KR0121104Y1

KR0121104Y1 - Degaussing circuit

Info

Publication number: KR0121104Y1
Application number: KR2019940019580U
Authority: KR
Inventors: 최창식
Original assignee: 엄길용; 오리온전기주식회사
Priority date: 1994-07-29
Filing date: 1994-07-29
Publication date: 1998-08-17
Also published as: KR960006279U

Abstract

본 고안은 소자회로를 개시한다. 칼라음극선관의 정상 동작중에 음극선관이 자화되었을 경우 전원 스위치를 개폐하지 않고, 소자 스위치(S1)를 이용하여 소자시키는 소자회로에 관해 기술된다.The present invention discloses a device circuit. A device circuit is described in which a device is made using the device switch S1 without opening or closing the power switch when the cathode ray tube is magnetized during the normal operation of the color cathode ray tube.

Description

Device circuit

도 1은 본 고안에 따른 소자 회로도.1 is a device circuit diagram according to the present invention.

*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1:써미스터(Thermistor) 2:소자코일(Degaussing Coil)1: Thermistor 2: Degaussing Coil

3:트라이액(Triac) 4:써지(surge) 회로3: Triac 4: surge circuit

5:포토 사이리스터 커플러 6:제어부5: Photo thyristor coupler 6: Control unit

7:페루프 회로 S1:소자 스위치7: Per loop circuit S1: element switch

Q1 및 Q2:트랜지스터Q1 and Q2: Transistor

본 고안은 컬러 음극선관에 사용되는 소자회로에 관한 것이다.The present invention relates to a device circuit used in the color cathode ray tube.

일반적으로, 음극선관이 자화되었을 경우, 이를 소자시키기 위해 파워스위치를 온(on)시키면 서미스터(Thermistor)를 경유해 소자코일에 소자 전류가 공급되어 소자된다. 그러나 써미스터가 부하를 받아 가열되면 소자전류는 크게 감소되어 소자되지 않는다. 그러므로 종래에는 컬러음극선관의 전원스위치를 오프(off)시키고, 일정한 시간이 경과한 후에 다시 전원스위치를 온 시켜 소자동작을 진행시켰으나 시간이 많이 소요되는 단점이 있다.In general, when the cathode ray tube is magnetized, when the power switch is turned on to device the device, the device current is supplied to the device coil through the thermistor to be device. However, when the thermistor is loaded and heated, the device current is greatly reduced and the device is not. Therefore, in the related art, the power switch of the color cathode ray tube is turned off and the device is operated by turning on the power switch again after a certain time has elapsed, but it takes a long time.

따라서 본 고안은 음극선관이 자화되었을 경우, 컬러음극선관의 전원스위치를 개폐하지 않고, 소자할 수 있는 소자회로를 제공하는데 그 목적이 있다.Accordingly, an object of the present invention is to provide an element circuit which can be used without opening and closing a power switch of a color cathode ray tube when the cathode ray tube is magnetized.

상술한 목적을 달성하기 위한 본 고안은 소자 스위치(S1)의 스위칭 동작에 따라 일정한 폭의 제어회로가 생성되는 제어부(6)와, 제어부(6)로부터의 제어신호에 의해 작동되는 포토 싸이리스터 커플러(5)와, 포토 싸이리스터 커플러(5)의 동작에 따라 써미스터(1)에 공급되는 전원(AC)을 우회시켜 폐회로가 이루어지도록 한 폐루프회로(7)로 구성되는 소자회로를 제공한다.The present invention for achieving the above object is a control unit 6 is a control circuit of a constant width is generated according to the switching operation of the element switch (S1), and a photo thyristor coupler operated by a control signal from the control unit 6 (5) and a closed loop circuit (7) configured to bypass a power source (AC) supplied to the thermistor (1) in accordance with the operation of the photothyristor coupler (5) so that a closed loop is achieved.

본 고안에 의하면, 음극선관이 자화되었을 경우, 소자회로의 전원스위치를 개폐 시키는 번거로움이 해소될 수 있다.According to the present invention, when the cathode ray tube is magnetized, the trouble of opening and closing the power switch of the device circuit can be eliminated.

이하, 첨부된 도면을 참조하여 본 고안의 실시예를 설명하기로 한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

첨부된 도면은 본 고안에 따른 소자 회로도이다.The accompanying drawings are device circuit diagrams according to the present invention.

