JPH03109863U - - Google Patents

Info

Publication number
JPH03109863U
JPH03109863U JP1969190U JP1969190U JPH03109863U JP H03109863 U JPH03109863 U JP H03109863U JP 1969190 U JP1969190 U JP 1969190U JP 1969190 U JP1969190 U JP 1969190U JP H03109863 U JPH03109863 U JP H03109863U
Authority
JP
Japan
Prior art keywords
circuit
pseudo load
drive circuit
print head
current detection
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
JP1969190U
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 JP1969190U priority Critical patent/JPH03109863U/ja
Publication of JPH03109863U publication Critical patent/JPH03109863U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Dot-Matrix Printers And Others (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例を部分的に示す回路
図である。 1……マイクロプロセツサー、2〜5……パワ
ートランジスタ、6,7……擬似負荷、8……印
字ヘツドコイル、9……コンパレータ、10……
電流検出用抵抗、11,12……v1設定のブリ
ーダー抵抗、13……駆動電源、14……TTL
電源。

Claims (1)

    【実用新案登録請求の範囲】
  1. プリンタのモータ又は印字ヘツド駆動回路部に
    おいて、電流検出回路と擬似負荷回路とを持ち、
    フアームウエアにより擬似負荷回路を動作させ、
    駆動回路の診断を容易にすることを特徴とする診
    断回路。
JP1969190U 1990-02-27 1990-02-27 Pending JPH03109863U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1969190U JPH03109863U (ja) 1990-02-27 1990-02-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1969190U JPH03109863U (ja) 1990-02-27 1990-02-27

Publications (1)

Publication Number Publication Date
JPH03109863U true JPH03109863U (ja) 1991-11-12

Family

ID=31522794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1969190U Pending JPH03109863U (ja) 1990-02-27 1990-02-27

Country Status (1)

Country Link
JP (1) JPH03109863U (ja)

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