KR910006732A - 전류검출회로 - Google Patents

전류검출회로 Download PDF

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Publication number
KR910006732A
KR910006732A KR1019900014887A KR900014887A KR910006732A KR 910006732 A KR910006732 A KR 910006732A KR 1019900014887 A KR1019900014887 A KR 1019900014887A KR 900014887 A KR900014887 A KR 900014887A KR 910006732 A KR910006732 A KR 910006732A
Authority
KR
South Korea
Prior art keywords
mos transistor
source
circuit
load
current detection
Prior art date
Application number
KR1019900014887A
Other languages
English (en)
Other versions
KR930007482B1 (ko
Inventor
야스오 오사와
Original Assignee
아오이 죠이치
가부시키가이샤 도시바
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 by 아오이 죠이치, 가부시키가이샤 도시바 filed Critical 아오이 죠이치
Publication of KR910006732A publication Critical patent/KR910006732A/ko
Application granted granted Critical
Publication of KR930007482B1 publication Critical patent/KR930007482B1/ko

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
    • G01R19/16519—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using FET's
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values

Abstract

내용 없음.

Description

전류검출회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명의 제1실시예에 따른 회로도.
제3도는 제2도에 나타낸 회로도를 설명하기 위한 타이밍챠트.
제4도는 본 발명의 제2실시예에 따른 회로도.

Claims (5)

  1. 게이트전극과 부하(24)에 직렬로 연결된 소오스-드레인통로를 갖추고서 부하전류에 응답해서 소오스-드레인전압을 발생시키는 제1MOS트랜지스터(21)와, 입력신호가 인가되는 입력단자(28), 이 제2MOS트랜지스터(22)와, 이 제2MOS트랜지스터(22)에 연결된 정전류원(25)을 갖추고서 기준전압(Vr)을 발생시키기 위한 기준전압발생수단(20), 상기 제1MOS트랜지스터(21)의 소오스-드레인전압에 비례하는 출력전압을 발생시키기 위한 제1회로수단(40), 이 제1회로수단(40)의 출력전압을 상기 기준전압(Vr)과 비교하기 위한 비교수단(27)을 구비하여 구성되어 상기 부하(24)를 통해 흐르는 부하전류를 검출하도록 된 것을 특징으로 하는 전류검출회로.
  2. 제1항에 있어서, 지연수단(26)과, 이 지연수단(26)을 통해 지연된 입력신호가 인가되는 제2MOS트랜지스터(22)를 더 구비하여 구성된 것을 특징으로 하는 전류검출회로.
  3. 제1항에 있어서, 상기 제1회로수단(40)은 상기 제1MOS트랜지스터(21)의 게이트전극에 연결된 게이트전극을 갖춘 제3MOS트랜지스터(52)를 포함하면서 입력신호에 응답해서 상기 비교수단(27)에 출력전압을 제공하도록 된 것을 특징으로 하는 전류검출회로.
  4. 제1항에 있어서, 상기 제1회로수단(40)은 상기 부하(24)와 제1MOS트랜지스터(21)의 접속에 대해 병렬로 구성된 제3MOS트랜지스터(52)와 저항(51)의 직렬접속을 포함하고, 상기 제1 및 제2MOS트랜지스터(21, 22)가 각각 소오스전극과 드레인전극 및 게이트전극을 갖추며, 상기 증폭회로(53)가 제1 및 제3MOS트랜지스터(21, 52)의 소오스전극에 연결된 입력단자를 갖춘 것을 특징으로 하는 전류검출회로.
  5. 제1항에 있어서, 상기 제1회로수단(40)은 상기 부하(24)와 제1MOS트랜지스터(21)의 접속에 대해 병렬로 구성된 제3MOS트랜지스터(52)와 저항(51)의 직렬접속을 포함하고, 상기 제1 및 제2MOS트랜지스터(21, 22)가 각각 소오스전극과 드레인전극 및 게이트전극을 갖추며, 상기 증폭회로(53)가 제1 및 제3MOS트랜지스터(21, 52)의 드레인전극에 연결된 입력단자를 갖춘 것을 특징으로 하는 전류검출회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900014887A 1989-09-20 1990-09-20 전류검출회로 KR930007482B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP89-242024 1989-09-20
JP1242024A JPH079442B2 (ja) 1989-09-20 1989-09-20 電流検出回路
JP01-242024 1989-09-20

Publications (2)

Publication Number Publication Date
KR910006732A true KR910006732A (ko) 1991-04-29
KR930007482B1 KR930007482B1 (ko) 1993-08-11

Family

ID=17083136

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900014887A KR930007482B1 (ko) 1989-09-20 1990-09-20 전류검출회로

Country Status (5)

Country Link
US (1) US5113089A (ko)
EP (1) EP0419093B1 (ko)
JP (1) JPH079442B2 (ko)
KR (1) KR930007482B1 (ko)
DE (1) DE69005755T2 (ko)

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KR100836900B1 (ko) * 2007-02-09 2008-06-11 한양대학교 산학협력단 전류 감지 회로

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Also Published As

Publication number Publication date
DE69005755D1 (de) 1994-02-17
JPH03105262A (ja) 1991-05-02
DE69005755T2 (de) 1994-05-26
US5113089A (en) 1992-05-12
EP0419093A2 (en) 1991-03-27
EP0419093A3 (en) 1991-06-19
KR930007482B1 (ko) 1993-08-11
EP0419093B1 (en) 1994-01-05
JPH079442B2 (ja) 1995-02-01

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