JPS6169855U - - Google Patents

Info

Publication number
JPS6169855U
JPS6169855U JP1984152297U JP15229784U JPS6169855U JP S6169855 U JPS6169855 U JP S6169855U JP 1984152297 U JP1984152297 U JP 1984152297U JP 15229784 U JP15229784 U JP 15229784U JP S6169855 U JPS6169855 U JP S6169855U
Authority
JP
Japan
Prior art keywords
light emitting
semiconductor light
transistor
resistor
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.)
Granted
Application number
JP1984152297U
Other languages
English (en)
Other versions
JPH025546Y2 (ja
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 filed Critical
Priority to JP1984152297U priority Critical patent/JPH025546Y2/ja
Publication of JPS6169855U publication Critical patent/JPS6169855U/ja
Application granted granted Critical
Publication of JPH025546Y2 publication Critical patent/JPH025546Y2/ja
Expired legal-status Critical Current

Links

Description

【図面の簡単な説明】
第１図は本考案の実施例の構成図であり、Ａは
ＮＰＮトランジスタを用いた例、ＢはＰＮＰトラ
ンジスタを用いた例である。第２図は従来の保護
回路の構成図、第３図はトランジスタ動作説明の
ためのエバースモル・モデル、第４図は本発明の
効果を説明するためのｉＤ対Ｉのグラフである。 Ｄ…発光ダイオード、Ｔｒ…トランジスタ、Ｒ
…抵抗、Ｉ…定電流源。

Claims (1)

    【実用新案登録請求の範囲】
  1. ２極構造の半導体発光素子に直列に抵抗を接続
    し、その接続点にトランジスタのベースを接続し
    、該トランジスタのコレクタを前記半導体発光素
    子の極性に対して順方向となるよう前記抵抗のも
    う一方の端子に接続し、エミツタを前記半導体発
    光素子のもう一方の端子に接続した回路構成をと
    ることを特徴とする半導体発光素子の保護回路。
JP1984152297U 1984-10-11 1984-10-11 Expired JPH025546Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984152297U JPH025546Y2 (ja) 1984-10-11 1984-10-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984152297U JPH025546Y2 (ja) 1984-10-11 1984-10-11

Publications (2)

Publication Number Publication Date
JPS6169855U true JPS6169855U (ja) 1986-05-13
JPH025546Y2 JPH025546Y2 (ja) 1990-02-09

Family

ID=30710366

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984152297U Expired JPH025546Y2 (ja) 1984-10-11 1984-10-11

Country Status (1)

Country Link
JP (1) JPH025546Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55143081A (en) * 1979-04-26 1980-11-08 Matsushita Electric Works Ltd Luminous source device with light emitting element
JPS5792884A (en) * 1980-12-01 1982-06-09 Mitsubishi Electric Corp Driving circuit for laser diode

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55143081A (en) * 1979-04-26 1980-11-08 Matsushita Electric Works Ltd Luminous source device with light emitting element
JPS5792884A (en) * 1980-12-01 1982-06-09 Mitsubishi Electric Corp Driving circuit for laser diode

Also Published As

Publication number Publication date
JPH025546Y2 (ja) 1990-02-09

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