JPS5793275A - Analogue indication electronic clock - Google Patents

Analogue indication electronic clock

Info

Publication number
JPS5793275A
JPS5793275A JP16966480A JP16966480A JPS5793275A JP S5793275 A JPS5793275 A JP S5793275A JP 16966480 A JP16966480 A JP 16966480A JP 16966480 A JP16966480 A JP 16966480A JP S5793275 A JPS5793275 A JP S5793275A
Authority
JP
Japan
Prior art keywords
step motor
signal
time
outputted
gate
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
JP16966480A
Other languages
Japanese (ja)
Inventor
Shigeki Kurahashi
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP16966480A priority Critical patent/JPS5793275A/en
Publication of JPS5793275A publication Critical patent/JPS5793275A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step

Landscapes

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

Abstract

PURPOSE:To prevent the extreme reduction in a power source voltage and to prevent a malfunction of a clock, by a method wherein a heavy load circuit, such as alarming devices, illuminating devices, is caused to suspend driving at a driving time of a step motor and before and after the driving time. CONSTITUTION:A signal of 1Hz and a pulse width 7.8ms, outputted from an AND gate 15, is applied to a step motor drive circuit 16, and a step motor 27 is driven in a step manner at every one second to move a hand in a step manner. Simultaneously, a signal of 1Hz outputted from the AND gate is counted by a timing counter circuit 17. When coinciding with an alarm time information set and stored in an alarm time set circuit 28, and an alarm signal AL is outputted. A time zone output signal of a pulse width 15.65ms including a time before and after the output of the AND gate 15 is transmitted, and this causes a buzzer drive circuit 33 to suspend activating during the operation of a step motor drive circuit 16.
JP16966480A 1980-12-03 1980-12-03 Analogue indication electronic clock Pending JPS5793275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16966480A JPS5793275A (en) 1980-12-03 1980-12-03 Analogue indication electronic clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16966480A JPS5793275A (en) 1980-12-03 1980-12-03 Analogue indication electronic clock

Publications (1)

Publication Number Publication Date
JPS5793275A true JPS5793275A (en) 1982-06-10

Family

ID=15890634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16966480A Pending JPS5793275A (en) 1980-12-03 1980-12-03 Analogue indication electronic clock

Country Status (1)

Country Link
JP (1) JPS5793275A (en)

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