CH651441GA3 - - Google Patents
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- Publication number
- CH651441GA3 CH651441GA3 CH569881A CH569881A CH651441GA3 CH 651441G A3 CH651441G A3 CH 651441GA3 CH 569881 A CH569881 A CH 569881A CH 569881 A CH569881 A CH 569881A CH 651441G A3 CH651441G A3 CH 651441GA3
- Authority
- CH
- Switzerland
- Prior art keywords
- circuit
- step down
- current
- battery
- voltage
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C10/00—Arrangements of electric power supplies in time pieces
-
- 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
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Logic Circuits (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Eletrric Generators (AREA)
- Electromechanical Clocks (AREA)
- Electric Clocks (AREA)
- Direct Current Feeding And Distribution (AREA)
- Dc-Dc Converters (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Electrical Variables (AREA)
- Electronic Switches (AREA)
Abstract
According to the present invention, the voltage of a battery is supplied to an electronic circuit such as a watch circuit through a step down circuit which is constructed of capacitors and switching MIDFETs. The step down circuit performs a current converting operation as well as a voltage converting operation. The operating current of the electronic circuit is reduced by the reduction in the operating voltage of the same. As a result that the operating current level of the electronic circuit is dropped and that the current conversion is performed by the step down circuit, the battery current is relatively largely dropped. The construction thus far described elongates the lifetime of the battery. According to the present invention, therefore, there is provided a circuit which is proper for driving the step down circuit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55135872A JPS5761981A (en) | 1980-10-01 | 1980-10-01 | Electronic circuit using voltage reguction means |
Publications (1)
Publication Number | Publication Date |
---|---|
CH651441GA3 true CH651441GA3 (en) | 1985-09-30 |
Family
ID=15161737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH569881A CH651441GA3 (en) | 1980-10-01 | 1981-09-04 |
Country Status (9)
Country | Link |
---|---|
US (1) | US4428040A (en) |
JP (1) | JPS5761981A (en) |
KR (1) | KR850000814B1 (en) |
CH (1) | CH651441GA3 (en) |
DE (1) | DE3134540A1 (en) |
GB (3) | GB2086156B (en) |
HK (3) | HK43486A (en) |
IN (1) | IN154218B (en) |
MY (1) | MY8600578A (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4634953A (en) * | 1984-04-27 | 1987-01-06 | Casio Computer Co., Ltd. | Electronic equipment with solar cell |
JPS60249821A (en) * | 1984-05-23 | 1985-12-10 | セイコーインスツルメンツ株式会社 | Charging/discharging circuit |
US4672303A (en) * | 1986-08-28 | 1987-06-09 | International Business Machines Corporation | Inductor current control circuit |
US4730122A (en) * | 1986-09-18 | 1988-03-08 | International Business Machines Corporation | Power supply adapter systems |
US4868908A (en) * | 1988-10-18 | 1989-09-19 | Ventritex | Power supply down-conversion, regulation and low battery detection system |
JP2633984B2 (en) * | 1990-10-12 | 1997-07-23 | 株式会社三協精機製作所 | Drive circuit for brushless motor |
