KR960036230A - Overcurrent protection device - Google Patents

Overcurrent protection device Download PDF

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Publication number
KR960036230A
KR960036230A KR1019960000360A KR19960000360A KR960036230A KR 960036230 A KR960036230 A KR 960036230A KR 1019960000360 A KR1019960000360 A KR 1019960000360A KR 19960000360 A KR19960000360 A KR 19960000360A KR 960036230 A KR960036230 A KR 960036230A
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KR
South Korea
Prior art keywords
resistor
divided voltage
semiconductor switch
state
voltage
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Application number
KR1019960000360A
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Korean (ko)
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KR0182160B1 (en
Inventor
쥰지 오오쯔까
히로끼 야마모또
Original Assignee
나이또오 스스무
린나이 가부시끼 가이샤
최창선
린나이 코리아 주식회사
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Application filed by 나이또오 스스무, 린나이 가부시끼 가이샤, 최창선, 린나이 코리아 주식회사 filed Critical 나이또오 스스무
Publication of KR960036230A publication Critical patent/KR960036230A/en
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Publication of KR0182160B1 publication Critical patent/KR0182160B1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • 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
    • G01R15/04—Voltage dividers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications

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  • Emergency Protection Circuit Devices (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Protection Of Static Devices (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Selective Calling Equipment (AREA)

Abstract

[목적] 과전류보호동작중의 반도체스위치소자의 오프상태에 있어서의 접속단자간의 상태를 저비용으로 정도좋게 판별할 수 있는 과전류보호장치의 제공.[Object] Providing an overcurrent protection device capable of judging the state between connection terminals in an off state of a semiconductor switch element during an overcurrent protection operation at a low cost and with good accuracy.

[구성] 제2분압전압(V2)쪽이 제1분압전압(V1)보다 높아지면, 과전류 검출회로(5)가 파워트랜지스터(1)를 오프상태로 변환하여 과전류보호동작으로 이행하고, 과전류보호동작중에 제1분압전압(V1)쪽이 제2분압전압(V2)보다 높아지면, 과전류검출회로(5)가 파워트랜지스터(1)를 온상태로 변환한다.[Configuration] The second divided voltage (V 2) side becomes higher than the first divided voltage (V 1), and the overcurrent detecting circuit 5, converts the power transistor (1) in the off state, and proceeds to the overcurrent protection operation, becomes higher than the first divided voltage (V 1) side is a second divided voltage (V 2) during the overcurrent protection operation, the overcurrent detecting circuit 5, and converts the power transistor (1) in the on state.

Description

과전류 보호장치Overcurrent protection device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명의 일실시예에 관한 과전류보호장치의 전기회로도, 제2도(a)는 그 과전류보호장치의 파워트랜지스터온시에 있어서의 각 저항의 실질적인 접속상태를 나타낸 회로도, (b)는 파워트랜지스터오프시에 있어서의 각 저항의 실질적인 접속상태를 나타낸 회로도, 제3도는 청구항 1의 구성을 나타낸 과전류 보호장치의 원리도.FIG. 2 (a) is a circuit diagram showing an actual connection state of each resistance when the power transistor is turned on in the overcurrent protection device, FIG. 2 (b) Is a circuit diagram showing a substantial connecting state of each resistance when the power transistor is turned off, and Fig. 3 is a principle diagram of the overcurrent protecting apparatus showing the constitution of claim 1. Fig.

Claims (3)

