KR970025061A - Switching Power Compensation Circuit of Composite Video Equipment - Google Patents

Switching Power Compensation Circuit of Composite Video Equipment Download PDF

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Publication number
KR970025061A
KR970025061A KR1019950039509A KR19950039509A KR970025061A KR 970025061 A KR970025061 A KR 970025061A KR 1019950039509 A KR1019950039509 A KR 1019950039509A KR 19950039509 A KR19950039509 A KR 19950039509A KR 970025061 A KR970025061 A KR 970025061A
Authority
KR
South Korea
Prior art keywords
voltage
switching mode
output
unit
composite video
Prior art date
Application number
KR1019950039509A
Other languages
Korean (ko)
Inventor
노관형
Original Assignee
배순훈
대우전자 주식회사
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 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950039509A priority Critical patent/KR970025061A/en
Publication of KR970025061A publication Critical patent/KR970025061A/en

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  • Television Receiver Circuits (AREA)
  • Dc-Dc Converters (AREA)

Abstract

본 발명은 부하변동이 많은 복합영상기기에 있어서, 부하변동이 있을때마다 이를 감지하여 자동으로 입력전압비를 제어해 주는 스위칭 전원의 회로에 관한 것이다.The present invention relates to a circuit of a switching power supply that detects a load variation and automatically controls an input voltage ratio in a composite video apparatus having a large load variation.

본 발명에 의하면 부하변동이 생길때 마다 이를 릴레이 및 트랜지스터가 감지하여 미리 설정된 전압과 비교하여 그 차이값을 스위칭 모드 전원 공급회로에 알리기 때문에 입력전압의 세기를 조절 할 수 있다.According to the present invention, whenever the load fluctuation occurs, the relay and the transistor detects it and compares it with a preset voltage and informs the switching mode power supply circuit of the input voltage, thereby adjusting the strength of the input voltage.

따라서, 방송모드변동에 따라 발행하는 변동에 따라 전압변동을 신속히 제어할 수 있는 것이다.Therefore, it is possible to quickly control the voltage fluctuation according to the fluctuation issued by the broadcast mode fluctuation.

Description

복합영상기기의 스위칭 전원 보상회로Switching Power Compensation Circuit of Composite Video Equipment

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래의 스위칭전원 보상회로,1 is a conventional switching power supply compensation circuit;

제2도는 본 발명에 따른 스위칭 전원 보상회로2 is a switching power supply compensation circuit according to the present invention.

Claims (1)

입력되는 교류전압을 펄스폭의 레벨값에 따라 이에 상응하는 직류 전압으로 변환하여 출력하는 스위칭모드전압변화부, 상기 스위칭 모드전압변환부에서 출력되는 직류 전압의 세기를 제어하는 제1전압변환부, 상기 제1전압변환부에 인가된 전압 신호에 대응하는 변환된 전압을 출력하기 위한 제2전압변환부, 상기 제2 전압변부의 출력측에 연결되어, 상기 제2전압변환부에서 출력되는 전압레벨값과 미리 설정된 전압레벨값을 비교하여, 그 전압차이값을 상기 스위칭 모드전압변환부로 출력하는 오차검출부, 상기 오차검출부와 상기 스위칭 모드전압변환부의 사이에 연결되어, 상기 제2전압변환부의 출력에 일정레벨범위를 벗어나는 부하가 발생했을때, 상기 오차검출부에서 상기 스위칭 모드전압변환부로 출력하는 전압 차이값을 제어하는 전압오차 제어부로 구성된 것을 특징으로 하는 복합 영상기기의 스위칭 전원 보상회로.A switching mode voltage changing unit for converting an input AC voltage into a DC voltage corresponding to the pulse width level value, and outputting the DC voltage corresponding to the pulse width level, a first voltage converting unit controlling the strength of the DC voltage output from the switching mode voltage converting unit; A second voltage converter for outputting a converted voltage corresponding to the voltage signal applied to the first voltage converter, a voltage level value connected to an output side of the second voltage converter, and output from the second voltage converter And an error detection unit for comparing the predetermined voltage level value and outputting the voltage difference value to the switching mode voltage conversion unit, connected between the error detection unit and the switching mode voltage conversion unit, and fixed to the output of the second voltage conversion unit. Voltage error that controls the voltage difference value output from the error detection unit to the switching mode voltage conversion unit when a load out of the level range occurs. Switching power supply compensation circuit of the composite video apparatus according to claim consisting of the fisherman.
KR1019950039509A 1995-10-31 1995-10-31 Switching Power Compensation Circuit of Composite Video Equipment KR970025061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950039509A KR970025061A (en) 1995-10-31 1995-10-31 Switching Power Compensation Circuit of Composite Video Equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950039509A KR970025061A (en) 1995-10-31 1995-10-31 Switching Power Compensation Circuit of Composite Video Equipment

Publications (1)

Publication Number Publication Date
KR970025061A true KR970025061A (en) 1997-05-30

Family

ID=66586974

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950039509A KR970025061A (en) 1995-10-31 1995-10-31 Switching Power Compensation Circuit of Composite Video Equipment

Country Status (1)

Country Link
KR (1) KR970025061A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100593929B1 (en) * 2004-11-03 2006-06-30 삼성전기주식회사 Switch mode power supply having auto voltage regulation function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100593929B1 (en) * 2004-11-03 2006-06-30 삼성전기주식회사 Switch mode power supply having auto voltage regulation function

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E902 Notification of reason for refusal
E601 Decision to refuse application