JPS57196183A - Electronic timepiece with lamp - Google Patents

Electronic timepiece with lamp

Info

Publication number
JPS57196183A
JPS57196183A JP56081361A JP8136181A JPS57196183A JP S57196183 A JPS57196183 A JP S57196183A JP 56081361 A JP56081361 A JP 56081361A JP 8136181 A JP8136181 A JP 8136181A JP S57196183 A JPS57196183 A JP S57196183A
Authority
JP
Japan
Prior art keywords
lamp
switch
circuit
timer circuit
reset
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
JP56081361A
Other languages
Japanese (ja)
Inventor
Hitomi Ayusawa
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa 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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP56081361A priority Critical patent/JPS57196183A/en
Publication of JPS57196183A publication Critical patent/JPS57196183A/en
Pending 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
    • G04G19/08—Arrangements for preventing voltage drop due to overloading the power supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To prevent drop in battery voltage and mistaken operation of an electronic circuit by the arrangement of turning off the lamp when a specified time has passed even if the switch for the lamp is ON continuously. CONSTITUTION:When a switch 13 to light the lamp is ON, timer circuits 5 and 6 start measurement by means of an one-section period signal that is the output of a frequency divider circuit 2, and within 2.5-3.5sec the output of a NAND gate 8 becomes 1, and since the inputs to a NANA gate 9 are both 1, a bipolar transistor has continuity and a lamp 10 is lighted. After 2.5-3.5sec have passed, the input of a clock signal to a timer circuit is prohibited and the lamp 10 is turned off. When a switch 13 of the lamp 10 is OFF, the timer circuit is reset. If the switch 13 is OFF within 2.5-3.5sec, the timer circuit is reset and the lamp 10 is turned off.
JP56081361A 1981-05-28 1981-05-28 Electronic timepiece with lamp Pending JPS57196183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56081361A JPS57196183A (en) 1981-05-28 1981-05-28 Electronic timepiece with lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56081361A JPS57196183A (en) 1981-05-28 1981-05-28 Electronic timepiece with lamp

Publications (1)

Publication Number Publication Date
JPS57196183A true JPS57196183A (en) 1982-12-02

Family

ID=13744193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56081361A Pending JPS57196183A (en) 1981-05-28 1981-05-28 Electronic timepiece with lamp

Country Status (1)

Country Link
JP (1) JPS57196183A (en)

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