[go: up one dir, main page]

JPS568887A - Lighting circuit for light emitting diode - Google Patents

Lighting circuit for light emitting diode

Info

Publication number
JPS568887A
JPS568887A JP8349679A JP8349679A JPS568887A JP S568887 A JPS568887 A JP S568887A JP 8349679 A JP8349679 A JP 8349679A JP 8349679 A JP8349679 A JP 8349679A JP S568887 A JPS568887 A JP S568887A
Authority
JP
Japan
Prior art keywords
diode
diodes
light emitting
series
lighting
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
JP8349679A
Other languages
Japanese (ja)
Inventor
Tetsuo Takemura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8349679A priority Critical patent/JPS568887A/en
Publication of JPS568887A publication Critical patent/JPS568887A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Led Devices (AREA)

Abstract

PURPOSE:To reduce power consumption in lighting circuits by providing plural light emitting diodes with equivalent resistors which almost correspond to the internal resistance at diode emission wherein each diode is connected in series by a lighting switch corresponding to each diode. CONSTITUTION:Equivalent resistors r0-r19 which almost correspond to the internal resitance of diodes D0-D19 at emission are connected to plural light emitting diodes D0-D19 in parallel with each diode D0-D19. Key contacts S0-S19 for lighting which illuminate the diodes D0-D19 are provided at each parallel circuit. Furthermore, each parallel circuit is connected to a power source E in series through a key contact SUP for power closing and a resistor R for power limit. Resistors corresponding to illuminated diodes and unilluminated diodes are connected in series by the key contacts S0-S19 corresponding to each diode D0-D19 and the power consumption in lighting circuits will be reduced without increasing the number of parts.
JP8349679A 1979-07-03 1979-07-03 Lighting circuit for light emitting diode Pending JPS568887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8349679A JPS568887A (en) 1979-07-03 1979-07-03 Lighting circuit for light emitting diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8349679A JPS568887A (en) 1979-07-03 1979-07-03 Lighting circuit for light emitting diode

Publications (1)

Publication Number Publication Date
JPS568887A true JPS568887A (en) 1981-01-29

Family

ID=13804080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8349679A Pending JPS568887A (en) 1979-07-03 1979-07-03 Lighting circuit for light emitting diode

Country Status (1)

Country Link
JP (1) JPS568887A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215043U (en) * 1985-07-12 1987-01-29
JPS639164U (en) * 1986-07-03 1988-01-21
WO2016132475A1 (en) * 2015-02-18 2016-08-25 三菱電機株式会社 Light-emitting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215043U (en) * 1985-07-12 1987-01-29
JPS639164U (en) * 1986-07-03 1988-01-21
WO2016132475A1 (en) * 2015-02-18 2016-08-25 三菱電機株式会社 Light-emitting device
JPWO2016132475A1 (en) * 2015-02-18 2017-04-27 三菱電機株式会社 LIGHT EMITTING DEVICE AND LIGHT EMITTING DEVICE PARAMETER SETTING METHOD

Similar Documents

Publication Publication Date Title
ATE428319T1 (en) SEQUENTIALLY FLASHING FOOTWEAR
DE68928261D1 (en) Push button switch with light indicator
JPS568887A (en) Lighting circuit for light emitting diode
US4002873A (en) Illuminated pushbutton switch
JPS55127084A (en) Lighting circuit for light emitting diode
JPS5658341A (en) Signal conversion circuit
JPS5361297A (en) Light emitting diode driving circuit
JPS55143467A (en) Deciding unit for contact resistance value of relay
SU1627201A1 (en) Electronic dice
JPS57110982A (en) Portable electronic watch with lighting
JPS5461885A (en) Lighting control circuit
JPS5799035A (en) Two-wire type electronic switch
CN2324623Y (en) Colourful source display switch
RU95102134A (en) Device to control light-emitting diodes
JPS53138266A (en) Signal switch circuit
JPS56157078A (en) Lighting circuit of light emission diode
JPS56118105A (en) Input insulating relay unit
JPS6148836U (en)
JPS6476107A (en) Power source input displaying circuit
JPS5440680A (en) Nephelometer
JPS51146778A (en) Circuit arrangement for lightening a discharge lamp
ES8100743A1 (en) Signaling with luminiscent diodes. (Machine-translation by Google Translate, not legally binding)
JPS5748875A (en) Light source controller
SE455348B (en) Personal paging device in conjunction with telephone
JPS55113386A (en) Light emitting diode energizing circuit