JPS57171283A - Alarm clock - Google Patents

Alarm clock

Info

Publication number
JPS57171283A
JPS57171283A JP5798681A JP5798681A JPS57171283A JP S57171283 A JPS57171283 A JP S57171283A JP 5798681 A JP5798681 A JP 5798681A JP 5798681 A JP5798681 A JP 5798681A JP S57171283 A JPS57171283 A JP S57171283A
Authority
JP
Japan
Prior art keywords
circuit
coil
alarm
snooze
voltage
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
JP5798681A
Other languages
Japanese (ja)
Inventor
Yoshihiro Sakurai
Toshiaki Tanaka
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP5798681A priority Critical patent/JPS57171283A/en
Publication of JPS57171283A publication Critical patent/JPS57171283A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To make snooze time coincide at all times with elapsed time indicated on a clock indicator, by making built-in counter for an alarm auto-cut circuit and a snooze control circuit count voltage induced in a coil of a step motor. CONSTITUTION:A step motor 19 is composed of a coil 19a, a fixed unit 19b and a rotor 19c. Turning of the rotor 19c is reduced by intervention of the second wheel 20 and conveyed to a second-indicating wheel 21, and this is detected by an inductive voltage detecting section 22 of the coil 19a and given to an alarm auto-cut circuit 24 and a snooze control circuit 25 through an amplifying-and- wave-shaping circuit 23. While it is possible, by making quick forwarding manually, to close a hand-turning detecting switch 31 and prohibit coming of motor driving signal from a frequency dividing circuit 17, pulse voltage is continuously induced to the coil 19a, and when counting of a built-in counter of the circuit 25 shows a prescribed value, a snooze cancelling signal is given to an alarm input circuit 27 causing a high-level voltage to be produced and an alarm to be sounded.
JP5798681A 1981-04-15 1981-04-15 Alarm clock Pending JPS57171283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5798681A JPS57171283A (en) 1981-04-15 1981-04-15 Alarm clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5798681A JPS57171283A (en) 1981-04-15 1981-04-15 Alarm clock

Publications (1)

Publication Number Publication Date
JPS57171283A true JPS57171283A (en) 1982-10-21

Family

ID=13071324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5798681A Pending JPS57171283A (en) 1981-04-15 1981-04-15 Alarm clock

Country Status (1)

Country Link
JP (1) JPS57171283A (en)

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