KR920010633A (en) * | 1990-11-30 | 1992-06-26 | 김광호 | Reference voltage generation circuit of semiconductor memory device |
EP0853265B1 (en) * | 1997-01-09 | 2002-04-24 | Asulab S.A. | Electronic apparatus functioning with the aid of a photovoltaic cell, in particular timepiece |
CH691010A5 (en) * | 1997-01-09 | 2001-03-30 | Asulab Sa | electrical apparatus operating with a photovoltaic source, such timepiece. |
WO1998035433A1 (en) * | 1997-02-11 | 1998-08-13 | The Foxboro Company | Current converter and system |
JP3678075B2 (en) * | 1998-12-09 | 2005-08-03 | セイコーエプソン株式会社 | Power supply device and control method thereof, portable electronic device, timing device and control method thereof |
JP4755763B2 (en) * | 1999-04-28 | 2011-08-24 | シチズンホールディングス株式会社 | Electronic clock |
ATE277492T1 (en) * | 2000-01-07 | 2004-10-15 | Widex As | DIGITAL HEARING AID WITH VOLTAGE CONVERTER |
EP1213627B1 (en) * | 2000-06-21 | 2010-12-22 | Citizen Holdings Co., Ltd. | Power generating type electronic clock and method for controlling the same |
AU2003903787A0 (en) | 2003-07-22 | 2003-08-07 | Sergio Adolfo Maiocchi | A system for operating a dc motor |
TW595087B (en) * | 2003-09-12 | 2004-06-21 | Holtek Semiconductor Inc | Circuit framework capable of providing stable clock |
EP1528457B1 (en) * | 2003-10-31 | 2009-10-21 | Asulab S.A. | Adaptive timeout system for a portable, battery powered electronic device |
EP1720237A1 (en) * | 2005-05-04 | 2006-11-08 | Harman Becker Automotive Systems GmbH | Circuit and method for reducing a supply voltage |
CN101609349B (en) * | 2008-06-20 | 2011-05-11 | 瑞昱半导体股份有限公司 | Clock generator |
WO2010023595A1 (en) * | 2008-08-29 | 2010-03-04 | Nxp B.V. | Voltage converter |
KR101816978B1 (en) * | 2012-11-19 | 2018-01-09 | 비와이디 컴퍼니 리미티드 | Protective device and protective system for battery assembly |
US9347998B2 (en) * | 2013-04-17 | 2016-05-24 | Allegro Microsystems, Llc | System and method for measuring battery voltage |
JP6385176B2 (en) * | 2014-07-16 | 2018-09-05 | エイブリック株式会社 | Analog electronic clock |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4064468A (en) * | 1975-08-29 | 1977-12-20 | Sharp Kabushiki Kaisha | Low voltage compensator for power supply in a complementary MOS transistor crystal oscillator circuit |
JPS53115269A (en) * | 1977-03-17 | 1978-10-07 | Seiko Epson Corp | Electronic watch |
CH608327GA3 (en) * | 1976-01-19 | 1979-01-15 | ||
GB2001459A (en) * | 1977-07-01 | 1979-01-31 | Citizen Watch Co Ltd | Electronic timepiece |
US4205518A (en) * | 1975-09-27 | 1980-06-03 | Citizen Watch Co., Ltd. | Voltage conversion system for electronic timepiece |
GB2050097A (en) * | 1979-04-10 | 1980-12-31 | Citizen Watch Co Ltd | Voltage control circuit |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH613341B (en) * | 1972-09-20 | Citizen Watch Co Ltd | ELECTRONIC, TIME HOLDING DEVICE, IN PARTICULAR WRISTWATCH. | |
US3879648A (en) * | 1973-12-17 | 1975-04-22 | Ibm | Capacitive based voltage reducer and regulator |
CH593510B5 (en) * | 1975-08-14 | 1977-12-15 | Ebauches Sa | |
IT1073440B (en) * | 1975-09-22 | 1985-04-17 | Seiko Instr & Electronics | VOLTAGE LIFT CIRCUIT MADE IN MOS-FET |
JPS5240371A (en) * | 1975-09-27 | 1977-03-29 | Citizen Watch Co Ltd | Electronic watch |
GB1567475A (en) * | 1975-09-27 | 1980-05-14 | Citizen Watch Co Ltd | Telectronic timepiece |
