KR960010670Y1 - Power control apparatus of crt - Google Patents

Power control apparatus of crt Download PDF

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Publication number
KR960010670Y1
KR960010670Y1 KR2019930014234U KR930014234U KR960010670Y1 KR 960010670 Y1 KR960010670 Y1 KR 960010670Y1 KR 2019930014234 U KR2019930014234 U KR 2019930014234U KR 930014234 U KR930014234 U KR 930014234U KR 960010670 Y1 KR960010670 Y1 KR 960010670Y1
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KR
South Korea
Prior art keywords
voltage
cathode ray
ray tube
focus
screen
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KR2019930014234U
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Korean (ko)
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KR950005122U (en
Inventor
김종고
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대우전자부품 주식회사
서두칠
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Priority to KR2019930014234U priority Critical patent/KR960010670Y1/en
Publication of KR950005122U publication Critical patent/KR950005122U/en
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Publication of KR960010670Y1 publication Critical patent/KR960010670Y1/en

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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
    • H04N3/19—Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

내용 없음.No content.

Description

음극선관의 전압 조정장치Voltage regulator of cathode ray tube

제1도는 일반적인 음극선관의 전압 조정 장치를 개략적으로 나타낸 구성도.1 is a schematic view showing a voltage regulating device of a typical cathode ray tube.

제2도는 본 고안의 1실시예에 따른 음극선관의 전압 조정 장치를 나타낸 구성도2 is a block diagram showing a voltage adjusting device of a cathode ray tube according to an embodiment of the present invention

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

VR1~VR3 : 가변저항 L1, L2 : 코일VR1 ~ VR3: Variable resistor L1, L2: Coil

본 고안은 일반적인 음극선관(Cathode Ray Tube)에 인가되는 전압을 조정하는 음극선관의 전압 조정 장치에 관한 것이다.The present invention relates to a voltage adjusting device of a cathode ray tube for adjusting a voltage applied to a common cathode ray tube.

제1도는 음극선관에 인가되는 고전압과 포커스 및 스크린 전압을 발생시키기 위한 음극선관 전압 공급 장치를 나타낸 것으로, 이는 1차측 코일(L1)에 인가되는 전원을 근거로 2차측 코일(L2)로 고전압을 유기하는 FBT(Flyback Transformer)와, 이 FBT의 고전압 출력 단자와 접지사이에 직렬 접속되어 각각 포커스 전압 및 스크린 전압을 생성하기 위한 가변저항(VR1, VR2)으로 구성되어 있다.FIG. 1 shows a cathode ray tube voltage supply device for generating a high voltage applied to the cathode ray tube and a focus and screen voltage, which is applied to the secondary coil L2 based on a power applied to the primary coil L1. It consists of a flyback transformer (FBT) to be discharged and variable resistors VR1 and VR2 connected in series between the high voltage output terminal of the FBT and ground to generate a focus voltage and a screen voltage, respectively.

즉, 상기한 구성에서는 음극선관으로 인가되는 고전압을 가변저항(VR1, VR2)으로 전압 분할함으로써 포커스 전압 및 스크린 전압을얻도록되어있다.In other words, in the above configuration, the high voltage applied to the cathode ray tube is divided into voltages by the variable resistors VR1 and VR2 to obtain the focus voltage and the screen voltage.

그런데, 상기 포커스 전압 및 스크린 전압은 통상 음극선관의 앤드전극에 인가되는 CRT고압의 24%~28% 정도로 설정되지만, 제조업체 별로 26%~30% 또는 28%~32%정도로 설정되는 경우도 있게된다. 따라서, 심한 경우 정확한 포커스 전압 및 스크린 전압을 얻을 수 없는 경우도 있게 된다.By the way, the focus voltage and the screen voltage is usually set to about 24% to 28% of the CRT high voltage applied to the AND electrode of the cathode ray tube, but may be set to about 26% to 30% or 28% to 32% by manufacturer. . Therefore, in some cases, accurate focus voltage and screen voltage may not be obtained.

이에 본 고안은 상기한 사정을 감안해서 안출된 것으로, FBT로부터 출력되는 CRT고압으로부터 정밀한 포커스 및 스크린 전압을 얻을 수 있도록 된 음극선관의 전압 조정장치를 제공함에 그 목적이 있다.The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a voltage adjusting device of a cathode ray tube which can obtain a precise focus and screen voltage from the CRT high voltage output from the FBT.

