DE69107276D1 - Konstantstrom-Schaltkreis für lichtemittierendes Element. - Google Patents

Konstantstrom-Schaltkreis für lichtemittierendes Element.

Info

Publication number
DE69107276D1
DE69107276D1 DE69107276T DE69107276T DE69107276D1 DE 69107276 D1 DE69107276 D1 DE 69107276D1 DE 69107276 T DE69107276 T DE 69107276T DE 69107276 T DE69107276 T DE 69107276T DE 69107276 D1 DE69107276 D1 DE 69107276D1
Authority
DE
Germany
Prior art keywords
light emitting
emitting element
constant current
current circuit
circuit
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.)
Expired - Fee Related
Application number
DE69107276T
Other languages
English (en)
Other versions
DE69107276T2 (de
Inventor
Fujito Fukudome
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69107276D1 publication Critical patent/DE69107276D1/de
Publication of DE69107276T2 publication Critical patent/DE69107276T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/22—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
    • H03F3/08—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/902—Optical coupling to semiconductor

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Semiconductor Lasers (AREA)
  • Led Devices (AREA)
  • Optical Communication System (AREA)
DE69107276T 1990-10-20 1991-10-18 Konstantstrom-Schaltkreis für lichtemittierendes Element. Expired - Fee Related DE69107276T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2283207A JPH04157771A (ja) 1990-10-20 1990-10-20 定電流回路

Publications (2)

Publication Number Publication Date
DE69107276D1 true DE69107276D1 (de) 1995-03-23
DE69107276T2 DE69107276T2 (de) 1995-07-20

Family

ID=17662508

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69107276T Expired - Fee Related DE69107276T2 (de) 1990-10-20 1991-10-18 Konstantstrom-Schaltkreis für lichtemittierendes Element.

Country Status (4)

Country Link
US (1) US5341086A (de)
EP (1) EP0482520B1 (de)
JP (1) JPH04157771A (de)
DE (1) DE69107276T2 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6064155A (en) * 1998-05-04 2000-05-16 Matsushita Electric Works Research And Development Labratory Inc Compact fluorescent lamp as a retrofit for an incandescent lamp
FR2799317B1 (fr) * 1999-10-01 2001-12-14 St Microelectronics Sa Regulateur lineaire a selection de la tension de sortie
DE10164561B4 (de) * 2001-12-14 2004-03-04 Siemens Ag Schaltungsanordnung zum Betreiben eines LED-Signals
US7706692B2 (en) * 2004-09-29 2010-04-27 Finisar Corporation Consumer electronics with optical communication interface
US7548675B2 (en) * 2004-09-29 2009-06-16 Finisar Corporation Optical cables for consumer electronics
TWM274702U (en) * 2005-03-04 2005-09-01 Sheng-He Chen Voltage-dividing apparatus for prevention of power surge from laser diode
JP4919621B2 (ja) * 2005-06-24 2012-04-18 株式会社オーディオテクニカ コンデンサーマイクロホン
US7729618B2 (en) * 2005-08-30 2010-06-01 Finisar Corporation Optical networks for consumer electronics
US7860398B2 (en) * 2005-09-15 2010-12-28 Finisar Corporation Laser drivers for closed path optical cables
US7712976B2 (en) * 2006-04-10 2010-05-11 Finisar Corporation Active optical cable with integrated retiming
US7778510B2 (en) * 2006-04-10 2010-08-17 Finisar Corporation Active optical cable electrical connector
US8083417B2 (en) * 2006-04-10 2011-12-27 Finisar Corporation Active optical cable electrical adaptor
US7876989B2 (en) * 2006-04-10 2011-01-25 Finisar Corporation Active optical cable with integrated power
US8769171B2 (en) * 2007-04-06 2014-07-01 Finisar Corporation Electrical device with electrical interface that is compatible with integrated optical cable receptacle
US8244124B2 (en) 2007-04-30 2012-08-14 Finisar Corporation Eye safety mechanism for use in optical cable with electrical interfaces
DE102007044339B4 (de) * 2007-09-17 2020-08-20 Tridonic Gmbh & Co Kg Leuchtdioden-Modul und Verfahren zur Steuerung eines Leuchtdioden-Moduls
US7928719B2 (en) * 2008-01-07 2011-04-19 Shenzhen Sts Microelectronics Co., Ltd. Zero current detector for a DC-DC converter
WO2012075188A1 (en) * 2010-11-30 2012-06-07 The Sloan Company, Inc. Dba Sloanled Power control unit
EP2600694B1 (de) * 2011-11-30 2013-11-20 Vossloh-Schwabe Deutschland GmbH LED-Treiberschaltung mit konstanter Stromsparbetriebsfläche

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2147944A1 (de) * 1971-09-25 1973-03-29 Bosch Fernsehanlagen Schaltungsanordnung mit lumineszenzdiode
US4011557A (en) * 1973-08-23 1977-03-08 Ebauches S.A. Device in a time piece for feeding an electro-luminescent display
US4017847A (en) * 1975-11-14 1977-04-12 Bell Telephone Laboratories, Incorporated Luminous indicator with zero standby power
JPS5847347A (ja) * 1981-09-16 1983-03-19 Nec Corp レ−ザダイオ−ドの出力安定化回路
JPS58171140A (ja) * 1982-04-01 1983-10-07 Fujitsu Ltd 定電流回路
JPS63305837A (ja) * 1987-06-05 1988-12-13 Katsuyuki Miyasaka 電子機器

Also Published As

Publication number Publication date
JPH04157771A (ja) 1992-05-29
US5341086A (en) 1994-08-23
DE69107276T2 (de) 1995-07-20
EP0482520B1 (de) 1995-02-08
EP0482520A1 (de) 1992-04-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee