JPH01108957U - - Google Patents

Info

Publication number
JPH01108957U
JPH01108957U JP352588U JP352588U JPH01108957U JP H01108957 U JPH01108957 U JP H01108957U JP 352588 U JP352588 U JP 352588U JP 352588 U JP352588 U JP 352588U JP H01108957 U JPH01108957 U JP H01108957U
Authority
JP
Japan
Prior art keywords
led
detection circuit
energizing means
driving
determining
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
JP352588U
Other languages
English (en)
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 JP352588U priority Critical patent/JPH01108957U/ja
Publication of JPH01108957U publication Critical patent/JPH01108957U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Protection Of Static Devices (AREA)
  • Selective Calling Equipment (AREA)
  • Optical Communication System (AREA)

Description

【図面の簡単な説明】
第１図は本願の一実施例を示す回路構成図、第
２図は第１図の動作を説明する波形図、第３図は
第１図の他の実施例を示す回路構成図、第４図及
び第５図は従来例を示す図である。 図に於て、１，１１はＶｆ検出回路、２は増幅
回路、３はラツチ回路、４は遅延回路、５はＮＯ
Ｔゲート、６はＡＮＤゲート、ＤはＬＥＤ、Ｅは
電源、Ｑ１，Ｑ２はトランジスタ、Ｒ１は抵抗を
夫々示している。

Claims (1)

    【実用新案登録請求の範囲】
  1. ＬＥＤと、該ＬＥＤを駆動する第１通電手段と
    、該第１通電手段の通電動作休止時に前記ＬＥＤ
    に微小電流を通電する第２通電手段と、該第２通
    電手段の通電電流値に基づいて前記ＬＥＤの順方
    向ツエナ電圧をもとめる検出回路と、該検出回路
    の出力値に基づいて前記第１通電手段に前記ＬＥ
    Ｄへの通電を調整して破損を防止させる制御手段
    とを有することを特徴とするＬＥＤ駆動装置。
JP352588U 1988-01-14 1988-01-14 Pending JPH01108957U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP352588U JPH01108957U (ja) 1988-01-14 1988-01-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP352588U JPH01108957U (ja) 1988-01-14 1988-01-14

Publications (1)

Publication Number Publication Date
JPH01108957U true JPH01108957U (ja) 1989-07-24

Family

ID=31205234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP352588U Pending JPH01108957U (ja) 1988-01-14 1988-01-14

Country Status (1)

Country Link
JP (1) JPH01108957U (ja)

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