JPS559168A - Alarm-fitted electronic clock - Google Patents

Alarm-fitted electronic clock

Info

Publication number
JPS559168A
JPS559168A JP8275078A JP8275078A JPS559168A JP S559168 A JPS559168 A JP S559168A JP 8275078 A JP8275078 A JP 8275078A JP 8275078 A JP8275078 A JP 8275078A JP S559168 A JPS559168 A JP S559168A
Authority
JP
Japan
Prior art keywords
circuit
lamp
transistor
turned
buzzer
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.)
Granted
Application number
JP8275078A
Other languages
Japanese (ja)
Other versions
JPS6130713B2 (en
Inventor
Hideyuki Kawashima
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 JP8275078A priority Critical patent/JPS559168A/en
Publication of JPS559168A publication Critical patent/JPS559168A/en
Publication of JPS6130713B2 publication Critical patent/JPS6130713B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Audible And Visible Signals (AREA)

Abstract

PURPOSE:To reduce the size of module and rationalize work procedure, by combining in one circuit the function of buzzer drive and that of lighting a lamp and thereby reducing circuit components. CONSTITUTION:When this circuit functions as a buzzer drive circuit, a rectangular- waveform AC signal is output to buzzer signal line 15 at the time set in electronic circuit 14, and thereby transistor 16 repeats switching. When transistor 16 is turned ON, current flows from battery 20, the voltage is raised by booster coil 17, piezoelectric buzzer 18 vibrates and an alarm is sounded. When this circuit functions as a lamp lighting circuit, lamp-lighting switch 13 is turned on. Transistor 16 is turned ON, current flows from battery 20 to booster coil 17 and lamp 19, and lamp 19 is lit.
JP8275078A 1978-07-07 1978-07-07 Alarm-fitted electronic clock Granted JPS559168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8275078A JPS559168A (en) 1978-07-07 1978-07-07 Alarm-fitted electronic clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8275078A JPS559168A (en) 1978-07-07 1978-07-07 Alarm-fitted electronic clock

Publications (2)

Publication Number Publication Date
JPS559168A true JPS559168A (en) 1980-01-23
JPS6130713B2 JPS6130713B2 (en) 1986-07-15

Family

ID=13783099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8275078A Granted JPS559168A (en) 1978-07-07 1978-07-07 Alarm-fitted electronic clock

Country Status (1)

Country Link
JP (1) JPS559168A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58152697U (en) * 1982-04-05 1983-10-13 セイコーインスツルメンツ株式会社 Piezoelectric buzzer drive circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58152697U (en) * 1982-04-05 1983-10-13 セイコーインスツルメンツ株式会社 Piezoelectric buzzer drive circuit

Also Published As

Publication number Publication date
JPS6130713B2 (en) 1986-07-15

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