JPS57204484A - Alarm sound generating device for crystal clock - Google Patents

Alarm sound generating device for crystal clock

Info

Publication number
JPS57204484A
JPS57204484A JP8998081A JP8998081A JPS57204484A JP S57204484 A JPS57204484 A JP S57204484A JP 8998081 A JP8998081 A JP 8998081A JP 8998081 A JP8998081 A JP 8998081A JP S57204484 A JPS57204484 A JP S57204484A
Authority
JP
Japan
Prior art keywords
alarm
motor
signal
driven
generating device
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
JP8998081A
Other languages
Japanese (ja)
Inventor
Toshio Tomizuka
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.)
Seikosha KK
Original Assignee
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 Seikosha KK filed Critical Seikosha KK
Priority to JP8998081A priority Critical patent/JPS57204484A/en
Publication of JPS57204484A publication Critical patent/JPS57204484A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times

Abstract

PURPOSE:To use a stator buzzer system, in an electronic clock driven by a step- motor, by superposing an alarm signal on a driving signal of the step-motor. CONSTITUTION:At a usual time when an alarm switch SW is opened, only a motor signal (a) is supplied to an input terminal 21, transistors TR1, TR2 are turned on alternately, and a short form-like alternating driving current I1 is electrified to a coil 5 of a step-motor. As a result, a clock ring row is driven at every 1sec. When an alarm set time comes, the alarm switch SW is closed, and an alarm signal (b) passes through an AND gate 22 and is supplied to an input terminal 23. Accordingly, an alarm driving current I2 is superposed on the alternating current I1, is electrified to the coil 5, the clock ring row is driven and also the stator buzzer is vibrated.
JP8998081A 1981-06-11 1981-06-11 Alarm sound generating device for crystal clock Pending JPS57204484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8998081A JPS57204484A (en) 1981-06-11 1981-06-11 Alarm sound generating device for crystal clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8998081A JPS57204484A (en) 1981-06-11 1981-06-11 Alarm sound generating device for crystal clock

Publications (1)

Publication Number Publication Date
JPS57204484A true JPS57204484A (en) 1982-12-15

Family

ID=13985808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8998081A Pending JPS57204484A (en) 1981-06-11 1981-06-11 Alarm sound generating device for crystal clock

Country Status (1)

Country Link
JP (1) JPS57204484A (en)

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