상기 목적을 실현하기 위한 본 고안에 따른 음극선관의 전압 조정장치는 1차측 코일(L1)에 인가되는 전운을 근거로 2차측 코일(L2)로 고전압을 유기하는 플라이백 트랜스포머(FBT)와, 이 플라이백 트랜스포더(FBT)의 고전압 출력 단자와 접지 사이에 직렬로 접속되어 각각 포커스 전압 및 스크린 전압을 생성하는 가변저항(VR1, VR2)으로 구성된 음극선관 전압 공급 장치에 있어서, 상기 가변저항(VR1, VR2)과 직렬로 가변저항(VR3)을 설치한 구성으로 되어 있다.The voltage adjusting device of the cathode ray tube according to the present invention for achieving the above object is a flyback transformer (FBT) for inducing a high voltage to the secondary coil (L2) based on the fortune applied to the primary coil (L1), and In the cathode ray tube voltage supply device comprising variable resistors VR1 and VR2 connected in series between a high voltage output terminal of a flyback transformer FBT and ground to generate a focus voltage and a screen voltage, respectively, the variable resistor VR1. , Variable resistance VR3 is provided in series with VR2.

즉, 제2도는 상기한 구성으로 된 음극선관의 전압 조정장치를 나타낸 것으로, 포커스 전압 조정용 저항(VR1) 및 스크린 전압 조정용 저항(VR2)과 직렬로 가변저항(VR3)이 설치되어 있는바, 이 가변저항(VR3)을 적당하게 조정함으로써 가변저항(VR1, VR2)에 의한 조정폭을 일반적으로 요구되는 CRT 고압의 22~32% 정도로 설정할수 있게 된다.2 shows a voltage adjusting device of the cathode ray tube having the above-described configuration, in which a variable resistor VR3 is provided in series with the focus voltage adjusting resistor VR1 and the screen voltage adjusting resistor VR2. By appropriately adjusting the variable resistor VR3, the adjustment range by the variable resistors VR1 and VR2 can be set to about 22 to 32% of the CRT high voltage generally required.

또한, 상기 가변저항(VR3)의 설치 위치는 CRT 고압 출력 단자와 접지 사이의 특정 부위에 한정되지는 않지만, 2차 코일(L2)에 의해 유기되는 고압의 영향을 고려하여, 기존에 저항(VR1, VR2)이 설치되어 있는 위치의 중간 부위에 설치하는 것이 바람직하다.In addition, the installation position of the variable resistor VR3 is not limited to a specific portion between the CRT high voltage output terminal and the ground, but in consideration of the influence of the high voltage induced by the secondary coil L2, the resistor VR1 has been previously established. , VR2) is preferably installed in the middle portion of the position where it is installed.

또한, 본 고안은 상기 예에 한정되지 않고, CRT고압으로부터 얻어지는 포커스 전압 및 스크린 전압을 일부 가변 시킬수 있는 구성이라면, 다른 구성으로 해도 무방하다.In addition, this invention is not limited to the said example, As long as it is a structure which can change a part of focus voltage and screen voltage obtained from CRT high voltage, you may make another structure.

이상 설명한 바와같이 본 고안에 의하면, 포커스 전압과 스크린 전압을 적정한 레벨로 조정할수 있도록 된 음극선관의 전압 조정 장치를 실현할수 있게 된다.As described above, according to the present invention, it is possible to realize the voltage adjusting device of the cathode ray tube in which the focus voltage and the screen voltage can be adjusted to an appropriate level.

Claims (2)

1차측 코일(L1)에 인가되는 전원을 근거로 2차측 코일(L2)고전압을 유기하는 플라이백 트랜스포머(FBT)와, 이 플라이백트랜스포머(FBT)의 고전압 출력 단자와 접지 사이에 직렬로 접속되어 각각 포커스 전압 및 스크린 전압을 생성하는 가변저항(VR1, VR2)으로 구성된 음극선관 전압 공급 장치에 있어서, 상기 가변저항(VR1, VR2)과 직렬로 가변저항(VR3)을 설치한 것을 특징으로 하는 음극선관의 전압 조정장치.A flyback transformer (FBT) that induces a high voltage of the secondary coil (L2) based on a power applied to the primary coil (L1), and is connected in series between the high voltage output terminal of the flyback transformer (FBT) and ground. A cathode ray tube voltage supply device composed of variable resistors VR1 and VR2 for generating a focus voltage and a screen voltage, respectively, characterized in that a cathode ray is provided with a variable resistor VR3 in series with the variable resistors VR1 and VR2. Voltage regulator of the tube. 제1항에 있어서, 상기 가변저항(VR3)은 포커스 전압 조정용 저항(VR1)과 스크린 전압 조정용 저항(VR2)의 사이에 설치되는 것을 특징으로 하는 음극선관의 전압 조정 장치.The voltage adjusting device of the cathode ray tube according to claim 1, wherein the variable resistor (VR3) is provided between the focus voltage adjusting resistor (VR1) and the screen voltage adjusting resistor (VR2).
KR2019930014234U 1993-07-28 1993-07-28 Power control apparatus of crt KR960010670Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019930014234U KR960010670Y1 (en) 1993-07-28 1993-07-28 Power control apparatus of crt

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Application Number Priority Date Filing Date Title
KR2019930014234U KR960010670Y1 (en) 1993-07-28 1993-07-28 Power control apparatus of crt

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KR950005122U KR950005122U (en) 1995-02-18
KR960010670Y1 true KR960010670Y1 (en) 1996-12-23

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