KR900001454Y1 - High voltage stabilization device for t.v. - Google Patents

High voltage stabilization device for t.v. Download PDF

Info

Publication number
KR900001454Y1
KR900001454Y1 KR2019860005554U KR860005554U KR900001454Y1 KR 900001454 Y1 KR900001454 Y1 KR 900001454Y1 KR 2019860005554 U KR2019860005554 U KR 2019860005554U KR 860005554 U KR860005554 U KR 860005554U KR 900001454 Y1 KR900001454 Y1 KR 900001454Y1
Authority
KR
South Korea
Prior art keywords
operational amplifier
high voltage
voltage
input
transistor
Prior art date
Application number
KR2019860005554U
Other languages
Korean (ko)
Other versions
KR870017351U (en
Inventor
김연동
Original Assignee
주식회사금성사
구자학
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 주식회사금성사, 구자학 filed Critical 주식회사금성사
Priority to KR2019860005554U priority Critical patent/KR900001454Y1/en
Publication of KR870017351U publication Critical patent/KR870017351U/en
Application granted granted Critical
Publication of KR900001454Y1 publication Critical patent/KR900001454Y1/en

Links

Classifications

    • 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

Landscapes

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

Abstract

내용 없음.No content.

Description

TV 수상기용 고전압 안정화 장치High Voltage Stabilizer for TV Receivers

제1도는 본 고안 장치의 회로도.1 is a circuit diagram of the device of the present invention.

제2도는 종래 고압장치의 회로도.2 is a circuit diagram of a conventional high pressure device.

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

1 : 플라이백트랜스 2 : 톱로링 회로1: flyback transformer 2: top ringing circuit

3,4 : 연산증폭기3,4: operational amplifier

본 고안은 TV수상기의 음극선관의 에노드 단자에 공급되는 고전압을 일정하게 유지시키기 위한 고전압안정화 장치에 관한 것으로서 특히, 음극선관에서 상영되는 화면의 변화에 따라 고전압이 변화되는 것을 방지하기 위한 고전압안정 장치에 관한 것이다.The present invention relates to a high voltage stabilization device for maintaining a constant high voltage supplied to the anode terminal of the cathode ray tube of the TV receiver, in particular, high voltage stability to prevent the high voltage changes in accordance with the change of the screen screened on the cathode ray tube Relates to a device.

종래 TV수상기용 고압장치는 제2도에 도시된 바와 같이 플라이백 트랜스(31)의 2차측권선에 콘덴서(C0)와 브리더저항(R0)으로 구성된 톱로링회로(32)를 통하여 음극선관(33)의 애노드 전극에 고압전압을 인가하도록 되어 있고, 여기에서 콘덴서(C0)는 고전압완충작용으로 하므로서 고전압의 안정도를 향상시키기 위한 작용을 하나, 예를들면 음극선관의 화면의 변화에 따라 고전압의 변동이 발생되면 어느정도의 변화분은 톱로링회로(32)에서 완충하여 어느정도 안정되게 유지시킬 수 있으나 ±0.5KV이하로 유지시킬 수 없어 안정화된 화면을 얻을 수 없게 된다는 단점이 있다.In the conventional TV receiver high pressure device, as shown in FIG. 2, a cathode ray tube is formed through a top ring circuit 32 including a condenser C 0 and a breather resistor R 0 on a secondary side winding of a flyback transformer 31. A high voltage is applied to the anode electrode of (33), where the capacitor C 0 acts to improve the stability of the high voltage by acting as a high voltage buffering action, for example, according to the change of the screen of the cathode ray tube. If a change in the high voltage occurs, a certain amount of change can be buffered in the top ring circuit 32 to be kept to a certain degree, but there is a disadvantage in that a stabilized picture cannot be obtained because it cannot be maintained below ± 0.5 KV.

본 고안은 이러한 종래의 단점을 해결하도록 고전압의 변화성분을 궤환시켜 별도의 안정화 장치로 고전압을 안정화시켜, 화면의 성능향상이 됨과 동시에 고압안정도가 낮은 플라이백트랜스를 사용하여도 양호한 고압안정도를 유지시킬 수 있어 플라이백트랜스의 제작에 기술적인 규제를 작게받을 뿐 아니라 화면의 울렁거림을 방지할 수 있는 고정압 안정화 장치를 제공하는 것을 목적으로 하여 이하 첨부된 도면을 참조하면서 본 고안의 구성 및 작용효과를 설명하면 다음과 같다.In order to solve the above disadvantages, the present invention feeds back the components of high voltage, stabilizes the high voltage with a separate stabilization device, improves the performance of the screen, and maintains good high pressure stability even when using a flyback transformer having low high pressure stability. The construction and operation of the present invention with reference to the accompanying drawings for the purpose of providing a fixed pressure stabilization device that can prevent the screen rumble as well as to reduce the technical restrictions in the manufacture of flyback transformer The effect is as follows.