컬러음극선관의 정상동작중에 음극선관이 자화되었을 경우 제어부(6)의 소자 스위치(S1)를 온시키면, Vcc 전원으로부터 다이오드(D1) 및 저항(R9)을 통해 콘덴서(C4)에 충전된 전압이 소자 스위치(S1)를 통해 방전된다. 이후 콘덴서(C4)에 충전되는 시간동안 트랜지스터(Q2)가 온되고, 저항(R6)을 통해 콘덴서(C3)에 충전되어 있던 전압이 저항(R7) 및 트랜지스터(Q2)를 통해 접지로 방전된다. 그러므로 제너다이오드(Z1) 및 저항(R5)이 직렬로 접속된 트랜지스터(Q1)의 베이스 전위가 저 전위가 되어 트랜지스터(Q1)가 온 되므로, Vcc 전원이 트랜지스터(Q1) 및 저항(R3)을 통해 포토 싸이리스터 커플러(5)를 작동시킨다.When the cathode ray tube is magnetized during the normal operation of the color cathode ray tube, when the element switch S1 of the control unit 6 is turned on, the voltage charged to the capacitor C4 through the diode D1 and the resistor R9 from the Vcc power supply is reduced. Discharged through the element switch S1. Thereafter, the transistor Q2 is turned on during the charging time of the capacitor C4, and the voltage charged in the capacitor C3 through the resistor R6 is discharged to the ground through the resistor R7 and the transistor Q2. Therefore, since the base potential of the transistor Q1 in which the zener diode Z1 and the resistor R5 are connected in series becomes a low potential, the transistor Q1 is turned on, so that the Vcc power source is supplied through the transistor Q1 and the resistor R3. Activate the photo thyristor coupler (5).

따라서 전원(AC)으로부터 저항(R2)을 통해 공급되는 전원이 포토 싸이리스터 커플러(5)를 통해 트라이액(3)의 게이트단자(G)에 공급되어 구동되므로 써미스터(1)로 공급되던 전원(AC)이 폐루프회로(7)측으로 우회된다.Therefore, the power supplied from the power source AC through the resistor R2 is supplied to and driven by the gate terminal G of the triac 3 through the photo thyristor coupler 5, thereby supplying power to the thermistor 1 ( AC) is bypassed to the closed loop circuit 7 side.

이후, 콘덴서(C4)의 충전동작이 완료되는 동시에 트랜지스터(Q2 및 Q1) 및 포토 싸이리스터 커플러(5)가 순차적으로 오프되어 트라이액(3)이 차단되므로, 폐루프회로(7)로 공급되던 전원(AC)은 다시 써미스터(1)로 공급되어 정상적인 소자동작을 실시한다.Thereafter, the charging operation of the capacitor C4 is completed, and the transistors Q2 and Q1 and the photo thyristor coupler 5 are sequentially turned off so that the triac 3 is cut off, so that the supplied to the closed loop circuit 7 is supplied. The power source AC is again supplied to the thermistor 1 to perform normal device operation.

한편, 설명되지 않은 저항(R8 및 R10)은 콘덴서(C3 및 C4)의 방전 경로를 제공하고, 콘덴서(C2)와 저항(R4)은 포토 싸이리스터 커플러(5)의 써지전압의 방지를 위해 사용된다.On the other hand, the resistors R8 and R10 which are not described provide the discharge paths of the capacitors C3 and C4, and the capacitors C2 and R4 are used for the prevention of the surge voltage of the photothyristor coupler 5. do.

본 고안의 특정한 실시예를 중심으로 설명되었지만 본 실시예에 한정되지 않고 다음의 청구범위에 의해서만 한정된다.Although described with respect to specific embodiments of the present invention, it is not limited to this embodiment but only by the following claims.

Claims

In a device circuit comprising a thermistor 1 and a device coil 2 operated by a power source AC, a control unit 6 for generating a control signal of a predetermined width in accordance with the switching operation of the device switch S1, and The photo thyristor coupler 5 operated by the control signal from the control unit 6 and the power supply AC supplied to the thermistor 1 in accordance with the operation of the photo thyristor coupler 5 bypass the closed circuit. Device circuit, characterized in that consisting of a closed loop circuit (7) to be made.

2. The control unit (6) according to claim 1, wherein the controller (6) is turned on in response to the operation of the transistor (Q2) and the transistor (Q2), which is turned on during the time charged in the capacitor (C4), and the Vcc power supply is used as a photothyristor coupler. A device circuit comprising a transistor (Q1) for supplying to (5).

2. The closed loop circuit (7) according to claim 1, wherein the closed loop circuit (7) includes a capacitor (C1) and a resistor (R1) connected in series between any one terminal of the power source (AC) and the thermistor (1), and the resistor (R1) and the It is connected from the connection point between any one terminal of the thermistor 1, and is connected between the triac 3 driven by the signal of the photo thyristor coupler 5, and between the triac 3 and the power supply AC. A device circuit comprising a surge circuit (4).

The device circuit according to claim 1, wherein the surge circuit (4) is constituted by a resistor (R) and a capacitor (C).