KR950004673A - Load protection circuit when low voltage is applied - Google Patents

Load protection circuit when low voltage is applied Download PDF

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Publication number
KR950004673A
KR950004673A KR1019930012488A KR930012488A KR950004673A KR 950004673 A KR950004673 A KR 950004673A KR 1019930012488 A KR1019930012488 A KR 1019930012488A KR 930012488 A KR930012488 A KR 930012488A KR 950004673 A KR950004673 A KR 950004673A
Authority
KR
South Korea
Prior art keywords
unit
load
voltage
rectifying
power
Prior art date
Application number
KR1019930012488A
Other languages
Korean (ko)
Other versions
KR950011299B1 (en
Inventor
이현식
Original Assignee
이헌조
주식회사 금성사
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 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019930012488A priority Critical patent/KR950011299B1/en
Publication of KR950004673A publication Critical patent/KR950004673A/en
Application granted granted Critical
Publication of KR950011299B1 publication Critical patent/KR950011299B1/en

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Classifications

    • 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
    • H02H3/24—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 undervoltage or no-voltage
    • H02H3/243—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 undervoltage or no-voltage for DC systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output

Landscapes

  • Rectifiers (AREA)
  • Dc-Dc Converters (AREA)

Abstract

본 발명은 부하가 저전압으로 운전되었을때 발생되는 부하 및 부하를 제어하는 회로의 손상을 방지하기 위한것이다.The present invention is to prevent damage to the load and the circuit controlling the load generated when the load is operated at a low voltage.

종래에는 이와같은 보호회로가 없어 손상을 입었다.In the prior art, such a protection circuit was not damaged.

이와같은 목적을 달성하기 위한 본 발명은 외부교류전원을 입력받아 직류전압으로 출력하는 정류 및 평활부와, 정류 및 평활부에 직류전원을 부하가 운전할수 있도록 교류전원으로 바꾸어 부하가 인가하는 전력 트랜지스터부와 부하의 운전을 제어하는 마이콤과 마이콤의 제어신호에 의해 상기 전력 트랜지스터부를 구동하는 드라이버부와 상기 정류 및 평활부의 출력전압이 일정전압 이하임을 체크하여 부하가 구동되지 않도록 하기 위한 출력 전압 체크부로 이루어진다.In order to achieve the above object, the present invention provides a rectifying and smoothing unit that receives an external AC power and outputs the DC voltage, and a power transistor to which the load is applied by converting the DC power into an AC power so that the load can operate the rectifying and smoothing unit. Output voltage checker for checking the output voltage of the driver unit and the rectifying and smoothing unit to drive the power transistor unit below the predetermined voltage according to the control signals of the microcomputer and the microcomputer controlling the operation of the unit and the load to prevent the load from being driven. Is done.

Description

저전압 인가시 부하보호회로Load protection circuit when low voltage is applied

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명의 저전압 인가시 부하보호회로 구성도, 제4도는 본 발명에 의한 일정전압 이상이 입력될 경우의 전류흐름도, 제5도는 본 발명에 대한 입력전압이 일정전압 이하일 경우의 전류흐름도.3 is a block diagram of the load protection circuit when the low voltage of the present invention is applied, FIG. 4 is a current flow diagram when a predetermined voltage or more is input according to the present invention, and FIG. 5 is a flow diagram of a current flow when the input voltage for the present invention is below a certain voltage. .

Claims (1)

외부의 교류전압을 직류전압으로 출력하는 정류 및 평활부(1)와, 정류 및 평활부(1)의 직류전압을 부하(5)에 교류전압 형태로 인가하는 전력 트랜지스터부(2)와, 상기 정류 및 평활부(1)의 출력이 일정전압 이하임을 체크하는 출력전압 체크부(6)와, 상기 전력 트랜지스터부(2)가 직류전압을 교류전압형태로 인가할 수 있도록 전력 트랜지스터부(2)를 구동하는 드라이버부(4)와, 상기 출력전압 체크부(6)의 신호를 입력받아 정류 및 평활부(1)의 출력이 일정전압 이하이면 부하의 운전을 정지하도록 드라이버부(4)에 제어신호를 출력하고 일정전압 이상이면 정상적으로 운전되도록 제어신호를 출력하는 마이콤(3)을 포함하여 구성됨을 특징으로 하는 저전압 인가시 부하보호회로.A rectification and smoothing unit 1 for outputting an external AC voltage as a DC voltage, a power transistor unit 2 for applying a DC voltage of the rectifying and smoothing unit 1 to the load 5 in an AC voltage form, and An output voltage check unit 6 for checking that the output of the rectifying and smoothing unit 1 is equal to or less than a predetermined voltage, and the power transistor unit 2 so that the power transistor unit 2 can apply a DC voltage in the form of an AC voltage. The driver unit 4 for driving the control unit and the driver unit 4 to stop the operation of the load when the output of the rectifying and smoothing unit 1 receives a signal from the output voltage check unit 6 and is below a predetermined voltage. And a microcomputer (3) for outputting a signal and outputting a control signal to operate normally when a predetermined voltage or more is applied. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930012488A 1993-07-03 1993-07-03 Load protect circuit KR950011299B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930012488A KR950011299B1 (en) 1993-07-03 1993-07-03 Load protect circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930012488A KR950011299B1 (en) 1993-07-03 1993-07-03 Load protect circuit

Publications (2)

Publication Number Publication Date
KR950004673A true KR950004673A (en) 1995-02-18
KR950011299B1 KR950011299B1 (en) 1995-09-30

Family

ID=19358690

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930012488A KR950011299B1 (en) 1993-07-03 1993-07-03 Load protect circuit

Country Status (1)

Country Link
KR (1) KR950011299B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487444B1 (en) * 2001-10-12 2005-05-04 삼성중공업 주식회사 On board insulation method of prismatic type LPG cargo tank
KR101042107B1 (en) * 2009-06-24 2011-06-16 에스케이에너지 주식회사 The structure for insulation of storage tank and its construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487444B1 (en) * 2001-10-12 2005-05-04 삼성중공업 주식회사 On board insulation method of prismatic type LPG cargo tank
KR101042107B1 (en) * 2009-06-24 2011-06-16 에스케이에너지 주식회사 The structure for insulation of storage tank and its construction method

Also Published As

Publication number Publication date
KR950011299B1 (en) 1995-09-30

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