제1도를 참조하면 본 고안 장치는 플라이백트랜스(1)의 2차측권선에 연결된 콘덴서(C1)와 브리더저항(R1)으로 구성된 톱로링회로(2)의 단자(e)를 저항(R3)을 통하여 연산증폭기(3)의 입력(+)에 연결하되 저항(R3)의 양단을 콘덴서(C2, C3)로 접지하고, 연산증폭기(3)의 출력을 자체입력(-)에 연결함과 동시에 저항(R4, R6)과 가변저항(R5)을 통하여 접지하며, 가변저항(R5)의 가동자를 저항(R7)을 통하여 연산증폭기(4)의 입력(-)에 연결하되 연산증폭기(4)의 입력(+)에는 기준전압을 인가하고, 연산증폭기(4)의 출력은 트랜지스터(Q2)의 베이스에 연결하여 플라이백 트랜스(1)의 구동전원 제어 트랜지스터(Q2)로 제어하도록 연결하여된 구성으로서 이러한 본 고안 구성의 작용효과는 음극선관(5)의 애노드에 공급되는 단자(i)의 고전압이 소정기준전압보다 큰 경우에는 단자(e)에 나타나는 전압도 기준전압의 경우 보다 높게 나타나고 이 증가된 전압은 저항(R3)을 통하여 연산증폭기(3)의 입력(+)에 인가된다.Referring to FIG. 1, the device of the present invention includes a resistor (C) of a top ring circuit (2) composed of a capacitor (C 1 ) and a breather resistor (R 1 ) connected to a secondary winding of a flyback transformer (1). R 3 ) is connected to the input (+) of the operational amplifier (3), the ground of both ends of the resistor (R 3 ) to the capacitor (C 2 , C 3 ), and the output of the operational amplifier (3) to its own input (- ) connection, and at the same time resistance (R 4, R 6) and, and the ground via a variable resistor (R 5), input of the variable resistor (R 5), the operational amplifier 4, the mover through the resistor (R 7) of the ( -) But the reference voltage is applied to the input (+) of the operational amplifier (4), the output of the operational amplifier (4) is connected to the base of the transistor (Q 2 ) to control the drive power of the flyback transformer (1) the transistor operation and effect of the present design configuration as a configuration to connect to a control (Q 2) is more than the predetermined high voltage based on the voltage of the terminal (i) to be supplied to the anode of a cathode ray tube (5) If is applied to an input (+) of the increased voltage appears higher than that of the reference voltage, the voltage that appears in the terminal (e) the resistance operational amplifier 3 via the (R 3).

그런데 연산증폭기(3)의 입력(-)은 자체출력에 연결되어 에미터플로워로 작동되므로 연산증폭기(3)의 입력(+)에 인가된 전압은 버퍼증폭되어 출력으로 나타난다.However, since the input (-) of the operational amplifier 3 is connected to its own output to operate as an emitter follower, the voltage applied to the input (+) of the operational amplifier 3 is buffered and appears as an output.

이 출력전압은 저항(R4~R6)에 의하여 분압되고 소정전압이 가변저항(R5)의 가동자에서 유출된다.This output voltage is divided by the resistors R 4 to R 6 and a predetermined voltage flows out of the mover of the variable resistor R 5 .

가변저항(R5)의 가동자에서 인출된 출력은 연산증폭기(4)의 입력(-)에 인가된다.The output drawn from the mover of the variable resistor R 5 is applied to the input (−) of the operational amplifier 4.

또한 연산증폭기(4)의 입력(+)에는 기준전압이 인가되어 있으므로 입력(-)에 인가된 전압(고전압의 변동분)은 비교증폭되고 연산증폭기(4)의 출력에서 반전되어 나타난다.In addition, since the reference voltage is applied to the input (+) of the operational amplifier 4, the voltage (variation of the high voltage) applied to the input (-) is comparatively amplified and inverted at the output of the operational amplifier 4.

연산증폭기(4)의 출력은 트랜지스터(Q2)의 베이스에 인가되면 트랜지스터(Q2)는 전류트랜지스터(Q3)의 전류도통율을 제어하게된다.The output of the operational amplifier (4) is applied to the base of the transistor (Q 2) transistors (Q 2) is controlling the current conduction rate of a current transistor (Q 3).

즉, 반전된 출력이 트랜지스터(Q2)의 베이스에 인가되면 트랜지스터는(Q2)가 오프되고 이에 따라서 트랜지스터(Q3)는 온되게 되어 트랜지스터(Q3)의 콜렉터 단자(C)에는 단자(g) 공급된 B+ 전원보다 낮은 전압이 걸리게 되고, 이 낮은 전압이 플라이백트랜스(1)의 1차측에 인가되므로 반전 증폭되어 연산증폭기(4)의 출력은 높아지므로 트랜지스터(Q2)를 온시키게 트랜지스터(Q3)가 오프되므로 트랜지스터(Q3)의 콜렉터 전압이 상승된다.That is, when the inverted output is applied to the base of the transistor (Q 2) transistors is (Q 2) is off and accordingly the transistor (Q 3) is to be turned on, the collector terminal (C) of the transistor (Q 3) terminals ( g) A voltage lower than that of the supplied B + power is applied, and this low voltage is applied to the primary side of the flyback transformer 1 so that it is inverted and amplified so that the output of the operational amplifier 4 becomes high, thereby turning on the transistor Q 2 . Since the transistor Q 3 is turned off, the collector voltage of the transistor Q 3 rises.