JPS52128100A (en) * | 1976-04-21 | 1977-10-27 | Toshiba Corp | Driver circuit |
CH621917B (en) * | 1977-06-27 | Centre Electron Horloger | INTEGRATED CONTROL DEVICE. | |
JPS5557890A (en) * | 1978-06-05 | 1980-04-30 | Sanyo Electric Co | Voltage step down circuit |
US4328572A (en) * | 1979-08-14 | 1982-05-04 | Citizen Watch Company Limited | Voltage control system for electronic timepiece |
JPS5658746A (en) * | 1979-10-19 | 1981-05-21 | Casio Computer Co Ltd | Power source supply system |
DE2950948C2 (en) * | 1979-12-18 | 1982-06-09 | Casio Computer Co., Ltd., Tokyo | Power supply device for an electronic device |
GB2077004B (en) * | 1980-05-22 | 1983-10-26 | Suwa Seikosha Kk | Improvements in or relating to electronic timepieces |
JPS576384A (en) * | 1980-06-13 | 1982-01-13 | Hitachi Ltd | Power source circuit and electronic watch using this |
JPS5731333A (en) * | 1980-07-31 | 1982-02-19 | Suwa Seikosha Kk | Power source circuit system |
-
1980
- 1980-10-01 JP JP55135872A patent/JPS5761981A/en active Pending
-
1981
- 1981-07-30 IN IN859/CAL/81A patent/IN154218B/en unknown
- 1981-08-03 KR KR1019810002805A patent/KR850000814B1/en not_active IP Right Cessation
- 1981-08-13 US US06/292,584 patent/US4428040A/en not_active Expired - Lifetime
- 1981-09-01 DE DE3134540A patent/DE3134540A1/en not_active Ceased
- 1981-09-04 CH CH569881A patent/CH651441GA3/de unknown
- 1981-09-29 GB GB8129362A patent/GB2086156B/en not_active Expired
-
1983
- 1983-10-12 GB GB08327324A patent/GB2142489B/en not_active Expired
- 1983-10-12 GB GB08327326A patent/GB2142490B/en not_active Expired
-
1986
- 1986-06-09 HK HK434/86A patent/HK43486A/en unknown
- 1986-06-19 HK HK468/86A patent/HK46886A/en unknown
- 1986-09-18 HK HK706/86A patent/HK70686A/en unknown
- 1986-12-30 MY MY578/86A patent/MY8600578A/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4064468A (en) * | 1975-08-29 | 1977-12-20 | Sharp Kabushiki Kaisha | Low voltage compensator for power supply in a complementary MOS transistor crystal oscillator circuit |
US4205518A (en) * | 1975-09-27 | 1980-06-03 | Citizen Watch Co., Ltd. | Voltage conversion system for electronic timepiece |
CH608327GA3 (en) * | 1976-01-19 | 1979-01-15 | ||
JPS53115269A (en) * | 1977-03-17 | 1978-10-07 | Seiko Epson Corp | Electronic watch |
GB2001459A (en) * | 1977-07-01 | 1979-01-31 | Citizen Watch Co Ltd | Electronic timepiece |
GB2050097A (en) * | 1979-04-10 | 1980-12-31 | Citizen Watch Co Ltd | Voltage control circuit |
Non-Patent Citations (1)
Title |
---|
PATENTS ABSTRACTS OF JAPAN, vol. 2, no. 147, Seite 9346 E 78 & JP - A - 53 115 269 (7-10-1978) * |
Also Published As
Publication number | Publication date |
---|---|
KR850000814B1 (en) | 1985-06-14 |
GB2142489A (en) | 1985-01-16 |
GB2142489B (en) | 1985-07-24 |
US4428040A (en) | 1984-01-24 |
KR830006722A (en) | 1983-10-06 |
HK46886A (en) | 1986-06-27 |
MY8600578A (en) | 1986-12-31 |
HK70686A (en) | 1986-09-26 |
GB8327324D0 (en) | 1983-11-16 |
HK43486A (en) | 1986-06-20 |
IN154218B (en) | 1984-10-06 |
GB2142490A (en) | 1985-01-16 |
DE3134540A1 (en) | 1982-05-13 |
GB2086156B (en) | 1985-02-20 |
GB8327326D0 (en) | 1983-11-16 |
GB2086156A (en) | 1982-05-06 |
GB2142490B (en) | 1985-07-24 |
JPS5761981A (en) | 1982-04-14 |
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