CH653519GA3 - - Google Patents

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Publication number
CH653519GA3
CH653519GA3 CH382482A CH382482A CH653519GA3 CH 653519G A3 CH653519G A3 CH 653519GA3 CH 382482 A CH382482 A CH 382482A CH 382482 A CH382482 A CH 382482A CH 653519G A3 CH653519G A3 CH 653519GA3
Authority
CH
Switzerland
Prior art keywords
boosting
piezo
driving
booster circuit
display portion
Prior art date
Application number
CH382482A
Other languages
French (fr)
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 filed Critical
Publication of CH653519GA3 publication Critical patent/CH653519GA3/fr

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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B44/00—Circuit arrangements for operating electroluminescent light sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Dc-Dc Converters (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A booster circuit in an electronic watch having: hands for indicating time or a display portion such as a panel for displaying time digitally; a lamp for lighting the display portion by electroluminescence (EL element); and a sound generating portion for generating sound at an alarm setting time by vibration of a piezo-electric element. The booster circuit has a boosting member for driving the EL element and a boosting member for driving the piezo-electric element. These boosting members commonly use one coil.
CH382482A 1981-06-22 1982-06-22 CH653519GA3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56096136A JPS57211087A (en) 1981-06-22 1981-06-22 Boosting circuit of electronic timepiece element

Publications (1)

Publication Number Publication Date
CH653519GA3 true CH653519GA3 (en) 1986-01-15

Family

ID=14156967

Family Applications (1)

Application Number Title Priority Date Filing Date
CH382482A CH653519GA3 (en) 1981-06-22 1982-06-22

Country Status (4)

Country Link
US (1) US4529322A (en)
JP (1) JPS57211087A (en)
CH (1) CH653519GA3 (en)
GB (1) GB2104255B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
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
EP0434841B1 (en) * 1989-05-26 1995-11-22 Seiko Epson Corporation Power source circuit
DE4122984C2 (en) * 1990-07-11 2003-12-24 Brother Ind Ltd Control device for a piezoelectric device and method for operating a control device for a piezoelectric device
US5313141A (en) * 1993-04-22 1994-05-17 Durel Corporation Three terminal inverter for electroluminescent lamps
JPH07153569A (en) * 1993-11-29 1995-06-16 Seiko Instr Inc Illuminated electronic equipment
DE69509997T2 (en) * 1994-02-25 1999-11-04 Citizen Watch Co., Ltd. PORTABLE DEVICE WITH SENSOR FUNCTION
US5502357A (en) * 1994-10-03 1996-03-26 Durel Corporation Low cost inverter for EL lamp
GB2300529A (en) * 1995-05-05 1996-11-06 Micro Glory International Limi Driver circuit for electroluminescent devices
US5483503A (en) * 1995-06-30 1996-01-09 Durel Corporation Split chip inverter for EL lamp
EP0762805A1 (en) * 1995-09-06 1997-03-12 Isa France S.A. Circuit and process for operating an EL element
CH689243B5 (en) * 1995-09-21 1999-07-15 Ebauchesfabrik Eta Ag sound generator, especially for a timepiece.
US6407507B1 (en) 1996-05-09 2002-06-18 Durel Corporation Personal electronic device having EL lamp and buzzer powered from a single inductor
US5982105A (en) * 1997-11-10 1999-11-09 Applied Concepts, Inc. Transformerless electroluminescent lamp driver topology
US6181589B1 (en) * 1999-07-02 2001-01-30 Durel Corporation Half-bridge inverter for coupling an EL lamp to a high voltage DC rail
JP4694681B2 (en) * 1999-11-26 2011-06-08 セイコーインスツル株式会社 Ultrasonic motor and electronic device with ultrasonic motor
US6580222B2 (en) 2001-02-20 2003-06-17 Durel Corporation Inverter for driving EL lamp and light emitting diodes
JP6308788B2 (en) * 2013-03-27 2018-04-11 セイコーインスツル株式会社 Electronic device and impact detection method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872330A (en) * 1973-10-25 1975-03-18 Rockwell International Corp High power acoustical transducer with elastic wave amplification
IT1016752B (en) * 1974-08-01 1977-06-20 Fiat Spa CIRCUIT FOR SIMULTANEOUS IMPULSIVE CONTROL AND AUTOMATIC SWITCHING FROM TRANSMISSION TO RECEIVER FOR SYSTEMS USING A MULTIPLE CT OF ULTRASOUND PIEZOELECTRIC TRANSDUCERS
JPS5744398Y2 (en) * 1977-05-26 1982-09-30
DE2941388A1 (en) * 1979-10-12 1981-04-23 Philips Patentverwaltung Gmbh, 2000 Hamburg CIRCUIT ARRANGEMENT FOR AN ELECTRONIC CLOCK WITH ALARM DEVICE
JPS5679987A (en) * 1979-12-04 1981-06-30 Citizen Watch Co Ltd Electronic timepiece with alarm function

Also Published As

Publication number Publication date
GB2104255B (en) 1984-10-24
US4529322A (en) 1985-07-16
JPS57211087A (en) 1982-12-24
GB2104255A (en) 1983-03-02

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