JPS5582084A - Electronic watch with alarm - Google Patents

Electronic watch with alarm

Info

Publication number
JPS5582084A
JPS5582084A JP15616078A JP15616078A JPS5582084A JP S5582084 A JPS5582084 A JP S5582084A JP 15616078 A JP15616078 A JP 15616078A JP 15616078 A JP15616078 A JP 15616078A JP S5582084 A JPS5582084 A JP S5582084A
Authority
JP
Japan
Prior art keywords
alarm
drive
coil
step motor
pulse
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
JP15616078A
Other languages
Japanese (ja)
Inventor
Minoru Watanabe
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP15616078A priority Critical patent/JPS5582084A/en
Publication of JPS5582084A publication Critical patent/JPS5582084A/en
Pending legal-status Critical Current

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  • Electromechanical Clocks (AREA)

Abstract

PURPOSE: To constitute small size and simple constitution for the watch with alarm, by commonly using the drive coil of step motor to the booster coil for piezoelectric oscillator driving.
CONSTITUTION: The watch pulse from the drive circut 3 is fed to the drive coil 6 of the step motor and time display is made via the step motor. When alarm time is set provided at the alarm set section 9, the coincidence pulse having broad width is produced from the alarm control circuit 10 delayed with the time drive pulse, the switches 12, 13 are selected and the coincidence pulse is boosted at the coil 6 and fed to the piezoelectric oscillator 19. Accordingly, the buzzer tone is produced from the oscillator via the switching transistor 16 turned on and off with a given frequency signal outputted from the circuit 10, resistor 17 and capacitor 18 to constitute the alarm tone. As a result, the drive coil of the step motor is commonly used as the booster coil for piezoelectric oscillator drive, resulting that the constitution of the electronic watch with alarm is made small and simple.
COPYRIGHT: (C)1980,JPO&Japio
JP15616078A 1978-12-15 1978-12-15 Electronic watch with alarm Pending JPS5582084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15616078A JPS5582084A (en) 1978-12-15 1978-12-15 Electronic watch with alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15616078A JPS5582084A (en) 1978-12-15 1978-12-15 Electronic watch with alarm

Publications (1)

Publication Number Publication Date
JPS5582084A true JPS5582084A (en) 1980-06-20

Family

ID=15621652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15616078A Pending JPS5582084A (en) 1978-12-15 1978-12-15 Electronic watch with alarm

Country Status (1)

Country Link
JP (1) JPS5582084A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362399A (en) * 1979-10-12 1982-12-07 U.S. Philips Corporation Circuit for an electronic clock having a parallel-connected alarm device and stepper motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362399A (en) * 1979-10-12 1982-12-07 U.S. Philips Corporation Circuit for an electronic clock having a parallel-connected alarm device and stepper motor

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