KR910008273Y1 - Horizontal output control circuit - Google Patents

Horizontal output control circuit Download PDF

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Publication number
KR910008273Y1
KR910008273Y1 KR2019850010802U KR850010802U KR910008273Y1 KR 910008273 Y1 KR910008273 Y1 KR 910008273Y1 KR 2019850010802 U KR2019850010802 U KR 2019850010802U KR 850010802 U KR850010802 U KR 850010802U KR 910008273 Y1 KR910008273 Y1 KR 910008273Y1
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South Korea
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capacitor
horizontal output
diode
control circuit
horizontal
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KR2019850010802U
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Korean (ko)
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KR870004458U (en
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윤부근
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삼성전자 주식회사
정재은
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

내용 없음.No content.

Description

수평출력 제어회로Horizontal output control circuit

제1도는 본 고안이 적용된 수평출력회로의 전체회로도.1 is an overall circuit diagram of a horizontal output circuit to which the present invention is applied.

제2도는 종래의 수평출력회로의 등가 회로도.2 is an equivalent circuit diagram of a conventional horizontal output circuit.

제3도는 제1도의 수평출력회로의 등가 회로도.3 is an equivalent circuit diagram of the horizontal output circuit of FIG.

제4도는 제1도의 수평편향코일에 흐르는 편형전류파형도.4 is a diagram showing the polarization current waveform flowing in the horizontal deflection coil of FIG.

제5a도, 제5b도는 브라운관 화면에서 밝은 부분의 영상이 휘어지는 형태 및 그의 원인이 되는 브라운관내의 전자비임의 궤적을 나타내는 도면이다.FIG. 5A and FIG. 5B are diagrams showing the shape of the image of the bright part bent on the CRT screen and the trajectory of the electron beam in the CRT which is the cause thereof.

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

DF : 편향코일 TR : 수평출력트랜지스터DF: Deflection coil TR: Horizontal output transistor

C1, C2, C3: 콘덴서 D1, D2: 다이오드C 1 , C 2 , C 3 : condenser D 1 , D 2 : diode

본 고안은 텔레비젼 수상기나 모니터 등의 화면에 비교적 넓은 범위로 밝은 부분이 계속될 경우 화면의 수직선이 양측으로 휘어지는 현상은 제거시키기 위한 수평출력제어회로에 관한 것이다.The present invention relates to a horizontal output control circuit for eliminating the phenomenon that the vertical line of the screen is bent to both sides when the bright portion continues to a relatively wide range on the screen such as a television receiver or a monitor.

종래의 수평출력회로의 등가회로도는 제2도에 도시되어 있다.An equivalent circuit diagram of a conventional horizontal output circuit is shown in FIG.

제2도에 도시된 바와 같이, 수평 공진기간에 편향코일(DF)에서는 콘덴서(C1)의 충전전류(2)와 브라운관자체의 용량인 콘덴서(CB)로의 충전전류(2')가 병렬로 흐른다. 이때 화면상에 비교적 넓은 범위로 밝은 화상이 계속되면, 이 부분에서 브라운관의 애노우드 건류가 증가하여 캐소우드 전압이 떨어지게 되므로 콘덴서(CB)로의 충전전류(2')가 증가하고, 충전전류(2)는 감소된다.As shown in FIG. 2, in the deflection coil DF during the horizontal resonance period, the charging current 2 of the capacitor C1 and the charging current 2 'to the capacitor CB, which is the capacitance of the CRT, flow in parallel. . At this time, if a bright image continues in a relatively wide range on the screen, the anode current of the CRT increases and the cathode voltage drops, so that the charging current 2 'to the capacitor CB increases and the charging current 2 ) Is reduced.

이때 증가된 충전전류(2')도 최종적으로는 편향코일(DF)로 궤환(feedback)되기 때문에 이 편향코일(DF)의 전 전류량은 거의 일정하다.At this time, since the increased charging current 2 'is finally fed back to the deflection coil DF, the total current amount of the deflection coil DF is almost constant.

따라서 캐소우드 전압강하에 따라 전자비임의 직진선은 약해져도 편향코일(DF)의 전전류량에 비례하는 편향력은 거의 일정하게 됨으로써 제5b도에서와 같이 브라운관의 캐소우드에서 방출되는 전자비임의 궤적이 정상상태보다 더 큰 각도로 변화되어 화면상에는 제5a도에서 보는 바와 같이 밝은 화면부분이 수직선이 양측으로 휘어지는 현상이 발생되므로 화상이 찌그러져보이게 된다.Therefore, even if the straight line of the electron beam becomes weak due to the cathode voltage drop, the deflection force proportional to the total amount of current of the deflection coil DF becomes substantially constant, so that the trajectory of the electron beam emitted from the cathode of the cathode ray tube as shown in FIG. The image is distorted because a change occurs at an angle larger than the normal state and the bright screen portion is bent to both sides as shown in FIG. 5A.

