JPH0488334U - - Google Patents

Info

Publication number
JPH0488334U
JPH0488334U JP12903090U JP12903090U JPH0488334U JP H0488334 U JPH0488334 U JP H0488334U JP 12903090 U JP12903090 U JP 12903090U JP 12903090 U JP12903090 U JP 12903090U JP H0488334 U JPH0488334 U JP H0488334U
Authority
JP
Japan
Prior art keywords
latch circuit
detection section
current detection
circuit
overcurrent protection
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
JP12903090U
Other languages
English (en)
Other versions
JP2547101Y2 (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 JP1990129030U priority Critical patent/JP2547101Y2/ja
Publication of JPH0488334U publication Critical patent/JPH0488334U/ja
Application granted granted Critical
Publication of JP2547101Y2 publication Critical patent/JP2547101Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Dc-Dc Converters (AREA)
  • Electronic Switches (AREA)

Description

【図面の簡単な説明】
【図１】本考案の実施例による過電流保護回路
の回路図である。
【図２】上記過電流保護回路の
動作を説明するため、回路の各部の信号波形を示
す信号波形図である。
【図３】従来技術による過
電流保護回路の一例を示す回路図である。 符号の説明、ＣＴ１……カレントトランス、Ｄ
１……ダイオードスタツク、Ｒ１〜Ｒ７……抵抗
、Ｃ１〜Ｃ３……コンデンサ、Ｑ１〜Ｑ３……ト
ランジスタ、１０……電流検出部、２０……ラツ
チ回路、３０……ＰＷＭ制御回路、４０……スイ
ツチング電源回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 電流検出部と、上記電流検出部によつて検出さ
    れた電流の値によつて電源回路を停止させるラツ
    チ回路とを備え、上記電流検出部及び上記ラツチ
    回路の間に、電源投入から所定の期間、上記ラツ
    チ回路の動作を遅延させるための遅延手段を具備
    したスイツチング素子を挿入したことを特徴とす
    る過電流保護回路。
JP1990129030U 1990-11-30 1990-11-30 過電流保護回路 Expired - Lifetime JP2547101Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990129030U JP2547101Y2 (ja) 1990-11-30 1990-11-30 過電流保護回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990129030U JP2547101Y2 (ja) 1990-11-30 1990-11-30 過電流保護回路

Publications (2)

Publication Number Publication Date
JPH0488334U true JPH0488334U (ja) 1992-07-31
JP2547101Y2 JP2547101Y2 (ja) 1997-09-10

Family

ID=31876455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990129030U Expired - Lifetime JP2547101Y2 (ja) 1990-11-30 1990-11-30 過電流保護回路

Country Status (1)

Country Link
JP (1) JP2547101Y2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10275020A (ja) * 1997-03-31 1998-10-13 Toshiba Lighting & Technol Corp 定電圧回路

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54127548A (en) * 1978-03-27 1979-10-03 Matsushita Electric Works Ltd Apparatus for protecting motor from impact load
JPH02193520A (ja) * 1989-01-20 1990-07-31 Fujitsu General Ltd 過電流検出装置による電源遮断方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54127548A (en) * 1978-03-27 1979-10-03 Matsushita Electric Works Ltd Apparatus for protecting motor from impact load
JPH02193520A (ja) * 1989-01-20 1990-07-31 Fujitsu General Ltd 過電流検出装置による電源遮断方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10275020A (ja) * 1997-03-31 1998-10-13 Toshiba Lighting & Technol Corp 定電圧回路

Also Published As

Publication number Publication date
JP2547101Y2 (ja) 1997-09-10

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