JPS5776471A - Electronic watch with speaker - Google Patents

Electronic watch with speaker

Info

Publication number
JPS5776471A
JPS5776471A JP55152529A JP15252980A JPS5776471A JP S5776471 A JPS5776471 A JP S5776471A JP 55152529 A JP55152529 A JP 55152529A JP 15252980 A JP15252980 A JP 15252980A JP S5776471 A JPS5776471 A JP S5776471A
Authority
JP
Japan
Prior art keywords
pulses
speaker
piezoelectric speaker
voltage
electronic watch
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
JP55152529A
Other languages
Japanese (ja)
Inventor
Seiki Miyahara
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 Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP55152529A priority Critical patent/JPS5776471A/en
Publication of JPS5776471A publication Critical patent/JPS5776471A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/021—Details

Abstract

PURPOSE:To drive a piezoelectric speaker at the voltage twice the source voltage by applying driving waves deviated of phases by 180 deg. to the piezoelectric speaker. CONSTITUTION:Pulses 7 are inputted to an output inverter 11, and pulses deviated of phases by 180 deg. from pulses 7 are inputted to an output inverter 10. The driving waves to be applied to a piezoelectric speaker 2 are the same as a voltage waveform 19, and is the AC voltage waveform having a potential difference twice the electromotive force (e) of an electric power source 1.
JP55152529A 1980-10-30 1980-10-30 Electronic watch with speaker Pending JPS5776471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55152529A JPS5776471A (en) 1980-10-30 1980-10-30 Electronic watch with speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55152529A JPS5776471A (en) 1980-10-30 1980-10-30 Electronic watch with speaker

Publications (1)

Publication Number Publication Date
JPS5776471A true JPS5776471A (en) 1982-05-13

Family

ID=15542423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55152529A Pending JPS5776471A (en) 1980-10-30 1980-10-30 Electronic watch with speaker

Country Status (1)

Country Link
JP (1) JPS5776471A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4487099A (en) * 1982-07-30 1984-12-11 Citizen Watch Company Limited Electro-acoustic transducer drive circuit for producing damped waveform envelope musical notes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4487099A (en) * 1982-07-30 1984-12-11 Citizen Watch Company Limited Electro-acoustic transducer drive circuit for producing damped waveform envelope musical notes

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