JPS56676A - Small-size electronic device having illuminating unit - Google Patents

Small-size electronic device having illuminating unit

Info

Publication number
JPS56676A
JPS56676A JP7525379A JP7525379A JPS56676A JP S56676 A JPS56676 A JP S56676A JP 7525379 A JP7525379 A JP 7525379A JP 7525379 A JP7525379 A JP 7525379A JP S56676 A JPS56676 A JP S56676A
Authority
JP
Japan
Prior art keywords
illumination
battery
circuit
lighting
light
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.)
Granted
Application number
JP7525379A
Other languages
Japanese (ja)
Other versions
JPS6210093B2 (en
Inventor
Heihachiro Ebihara
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP7525379A priority Critical patent/JPS56676A/en
Publication of JPS56676A publication Critical patent/JPS56676A/en
Publication of JPS6210093B2 publication Critical patent/JPS6210093B2/ja
Granted 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
    • G04C10/02—Arrangements of electric power supplies in time pieces the power supply being a radioactive or photovoltaic source

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To prevent malfunctions of an electronic circuit for illumination lighting, by receiving the illumination lighting light by a photovoltaic element such as a solar battery to compensate drop of the battery voltage. CONSTITUTION:When switch 10 is closed to light lamp 6, the illumination light is received by photovoltaic element 11 such as a solar battery to generate electromotive force in element 11 in the direction where the low potential-side power source terminal of compensated circuit part 9 is lower-potential at the view from the negative pole of battery 7, and voltage drop of battery 7 dependent upon internal resistance 8 caused by lighting of illumination 6 is compensated and prevented. Consequently, the voltage applied to circuit 9 connected in series through forward diode 12 is not dropped, and electronic circuits such as circuit 9 can be prevented from being stopped and being operated erroneously even for illumination lighting.
JP7525379A 1979-06-15 1979-06-15 Small-size electronic device having illuminating unit Granted JPS56676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7525379A JPS56676A (en) 1979-06-15 1979-06-15 Small-size electronic device having illuminating unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7525379A JPS56676A (en) 1979-06-15 1979-06-15 Small-size electronic device having illuminating unit

Publications (2)

Publication Number Publication Date
JPS56676A true JPS56676A (en) 1981-01-07
JPS6210093B2 JPS6210093B2 (en) 1987-03-04

Family

ID=13570863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7525379A Granted JPS56676A (en) 1979-06-15 1979-06-15 Small-size electronic device having illuminating unit

Country Status (1)

Country Link
JP (1) JPS56676A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968289U (en) * 1982-10-29 1984-05-09 株式会社ほくさん Lighting and clock devices powered by solar cells

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968289U (en) * 1982-10-29 1984-05-09 株式会社ほくさん Lighting and clock devices powered by solar cells

Also Published As

Publication number Publication date
JPS6210093B2 (en) 1987-03-04

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