이와같이 종래의 텔레비젼이나 모니터에서는 화면상에 비교적 넓은 범위로 밝은 부분이 계속되면, 그 부분에서 브라운관의 애노우드전류가 증가되고, 이에 의해 캐소우드전압이 떨어지게 되어 전자비임의 직진성이 약해지므로 상대적으로 편향력은 커지게 됨으로써 상기의 밝은 부분에서 수평출력의 진폭이 확대되어 화면의 수직선이 양측으로 휘어지기 때문에 정상적인 화면을 얻을 수 없는 단점이 있었다.As described above, when a bright part of a conventional TV or monitor continues to be bright in a relatively wide range on the screen, the anode current of the CRT increases at that part, and thus the cathode voltage is lowered, thereby decreasing the straightness of the electron beam. As the force increases, the amplitude of the horizontal output in the bright part is enlarged, and thus the vertical line of the screen is bent to both sides, so that a normal screen cannot be obtained.

본 고안은 상기와 같은 단점을 해결하기 위한 것으로서, 화면상에 넓은 범위로 밝은 부분이 계속되어 그 부분에서 브라운관내의 전자비임의 직진성이 약해지면, 이에 상대적으로 수평출력회로내의 편향코일의 전류량을 감소시켜줌으로써 캐소우드에서 방출되는 전자비임이 정상적인 궤적(軌跡)을 갖게 하여 화면의 수직선이 휘어지는 현상을 제거할 수 있도록 콘덴서(C2)와 방전용 다이오드(D2)를 추가하여 이루어진 것으로서, 이를 첨부도면에 의해 본 고안을 상술하면 다음과 같다.The present invention has been made to solve the above disadvantages, and if the bright part continues to a wide range on the screen, and the straightness of the electron beam in the CRT becomes weak, the current amount of the deflection coil in the horizontal output circuit is relatively reduced. By adding a capacitor (C 2 ) and a discharge diode (D 2 ) to remove the phenomenon that the vertical line of the screen is bent by the electron beam emitted from the cathode to have a normal trajectory, attached to this Detailed description of the present invention by the drawings as follows.

제1도는 본 고안의 수평출력회로도로서, 에미터측이 접지된 수평출력트랜지스터(TR)의 콜렉터측을 편향코일(DF)을 통해 귀선 공진 콘덴서(C3)와 B+ 전원단자에 연결하고 사기 귀선공진콘덴서(C3)를 댐퍼다이오드(D1)의 접촉점(x)과 그리고 콘덴서(C1)를 통해 댐퍼다이오드(D1)의 캐소드측이 접속된 플라이백트랜스(FBT)에 연결하여서 구성된 통상의 수평출력회로에 있어서, 상기 댐퍼다이오드(D1)의 접속점(x)과 콘덴서(C1), (C3)의 접속점 사이에 콘덴서(C2)와 방전용 다이오드(D2)를 병력 접속하여서 구성한 것이다.1 is a horizontal output circuit diagram of the present invention, which connects the collector side of the horizontal output transistor TR with the emitter side grounded to the resonant resonant capacitor C 3 and the B + power terminal through a deflection coil DF, ordinary configured hayeoseo connect the capacitor (C 3) to the damper diode contact points (x) and the and the capacitor (C 1) a flyback transformer (FBT) the cathode of the damper diode (D 1) connected through a (D 1) In the horizontal output circuit, a capacitor C 2 and a discharge diode D 2 are connected in parallel between a connection point x of the damper diode D 1 and a connection point of the capacitors C 1 and C 3 . It is made up.

이와같이 구성된 본 고안을 제3도에 따라 작용효과를 상세히 설명하면 다음과 같다.Referring to the present invention configured in this way in accordance with Figure 3 in detail as follows.

