KR970022915A - Relay drive circuit of monitor - Google Patents

Relay drive circuit of monitor Download PDF

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Publication number
KR970022915A
KR970022915A KR1019950038911A KR19950038911A KR970022915A KR 970022915 A KR970022915 A KR 970022915A KR 1019950038911 A KR1019950038911 A KR 1019950038911A KR 19950038911 A KR19950038911 A KR 19950038911A KR 970022915 A KR970022915 A KR 970022915A
Authority
KR
South Korea
Prior art keywords
relay
relay drive
monitor
reverse current
diode
Prior art date
Application number
KR1019950038911A
Other languages
Korean (ko)
Inventor
이연철
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 KR1019950038911A priority Critical patent/KR970022915A/en
Publication of KR970022915A publication Critical patent/KR970022915A/en

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Abstract

본 발명은 모니터의 릴레이 구동회로에 관한 것으로, 릴레이 구동 신호에 따라 온/오프되는 릴레이구동트랜지스터(Q1)가 턴 오프되는 순간에 다이오드(D1)을 통해 흐르는 역전류를 방지하기 위한 역전류방지 수단(20)이 추가로 구비되어, 릴레이의 채터링 현상을 방지하여 릴레이의 신뢰성을 향상시킬 수 있는 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay driving circuit of a monitor, wherein a reverse current preventing means for preventing reverse current flowing through a diode D1 at the moment when a relay driving transistor Q1 turned on / off in response to a relay driving signal is turned off. 20 is further provided to prevent chattering of the relay, thereby improving reliability of the relay.

Description

모니터의 릴레이 구동회로Relay drive circuit of monitor

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

제2도는 본 발명에 따른 모니터의 릴레이 구동회로의 회로도이다.2 is a circuit diagram of a relay driving circuit of a monitor according to the present invention.

Claims (3)

릴레이 구동신호에 따라 온/오프되는 릴레이구동트랜지스터(Q1)와 상기 릴레이구동트랜지스터(Q1)의 온/오프에 따라 릴레이 접점을 연결 또는 차단시켜 용량성, 유도성 부하(10)의 파라메터를 변경시키는 릴레이(12) 및, 상기 릴레이(12)에 과전류가 흐르는 것을 방지하는 다이오드(D1)을 포함하여 구성된 모니터의 릴레이 구동회로에 있어서, 상기 릴레이구동트랜지스터(Q1)가 턴 오프되는 순간에 다이오드(D1)을 통해 흐르는 역전류를 방지하기 위한 역전류방지수단(20)이 추가로 구비된 것을 특징으로 하는 모니터의 릴레이 구동회로.By connecting or disconnecting the relay contact according to the on / off of the relay drive transistor (Q1) and the relay drive transistor (Q1) on / off according to the relay drive signal to change the parameters of the capacitive, inductive load (10) In a relay driving circuit of a monitor comprising a relay 12 and a diode D1 for preventing an overcurrent from flowing in the relay 12, the diode D1 at the moment the relay driving transistor Q1 is turned off. The relay drive circuit of the monitor, characterized in that the reverse current preventing means 20 for preventing the reverse current flowing through the additionally provided. 제1항에 있어서, 상기 역전류방지수단(20)은 상기 다이오드(D1)을 통해 흐르는 역전류가 전원(Vcc)쪽으로 인가되는 것을 방지하기 위한 다이오드(D2)와, 상기 릴레이구동트랜지스터(Q1)가 턴 오프되었을 때 상기 릴레이(12)로 전류를 공급하는 캐패시터(C1)을 포함하여 구성된 것을 특징으로 하는 모니터의 릴레이 구동회로.According to claim 1, wherein the reverse current preventing means 20 is a diode (D2) for preventing the reverse current flowing through the diode (D1) to the power supply (Vcc) and the relay drive transistor (Q1) And a capacitor (C1) for supplying current to the relay (12) when it is turned off. 제1항에 있어서, 상기 릴레이구동트랜지스터(Q1)으로 인가되는 릴레이 구동신호의 노이즈를 제거하는 캐패시터(C2)가 추가로 구비된 것을 특징으로 하는 모니터의 릴레이 구동회로.2. The relay drive circuit as set forth in claim 1, further comprising a capacitor (C2) for removing noise of the relay drive signal applied to said relay drive transistor (Q1). ※ 참고사항; 최초출원 내용에 의하여 공개하는 것임.※ Note; Disclosure based on original application.
KR1019950038911A 1995-10-31 1995-10-31 Relay drive circuit of monitor KR970022915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950038911A KR970022915A (en) 1995-10-31 1995-10-31 Relay drive circuit of monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950038911A KR970022915A (en) 1995-10-31 1995-10-31 Relay drive circuit of monitor

Publications (1)

Publication Number Publication Date
KR970022915A true KR970022915A (en) 1997-05-30

Family

ID=66584348

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950038911A KR970022915A (en) 1995-10-31 1995-10-31 Relay drive circuit of monitor

Country Status (1)

Country Link
KR (1) KR970022915A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020008862A (en) * 2000-07-20 2002-02-01 박태진 Power saving circuit when driving relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020008862A (en) * 2000-07-20 2002-02-01 박태진 Power saving circuit when driving relay

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E902 Notification of reason for refusal
E601 Decision to refuse application