JPH01159541U - - Google Patents

Info

Publication number
JPH01159541U
JPH01159541U JP3372988U JP3372988U JPH01159541U JP H01159541 U JPH01159541 U JP H01159541U JP 3372988 U JP3372988 U JP 3372988U JP 3372988 U JP3372988 U JP 3372988U JP H01159541 U JPH01159541 U JP H01159541U
Authority
JP
Japan
Prior art keywords
detection means
load
current
amount
detected
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
JP3372988U
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 JP3372988U priority Critical patent/JPH01159541U/ja
Publication of JPH01159541U publication Critical patent/JPH01159541U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例を示す回路図、第2
図は本考案の他の実施例を示すブロツク図、第3
図は同実施例のマイクロプロセツサの主な処理を
示す流れ図、第4図は従来例を示す回路図である
。 11…トランジスタ、12…モータ駆動回路、
13…モータ、14…抵抗、15…レベル検出回
路、19…デジタルタイマー。

Claims (1)

    【実用新案登録請求の範囲】
  1. 負荷に流れる電流を検出する電流検出手段と、
    この検出手段が検出する電流の量が予め設定され
    た基準量以上か否かを検出するレベル検出手段と
    、このレベル検出手段が基準量以上を検出したと
    き時間カウントを行なうとともに前記レベル検出
    手段が基準量以下を検出したときクリアされるデ
    ジタルタイマーと、このデジタルタイマーが予め
    設定された基準時間をカウントしたとき前記負荷
    への通電を停止させるスイツチ素子を設けてなる
    過電流保護回路。
JP3372988U 1988-03-16 1988-03-16 Pending JPH01159541U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3372988U JPH01159541U (ja) 1988-03-16 1988-03-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3372988U JPH01159541U (ja) 1988-03-16 1988-03-16

Publications (1)

Publication Number Publication Date
JPH01159541U true JPH01159541U (ja) 1989-11-06

Family

ID=31260421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3372988U Pending JPH01159541U (ja) 1988-03-16 1988-03-16

Country Status (1)

Country Link
JP (1) JPH01159541U (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531034B2 (ja) * 1972-10-30 1978-01-13
JPS5653537A (en) * 1979-10-09 1981-05-13 Mitsubishi Electric Corp Motor overload detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531034B2 (ja) * 1972-10-30 1978-01-13
JPS5653537A (en) * 1979-10-09 1981-05-13 Mitsubishi Electric Corp Motor overload detector

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