GB1429737A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
GB1429737A
GB1429737A GB594474A GB594474A GB1429737A GB 1429737 A GB1429737 A GB 1429737A GB 594474 A GB594474 A GB 594474A GB 594474 A GB594474 A GB 594474A GB 1429737 A GB1429737 A GB 1429737A
Authority
GB
United Kingdom
Prior art keywords
coil
voltage
induced
terminals
liquid crystal
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.)
Expired
Application number
GB594474A
Other languages
English (en)
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of GB1429737A publication Critical patent/GB1429737A/en
Expired 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
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/338—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
    • H02M3/3381—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement using a single commutation path
    • 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
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Clocks (AREA)
GB594474A 1973-02-23 1974-02-08 Electronic timepiece Expired GB1429737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973023354U JPS49126068U (enrdf_load_stackoverflow) 1973-02-23 1973-02-23

Publications (1)

Publication Number Publication Date
GB1429737A true GB1429737A (en) 1976-03-24

Family

ID=12108227

Family Applications (1)

Application Number Title Priority Date Filing Date
GB594474A Expired GB1429737A (en) 1973-02-23 1974-02-08 Electronic timepiece

Country Status (3)

Country Link
US (1) US3886724A (enrdf_load_stackoverflow)
JP (1) JPS49126068U (enrdf_load_stackoverflow)
GB (1) GB1429737A (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999368A (en) * 1974-12-11 1976-12-28 Citizen Watch Co., Ltd. Circuit for an electronic timepiece
US3991416A (en) * 1975-09-18 1976-11-09 Hughes Aircraft Company AC biased and resonated liquid crystal display
JPS52128100A (en) * 1976-04-21 1977-10-27 Toshiba Corp Driver circuit
JPS5473079A (en) * 1977-11-22 1979-06-12 Copal Co Ltd Time indicator for electronic digital car clock
CH649107A5 (de) * 1980-11-07 1985-04-30 Sulzer Ag Bremsvorrichtung fuer greiferprojektil-webmaschinen.
US6941634B2 (en) * 2002-03-01 2005-09-13 Textron Inc. Method for attaching axles to a leaf springs on hydraulic disc brake vehicles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH532811A (fr) * 1970-05-11 1972-08-31 Manuf Des Montres Rolex S A Bi Pièce d'horlogerie comprenant un dispositif d'affichage avec au moins une cellule à cristal liquide
JPS4711874A (enrdf_load_stackoverflow) * 1970-11-05 1972-06-14
GB1343660A (en) * 1970-12-29 1974-01-16 Suwa Seikosha Kk Timepiece
JPS5219106B1 (enrdf_load_stackoverflow) * 1971-02-27 1977-05-26

Also Published As

Publication number Publication date
JPS49126068U (enrdf_load_stackoverflow) 1974-10-29
US3886724A (en) 1975-06-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee