KR970024852A - TV's horizontal output transistor protection circuit - Google Patents

TV's horizontal output transistor protection circuit Download PDF

Info

Publication number
KR970024852A
KR970024852A KR1019950038295A KR19950038295A KR970024852A KR 970024852 A KR970024852 A KR 970024852A KR 1019950038295 A KR1019950038295 A KR 1019950038295A KR 19950038295 A KR19950038295 A KR 19950038295A KR 970024852 A KR970024852 A KR 970024852A
Authority
KR
South Korea
Prior art keywords
output transistor
horizontal
power
horizontal output
protection circuit
Prior art date
Application number
KR1019950038295A
Other languages
Korean (ko)
Inventor
박상열
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 KR1019950038295A priority Critical patent/KR970024852A/en
Publication of KR970024852A publication Critical patent/KR970024852A/en

Links

Abstract

본 발명은 고압 트랜스(FBT)의 이상시 수평출력 트랜지스터에 과전류가 흘러 발생하는 수평출력 트랜지스터의 파손을 방지하도록 한 티브이의 수평출력 트랜지스터 보호회로에 관한 것이다.The present invention relates to a horizontal output transistor protection circuit of a TV to prevent damage to the horizontal output transistor caused by an overcurrent flow to the horizontal output transistor in the event of an abnormal high voltage transformer (FBT).

이를 달성하기 위해 본 발명은, 수평 편향부내의 수평출력 트랜지스터로 흐르는 전류와 기준 전류를 비교하고 그 결과치를 출력하는 비교부와, 비교부에서 출력되는 신호로 과전류의 유무를 판단하고 과전류시 전원 오프신호를 발생시키는 마이콤과, 마이콤에서 출력되는 전원 오프신호에 따라 수평 편향부 및 플라이백 트랜스에 공급되는 전원을 차단시키는 전원 제어부를 구비한다.In order to achieve this, the present invention is to compare the current flowing to the horizontal output transistor in the horizontal deflection unit and the reference current and a comparison unit for outputting the result value, the signal output from the comparison unit to determine the presence of overcurrent and to turn off the power when overcurrent A microcomputer for generating a signal, and a power control unit for cutting off the power supplied to the horizontal deflection unit and the flyback transformer in accordance with the power off signal output from the microcomputer.

Description

티브이의 수평출력 트랜지스터 보호회로TV's horizontal output transistor protection circuit

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

제1도는 종래 티브이의 수평 출력 회로도.1 is a horizontal output circuit diagram of a conventional TV.

제2도는 본 발명에 의한 티이브의 수평출력 트랜지스터 보호회로도.2 is a horizontal output transistor protection circuit diagram of a teave according to the present invention.

제3도는 본 발명에서 과전류 판단을 위한 파형도.3 is a waveform diagram for determining the overcurrent in the present invention.

Claims (1)

수평 편향부(2)내의 수평출력 트랜지스터(Q2)로 흐르는 전류와 기준전류를 비교하고 그 결과치를 출력하는 비교부(4)와, 상기 비교부(4)에서 출력되는 신호로 과전류의 유무를 판단하고 과전류시 전원 오프신호를 발생시키는 마이콤(5)과, 상기 마이콤(5)에서 출력되는 전원 오프신호에 따라 수평 편향 및 플라이백 트랜스에 공급되는 전원을 차단시키는 전원 제어부(6)를 포함하여 구성된 것을 특징으로 하는 티브이의 수평출력 트랜지스터 보호회로.The comparison unit 4 compares the current flowing through the horizontal output transistor Q2 in the horizontal deflection unit 2 with the reference current, and outputs the result, and determines whether there is an overcurrent using the signal output from the comparison unit 4. And a power supply control unit 6 for cutting off the power supplied to the horizontal deflection and the flyback transformer according to the power-off signal output from the microcomputer 5, and generating a power-off signal when the over-current. The horizontal output transistor protection circuit of the TV. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950038295A 1995-10-31 1995-10-31 TV's horizontal output transistor protection circuit KR970024852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950038295A KR970024852A (en) 1995-10-31 1995-10-31 TV's horizontal output transistor protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950038295A KR970024852A (en) 1995-10-31 1995-10-31 TV's horizontal output transistor protection circuit

Publications (1)

Publication Number Publication Date
KR970024852A true KR970024852A (en) 1997-05-30

Family

ID=66584855

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950038295A KR970024852A (en) 1995-10-31 1995-10-31 TV's horizontal output transistor protection circuit

Country Status (1)

Country Link
KR (1) KR970024852A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100476870B1 (en) * 1997-09-24 2005-07-05 삼성전자주식회사 Initializing signal generating circuit for control register

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100476870B1 (en) * 1997-09-24 2005-07-05 삼성전자주식회사 Initializing signal generating circuit for control register

Similar Documents

Publication Publication Date Title
KR970031203A (en) Switching Power Supply
WO1998049765A3 (en) Overvoltage protection circuit for smps based on demagnetization signal
US5771162A (en) Electric protective device used in switching mode power supply systems
US6449180B1 (en) World wide power supply apparatus that includes a relay switch voltage doubling circuit
KR970024852A (en) TV's horizontal output transistor protection circuit
KR850008592A (en) Protective circuit for video display device
FI112991B (en) Chopper Power Basement Arrangements
DE59807260D1 (en) FAULT CURRENT PROTECTION DEVICE
KR930004325Y1 (en) High-tension production circuit for dust collector
KR100265668B1 (en) A circuit for detecting over-current in inverter
KR960009682A (en) Horizontal output transistor protection circuit
KR960009596A (en) Horizontal output transistor protection circuit
KR950016287A (en) Power stage protection circuit of TV receiver
KR960036572A (en) TV's short protector
KR910005625Y1 (en) Over current protective circuit
KR910004773Y1 (en) Over voltage protective circuit
KR910001017Y1 (en) High voltage stabilization circuit
KR960003508A (en) Energy-Saving Switching Mode Power Supplies for Neon and Argon Tubes
KR970031139A (en) Power supply circuit
KR960028351A (en) TV power supply control device
KR960028352A (en) Over current inflow prevention circuit
KR960028142A (en) FBT's overload protection circuit
KR960001957A (en) High Voltage Generation Circuit of Monitor
KR950010495A (en) Overcurrent Protection Device for Television Receiver
KR950010266A (en) Inverter overcurrent protection circuit

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination