JPS5533023A - Temperature compensation circuit for light-emitting semiconductor device - Google Patents

Temperature compensation circuit for light-emitting semiconductor device

Info

Publication number
JPS5533023A
JPS5533023A JP10477478A JP10477478A JPS5533023A JP S5533023 A JPS5533023 A JP S5533023A JP 10477478 A JP10477478 A JP 10477478A JP 10477478 A JP10477478 A JP 10477478A JP S5533023 A JPS5533023 A JP S5533023A
Authority
JP
Japan
Prior art keywords
transistor
light
resistor
diode
temperature compensation
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
JP10477478A
Other languages
Japanese (ja)
Inventor
Kazuo Hisama
Shuichi Tai
Masahiko Hirano
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP10477478A priority Critical patent/JPS5533023A/en
Publication of JPS5533023A publication Critical patent/JPS5533023A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/06804—Stabilisation of laser output parameters by monitoring an external parameter, e.g. temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)
  • Led Devices (AREA)

Abstract

PURPOSE:To simplify the temperature compensation of light emission output of a light-emitting diode which is driven through a transistor, by saturating the base resistance of the transistor by a variable resistor. CONSTITUTION:The light-emitting diode 1, a current amplifying transistor TR1, resistors 30-32 connected to the collector, emitter and base of the transistor and a power transistor TR2 for driving the diode 1 are provided. The base of the transistor TR2 is coupled to the emitter of the transistor TR1 through a resistor 33. A capacitor 35 for quickening the action of the transistor TR2 is connected in parallel with the resistor 33. A resistor 34 for limiting a current, which is caused to flow through the diode, is coupled to the transistor TR2. Since the resistor 33 is a variable one, the temperature characteristics of the diode and a driving circuit can be compensated by each other to stabilize the light emission output.
JP10477478A 1978-08-28 1978-08-28 Temperature compensation circuit for light-emitting semiconductor device Pending JPS5533023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10477478A JPS5533023A (en) 1978-08-28 1978-08-28 Temperature compensation circuit for light-emitting semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10477478A JPS5533023A (en) 1978-08-28 1978-08-28 Temperature compensation circuit for light-emitting semiconductor device

Publications (1)

Publication Number Publication Date
JPS5533023A true JPS5533023A (en) 1980-03-08

Family

ID=14389817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10477478A Pending JPS5533023A (en) 1978-08-28 1978-08-28 Temperature compensation circuit for light-emitting semiconductor device

Country Status (1)

Country Link
JP (1) JPS5533023A (en)

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