JPS57156576A - Electronic timepiece with battery run-down annunciator - Google Patents

Electronic timepiece with battery run-down annunciator

Info

Publication number
JPS57156576A
JPS57156576A JP56041526A JP4152681A JPS57156576A JP S57156576 A JPS57156576 A JP S57156576A JP 56041526 A JP56041526 A JP 56041526A JP 4152681 A JP4152681 A JP 4152681A JP S57156576 A JPS57156576 A JP S57156576A
Authority
JP
Japan
Prior art keywords
battery
circuit
pulse absence
run
annunciate
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
JP56041526A
Other languages
Japanese (ja)
Inventor
Masuaki Kitahora
Takao Shoda
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki 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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP56041526A priority Critical patent/JPS57156576A/en
Publication of JPS57156576A publication Critical patent/JPS57156576A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/04—Arrangements of electric power supplies in time pieces with means for indicating the condition of the power supply

Abstract

PURPOSE:To annunciate a battery state securely by annunciating and displaying the run-down of a battery by detecting the pulse absence of an oscillation output or a frequency division output. CONSTITUTION:When a switch SW1 is closed to drive a lamp 5, the terminal voltage of a battery drops greatly during an instantaneous decrease in the internal resistance of the lamp 5 if the residual capacity of the battery 2 is small. Consequently, an oscillating circuit 6 or a frequency dividing circuit 7 stops operation temporarily by a voltage lower than the threshold value of a C-MOS transistor constituting the circuit, causing pulse absence. This pulse absence is detected by a pulse absence detecting circuit 10 and a display device 9 performs display by flashing, etc., to annunciate the battery state such as a run-down securely.
JP56041526A 1981-03-20 1981-03-20 Electronic timepiece with battery run-down annunciator Pending JPS57156576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56041526A JPS57156576A (en) 1981-03-20 1981-03-20 Electronic timepiece with battery run-down annunciator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56041526A JPS57156576A (en) 1981-03-20 1981-03-20 Electronic timepiece with battery run-down annunciator

Publications (1)

Publication Number Publication Date
JPS57156576A true JPS57156576A (en) 1982-09-27

Family

ID=12610836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56041526A Pending JPS57156576A (en) 1981-03-20 1981-03-20 Electronic timepiece with battery run-down annunciator

Country Status (1)

Country Link
JP (1) JPS57156576A (en)

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