPO&Japio
JP7902680A 1980-06-13 1980-06-13 Power source circuit and electronic watch using this Pending JPS576384A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7902680A JPS576384A (en) 1980-06-13 1980-06-13 Power source circuit and electronic watch using this
DE19813119274 DE3119274A1 (en) 1980-06-13 1981-05-14 POWER SUPPLY AND ELECTRONIC WATCH WITH SUCH A POWER SUPPLY
GB8117974A GB2078021A (en) 1980-06-13 1981-06-11 Power supply circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7902680A JPS576384A (en) 1980-06-13 1980-06-13 Power source circuit and electronic watch using this

Publications (1)

Publication Number Publication Date
JPS576384A true JPS576384A (en) 1982-01-13

Family

ID=13678420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7902680A Pending JPS576384A (en) 1980-06-13 1980-06-13 Power source circuit and electronic watch using this

Country Status (3)

Country Link
JP (1) JPS576384A (en)
DE (1) DE3119274A1 (en)
GB (1) GB2078021A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995023358A1 (en) * 1994-02-25 1995-08-31 Citizen Watch Co., Ltd. Portable device with sensor function

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5761981A (en) * 1980-10-01 1982-04-14 Hitachi Ltd Electronic circuit using voltage reguction means
KR0151839B1 (en) * 1989-05-26 1998-12-15 야마무라 가쓰미 Power source circuit
US5235520A (en) * 1989-10-20 1993-08-10 Seiko Epson Corporation Integrated circuit having a function for generating a constant voltage
KR920010633A (en) * 1990-11-30 1992-06-26 김광호 Reference voltage generation circuit of semiconductor memory device
CN1075690C (en) * 1991-11-07 2001-11-28 摩托罗拉公司 Mixed signal processing system and method for powering same
US5392205A (en) * 1991-11-07 1995-02-21 Motorola, Inc. Regulated charge pump and method therefor
AT398656B (en) * 1993-07-01 1995-01-25 Uher Ag CIRCUIT ARRANGEMENT FOR CONVERTING A DC VOLTAGE TO A PARTIAL VOLTAGE
JPH07120718A (en) * 1993-08-31 1995-05-12 Sharp Corp Driving voltage generator for liquid crystal display device
KR0139664B1 (en) * 1995-04-18 1998-08-17 김광호 Dc-dc converter for liquid crystal display equipment using the thin film transistor
GB2298531A (en) * 1995-02-22 1996-09-04 Motorola Ltd Voltage follower circuit providing filtered output voltage
US5861861A (en) * 1996-06-28 1999-01-19 Microchip Technology Incorporated Microcontroller chip with integrated LCD control module and switched capacitor driver circuit
DE10162765A1 (en) 2001-12-20 2003-07-03 Koninkl Philips Electronics Nv Arrangement for controlling a display device with a voltage multiplier
CN108333915B (en) * 2018-03-30 2023-05-23 宗仁科技(平潭)有限公司 Time signal assignment circuit, down counter and countdown device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPS5515056A (en) * 1978-07-19 1980-02-01 Seiko Instr & Electronics Ltd Electronic watch

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946550A (en) * 1971-02-18 1976-03-30 Kabushiki Kaisha Suwa Seikosha Quartz crystal timepiece
DE2365581C3 (en) * 1972-09-20 1979-01-18 Citizen Watch Co., Ltd., Tokio Voltage multiplier circuit
JPS51122721A (en) * 1975-04-21 1976-10-27 Hitachi Ltd Boosting circuit
CH1057575A4 (en) * 1975-08-14 1977-03-15
DE2642451A1 (en) * 1976-09-21 1978-03-23 Kneer Franz X Sludge or refuse utilising plant - uses briquetting for material gained by aerobic biological process
JPS5363057A (en) * 1976-11-18 1978-06-06 Seiko Epson Corp Electronic wristwatch
JPS5572889A (en) * 1978-11-28 1980-06-02 Seiko Instr & Electronics Ltd Booster circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPS5515056A (en) * 1978-07-19 1980-02-01 Seiko Instr & Electronics Ltd Electronic watch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995023358A1 (en) * 1994-02-25 1995-08-31 Citizen Watch Co., Ltd. Portable device with sensor function
US6466521B1 (en) 1994-02-25 2002-10-15 Citizen Watch Co., Ltd. Sensor function-equipped portable device

Also Published As

Publication number Publication date
DE3119274A1 (en) 1982-06-09
GB2078021A (en) 1981-12-23

Similar Documents

Publication Publication Date Title
JPS576384A (en) Power source circuit and electronic watch using this
KR940010488A (en) Charge pump circuit
JPS52111648A (en) Constant voltage circuit
ATE53265T1 (en) CHARGE TRANSFER CIRCUIT ARRANGEMENT.
JPS5422557A (en) Constant current circuit
JPS5221870A (en) Circuit for detecting battery voltage
JPS5381931A (en) Integrated circuit for variable output type stabilization power source
JPS5332362A (en) Constant voltage electronic circuit
JPS524672A (en) Discharge lamp lighting apparatus
JPS5212545A (en) Mos push-pull circuit
JPS5246429A (en) Direct current high voltage power source
JPS5441444A (en) Bias supplying circuit in which spliced type field effect transistor
JPS53104838A (en) Power circuit
SU1086418A1 (en) Pulse shaper
JPS5718103A (en) Electric power source circuit for transistor amplifier
JPS5359846A (en) Constant voltage circuit
JPS5235825A (en) Boosting circuit
JPS5343860A (en) Constant voltage power source circuit
JPS56156023A (en) Complementary field effect transistor input circuit
JPS5385341A (en) Inverter control circuit
JPS5252622A (en) Fluctuating voltage negating device in gate circuit
JPS5553712A (en) Control circuit for switching power source
JPS52141162A (en) Sample hold circuit
JPS5254301A (en) Power supplying method
JPS5345569A (en) Electronic watch