반도체스위치, 제1저항 및 전기부하가 연결되는 접속단자가 직류전원에 직력로 전기접속되어 있고, 직력 접속된 제2저항과 제3저항이 상기 반도체스위치에 병렬접속되어 있고, 상기 제2,제3의 접속점 제1저항접속측의 상기 접속단자간의 전압차에 의거하여 상기 반도체스위치의 상태를 변환하는 과전류검출회로를 구비하는 것을 특징으로 하는 과전류보호장치.A semiconductor switch, a first resistor, and a connection terminal to which the electrical load is connected are electrically connected to a DC power source by a direct force, and a second resistor and a third resistor connected in series are connected in parallel to the semiconductor switch, 3. The overcurrent protection device according to claim 1, further comprising: an overcurrent detection circuit that converts the state of the semiconductor switch based on a voltage difference between the connection terminals on the first resistor connection side. 반도체스위치, 제1저항 및 전기부하가 연결되는 접속단자가 직류전원에 전기 접속하고, 직렬접속된 제2저항과 제3저항이 상기 반도체스위치에 병렬접속되어 있고, 상기 접속단자의 전위를 분압하는 제1분압회로와 상기 제2저항과 제3저항의 접속점의 전위를 분아하는 제2분압회로를 설치하고, 상기 반도체스우치의 온상태에 있어서 상기 전기부하의 저항치가 소정치미만이 되면, 제2분압전압쪽이 제1분압전압보다 높아지도록 정수를 설정하고, 상기 제1분압전압과 제2분압전압을 비교하여, 제2분압전압쪽이 제1분압전압보다 높아지면, 상기 반도체스위치를 오프상태로 변환하고, 제1분압전압쪽이 제2분압전압보다 높아지면, 상기 반도체스위치를 온상태로 변환하는 과전류검출회로를 설치한 것을 특징으로 하는 과전류보호장치.A semiconductor switch, a first resistor, and a connection terminal to which the electrical load is connected are electrically connected to a DC power source, a second resistor and a third resistor connected in series are connected in parallel to the semiconductor switch, A second voltage dividing circuit for dividing a potential of a connection point between the first and second voltage dividing circuits and the second resistor and the third resistor is provided and when the resistance value of the electrical load becomes less than a predetermined value in the ON state of the semiconductor switch, The second divided voltage is higher than the first divided voltage, and when the second divided voltage is higher than the first divided voltage, the first divided voltage is compared with the second divided voltage, OFF state, and when the first divided voltage becomes higher than the second divided voltage, an overcurrent detecting circuit is provided for converting the semiconductor switch to an ON state. 제1항 또는 2항에 있어서, 상기 직류전원은 안정화전원회로이고, 상기 전기부하는 접속선을 거쳐 원격접속되고, 상기 전기부하의 저항치에 비하여 상기 제1저항의 저항치를 대폭으로 작게 설정하고, 상기 반도체스위치의 오프상태에 있어서의 제한전류를 상기 제1저항, 제2저항, 제3저항의 합계저항치를 가지고 설정하는 것을 특징으로 하는 과전류보호장치.The power supply circuit according to claim 1 or 2, wherein the direct current power supply is a stabilized power supply circuit, the electric load is remotely connected via a connection line, the resistance value of the first resistor is set to be significantly smaller than the resistance value of the electric load, Wherein the limit current in the OFF state of the semiconductor switch is set to have a total resistance value of the first resistor, the second resistor, and the third resistor. ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960000360A 1995-03-29 1996-01-10 Overcurrent protection device KR0182160B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP07174495A JP3277091B2 (en) 1995-03-29 1995-03-29 Overcurrent protection device
JP95-071744 1995-03-29

Publications (2)

Publication Number Publication Date
KR960036230A true KR960036230A (en) 1996-10-28
KR0182160B1 KR0182160B1 (en) 1999-05-15

Family

ID=13469346

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960000360A KR0182160B1 (en) 1995-03-29 1996-01-10 Overcurrent protection device

Country Status (2)

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JP (1) JP3277091B2 (en)
KR (1) KR0182160B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101301518B1 (en) * 2012-06-22 2013-09-04 김영준 Motor starter circuit including sparkless switches and low-cost motor protections for three phase induction motors
KR20230055547A (en) * 2021-10-19 2023-04-26 에이치디현대일렉트릭 주식회사 Circuit breaker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102780198B (en) * 2011-05-12 2016-01-20 上海联影医疗科技有限公司 Current foldback circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101301518B1 (en) * 2012-06-22 2013-09-04 김영준 Motor starter circuit including sparkless switches and low-cost motor protections for three phase induction motors
KR20230055547A (en) * 2021-10-19 2023-04-26 에이치디현대일렉트릭 주식회사 Circuit breaker

Also Published As

Publication number Publication date
JPH08275263A (en) 1996-10-18
JP3277091B2 (en) 2002-04-22
KR0182160B1 (en) 1999-05-15

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