KR950034893A - Power Protection Circuit for L.B.B. of Satellite Broadcasting Receiver - Google Patents

Power Protection Circuit for L.B.B. of Satellite Broadcasting Receiver Download PDF

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Publication number
KR950034893A
KR950034893A KR1019940012052A KR19940012052A KR950034893A KR 950034893 A KR950034893 A KR 950034893A KR 1019940012052 A KR1019940012052 A KR 1019940012052A KR 19940012052 A KR19940012052 A KR 19940012052A KR 950034893 A KR950034893 A KR 950034893A
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KR
South Korea
Prior art keywords
power
load
input
overcurrent
satellite broadcasting
Prior art date
Application number
KR1019940012052A
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Korean (ko)
Other versions
KR970000787B1 (en
Inventor
허득현
Original Assignee
배순훈
대우전자 주식회사
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Priority to KR1019940012052A priority Critical patent/KR970000787B1/en
Publication of KR950034893A publication Critical patent/KR950034893A/en
Application granted granted Critical
Publication of KR970000787B1 publication Critical patent/KR970000787B1/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
    • H02H3/08—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

본 발명은 위성방송수신기의 LNB용전원보호회로에 관한 것으로서, 외부전원조정단자로 전원이 입력되면 부하에 입력전원을 공급하고 상기 부하의 단락 및 과전류시 상기 입력전원을 차단하는 출력전원제어부와, 상기 부하의 단락 및 과전류 상태일때를 검지하여 상기 입력전원이 차단되도록 해주는 부하단락 및 과전류검지부와, 상기 부하단락 및 과전류검지부에서 출력하는 검지신호를 수신하여 새로운 입력신호가 발생할때 까지 기억하여 주는 검지논리저장부를 포함하고 이루어져, 위성방송용수신기의 전원단에 과부하상태가 발생하지 않으므로 과열 및 과전류상태를 없앨 수 있어 위성방송용수신기의 전원단에 무리가 가지 않고 또한, 정확하게 단락 및 과전류상태를 검지할수 있으므로 부품의 파괴 및 수명단축을 방지할수 있도록 한것이다.The present invention relates to a power protection circuit for an LNB of a satellite broadcasting receiver, wherein an output power control unit supplies an input power to a load when the power is input to an external power adjustment terminal, and cuts off the input power when the load is short-circuited and overcurrent, Detect the load short circuit and over current detector that detects when the load is short and over current, and cuts off the input power, and receives the detection signal output from the load short and over current detector, and stores them until a new input signal is generated. It is composed of a logic storage unit, so that the overload and overcurrent state does not occur at the power stage of the satellite broadcasting receiver, so that the overheating and overcurrent states can be eliminated, so that the power terminal of the satellite broadcasting receiver can be avoided and the short circuit and overcurrent states can be detected accurately. It is to prevent the destruction of parts and shorten the life.

Description

위성방송수신기의 엘.엔.비.용 전원 보호회로Power Protection Circuit for L.B.B. of Satellite Broadcasting Receiver

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

본 도면은 본 발명에 따른 위성방송수신기의 LNB용전원보호 회로의 일실시예를 나타낸 회로도.Fig. 1 is a circuit diagram showing an embodiment of a power protection circuit for an LNB of a satellite broadcasting receiver according to the present invention.

Claims (3)

외부전원조정단자로 전원이 입력되면 부하에 입력전원을 공급하고 상기 부하의 단락 및 과전류시 상기 입력전원을 차단하는 출력전원 제어부와; 상기 부하의 단락 및 과전류 상태일때를 검지하여 상기 입력 전원이 차단되도록 해주는 부하단락 및 과전류검지부와; 상기 부하단락 및 과전류검지부에서 출력하는 검지신호를 수신하여 새로운 입력신호가 발생할 때 까지 기억하여 주는 검지논리저장부를 포함하는 위성방송수신기의 LNB용 전원보호회로.An output power control unit for supplying input power to a load when the power is input to an external power adjusting terminal and cutting off the input power when the load is short-circuited and overcurrent; A load short circuit and an over current detector for detecting a short circuit and an over current state of the load to cut off the input power; And a detection logic storage unit which receives a detection signal output from the load short circuit and the overcurrent detection unit and stores the detected signal until a new input signal is generated. 제1항에 있어서, 상기 검지논리저장부는 2개의 트랜지스터, 1개의 다이오드 4개의 저항 및 논리기억용전원으로 구성된 것을 특징으로 하는 위성방송수신기의 LNB용전원보호회로.The power supply protection circuit for a LNB of claim 1, wherein the detection logic storage unit comprises two transistors, one diode, four resistors, and a logic memory power supply. 제1항에 있어서, 상기 검지논리저장부는 상기 부하단락 및 과전류검지부에서 검지된 신호를 상기 논리기억용전원이 ‘오프’될 때까지 기억하는 것을 특징으로 하는 위성방송수신기의 LNB용 전원보호회로.2. The power protection circuit for an LNB of claim 1, wherein the detection logic storage unit stores the signal detected by the load short circuit and the overcurrent detection unit until the logic storage power is 'off'. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940012052A 1994-05-31 1994-05-31 Power circuit for lnb KR970000787B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940012052A KR970000787B1 (en) 1994-05-31 1994-05-31 Power circuit for lnb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940012052A KR970000787B1 (en) 1994-05-31 1994-05-31 Power circuit for lnb

Publications (2)

Publication Number Publication Date
KR950034893A true KR950034893A (en) 1995-12-28
KR970000787B1 KR970000787B1 (en) 1997-01-20

Family

ID=19384247

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940012052A KR970000787B1 (en) 1994-05-31 1994-05-31 Power circuit for lnb

Country Status (1)

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KR (1) KR970000787B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100723196B1 (en) * 2005-07-04 2007-05-29 삼성전기주식회사 Satellite digital broadcasting receiver with prevention from over temperature
KR101641504B1 (en) * 2014-04-09 2016-07-21 주식회사 동성씨앤티 Public address system providing power saving function and speaker protecting function concurrently and power saving circuit used therein

Also Published As

Publication number Publication date
KR970000787B1 (en) 1997-01-20

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