제3도는 제1도의 수평출력회로의 등가회로도로서 수평공진기간에 브라운관 자체용량인 콘덴서(CB)로의 충전전류(2')는 추가된 콘덴서(C2)를 충전하면서 흐르게 되는데, 이 콘덴서(C2)에 충전된 전하는 편향코일(DF)쪽으로 궤한되며, 수평출력 트랜지스터(TR)가 도통되는 기간동안, 즉 전류(1)가 흐르는 기간동안에는 추가된 다이오드(D2)에 의하여 방전하게 된다. 따라서 밝은 화면이 계속되어 캐소우드 전압이 낮아짐으로써 충전전류(2')가 증가하면 상기의 콘덴서(C2)로의 충전량이 증가하고, 이 증가된 충전량 만큼 편향코일(DF)의 전 전류량, 즉 편향 에너지는 감소한다.3 is an equivalent circuit diagram of the horizontal output circuit of FIG. 1, in which the charging current 2 'to the capacitor CB, which is the capillary tube's own capacitance, flows while charging the added capacitor C 2 during the horizontal resonance period. The charge charged in 2 ) is traced toward the deflection coil DF, and is discharged by the added diode D 2 during the period in which the horizontal output transistor TR conducts, that is, during the current 1 flow. Therefore, when the bright screen is continued and the cathode voltage is lowered and the charging current 2 'is increased, the amount of charge to the capacitor C 2 is increased, and the total amount of current of the deflection coil DF, that is, deflection, is increased by the increased amount of charge. Energy decreases.

이렇게 편향코일(DF)의 편향에너지가 감소함에 따라 편향력도 약해지므로, 결국 밝은 화면이 계속될 경우 전술한 바와 같이 전자비임의 직진력이 약해지는 상태에 대응하여 그 편향력도 약해지게 됨으로써, 전자비임은 정상상태와 동일한 궤적으로 가지게 되어 제5a도에서와 같은 종래의 현상이 제기되는 것이다.As the deflection energy of the deflection coil DF decreases, the deflection force is weakened. Accordingly, when the bright screen continues, the deflection force is also weakened in response to the weakening of the straight line force of the electron beam as described above. The electron beam will have the same trajectory as in the steady state, resulting in a conventional phenomenon as in FIG. 5A.

한편, 제4도는 제2도 및 제3도에서의 각 전류(1), (2), (2'), (3), (4)에 의해 수평편향코일(DF)에 나타나는 편향전류의 파형을 나타낸 것이다.4 is a waveform of the deflection current appearing in the horizontal deflection coil DF by the currents 1, 2, 2 ', 3, and 4 in FIGS. 2 and 3, respectively. It is shown.

이상과 같이 본 고안은 브라운관 화면에 비교적 넓은 범위로 밝은 부분이 계속될 경우 그 밝은 부분의 화면이 양측으로 찌그러지는 현상을 제거시켜 제품의 고급화를 이룩한 유용한 고안이다.As described above, the present invention is a useful design that achieves high-quality products by eliminating the phenomenon that the bright part of the screen is distorted to both sides when the bright part continues in a relatively wide range on the CRT screen.

Claims (1)

에미터측이 접지된 수평출력 트랜지스터(TR)의 콜렉터측을 편향코일(DF)을 통해 귀선공진콘덴서(C3)와 B+ 전원단자에 연결하고, 상기 귀선공진콘덴서(C3)를 병렬접속된 댐퍼다이오드(D1) 및 콘덴서(C1)를 통해 플라이백 트랜스(FBT)에 연결하여서 구성된 통상의 수평출력 회로에 있어서, 상기 댐퍼다이오드(D1)의 애노우드와 콘덴서(C1), (C3)의 접속점과 접지사이에 콘덴서(C2)와 방전용 다이오드(D2)를 병렬 접속하여, 수평공진기간동안 상기의 콘덴서(C2)에 충전된 전하를 통상의 수평출력 트랜지스터(TR)의 도통기간 동안 상기의 다이오드(D2)를 통해 방진시키도록 구성함을 특징으로 하는 수평출력제어회로.The collector side of the horizontal output transistor TR having the emitter side grounded is connected to the resonant resonance capacitor C 3 and the B + power supply terminal via a deflection coil DF, and the resonant resonance capacitor C 3 is connected in parallel. a diode (D 1) and capacitor (C 1) the flyback transformer according to (FBT) hayeoseo connected to a conventional horizontal output circuit configured, the damper anode and the capacitor (C 1) of the diode (D 1) through, (C 3 ) The capacitor C 2 and the discharge diode D 2 are connected in parallel between the connection point of the circuit and the ground, and the charge charged in the capacitor C 2 during the horizontal resonance period is transferred to the normal horizontal output transistor TR. Horizontal output control circuit, characterized in that configured to be dustproof through the diode (D 2 ) during the conduction period of.
KR2019850010802U 1985-08-24 1985-08-24 Horizontal output control circuit KR910008273Y1 (en)

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KR2019850010802U KR910008273Y1 (en) 1985-08-24 1985-08-24 Horizontal output control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019850010802U KR910008273Y1 (en) 1985-08-24 1985-08-24 Horizontal output control circuit

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KR870004458U KR870004458U (en) 1987-07-31
KR910008273Y1 true KR910008273Y1 (en) 1991-10-15

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