따라서 플라이백 트랜스(1)의 일차측권선에 상승된 전압이 걸리므로 2차측의 출력 고전압은 상승되어 단자(I)에서의 고전압은 다시 상승되는 것이다.Therefore, since the increased voltage is applied to the primary side winding of the flyback transformer 1, the output high voltage of the secondary side is increased and the high voltage at the terminal I is raised again.

이상에서 설명된 바와 같이 본 고안에 의하면 음극선관(5)의 애노드단자(i)의 전압이 항상 일정하게 유지되므로 화면이 흔들거리는 현상이 없어져 고품질의 화면을 얻을 수 있을 뿐 아니라 고압 안전도가 낮은 플라이백트랜스를 사용하여도 양호한 고전압안정도를 얻을 수 있으므로 플라이백트랜스의 제작에 기술적 규제가 적어져서 플라이백트랜스의 가격을 낮출 수 있는 것이다.As described above, according to the present invention, since the voltage of the anode terminal (i) of the cathode ray tube 5 is always kept constant, the screen is not flickered and a high quality screen is obtained as well as a low voltage safety fly. The use of a back transformer can provide a good high voltage stability, so there are fewer technical restrictions in the fabrication of the flyback transformer, thereby lowering the price of the flyback transformer.

Claims (1)

플라이트랜스백(1)의 2차측 권선에 연결된 콘덴서(C1)와 브리더저항(R1)으로 구성된 톱로링회로(2)의 단자(e)를 저항(R3)을 통하여 연산증폭기(3)의 이 입력(+)에 연결하되 , 저항(R3)의 양단을 콘덴서(C2,C3)로 접지하고, 연산증폭기(3)의 출력을 자체입력(-)에 연결함과 동시에 저항(R4, R6)연결하되 연산증폭기(4)의 입력(+)에는 기준전압을 인가하고 , 연산증폭기(4)의 출력은 트랜지스터(Q2)의 베이스에 연결하여 플라이백 트랜스(1)의 구동전원제어 트랜지스터(Q3)를 트랜지스터(Q2)로 제어하도록 연결하여된 TV 수상기용 고전압 안정화장치.The operational amplifier (3) is connected to the terminal (e) of the top ring circuit (2) consisting of a capacitor (C 1 ) and a breather resistor (R 1 ) connected to the secondary winding of the flyback (1) through a resistor (R 3 ). Connect to this input of (+), ground both ends of resistor (R 3 ) with capacitor (C 2 , C 3 ), connect output of operational amplifier (3) to its own input (-) and at the same time, R 4 , R 6 ), but the reference voltage is applied to the input (+) of the operational amplifier (4), the output of the operational amplifier (4) is connected to the base of the transistor (Q 2 ) of the flyback transformer (1) A high voltage stabilization device for a TV receiver connected by controlling the driving power supply control transistor (Q 3 ) to a transistor (Q 2 ).
KR2019860005554U 1986-04-23 1986-04-23 High voltage stabilization device for t.v. KR900001454Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860005554U KR900001454Y1 (en) 1986-04-23 1986-04-23 High voltage stabilization device for t.v.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860005554U KR900001454Y1 (en) 1986-04-23 1986-04-23 High voltage stabilization device for t.v.

Publications (2)

Publication Number Publication Date
KR870017351U KR870017351U (en) 1987-11-30
KR900001454Y1 true KR900001454Y1 (en) 1990-02-26

Family

ID=19251014

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019860005554U KR900001454Y1 (en) 1986-04-23 1986-04-23 High voltage stabilization device for t.v.

Country Status (1)

Country Link
KR (1) KR900001454Y1 (en)

Also Published As

Publication number Publication date
KR870017351U (en) 1987-11-30

Similar Documents

Publication Publication Date Title
KR940020822A (en) Circuit to compensate for blue phosphor roll off at high drive level in projection television system
RU2130235C1 (en) Device for regulation of brightness and contrast in tv set
KR900001454Y1 (en) High voltage stabilization device for t.v.
PT80802B (en) DIGITAL VIDEO SIGN PROCESSING SYSTEM
JPS6216796Y2 (en)
KR900007848Y1 (en) Vertical deflection circuit for a cathode-ray tube having a vertical image-position adjustment circuit
US4870331A (en) Circuit arrangement for a picture display device for the stabilization of the size of the picture displayed
JPS5848833Y2 (en) horizontal centering circuit
GB2234132A (en) Sensed eht level controls brightness, contrast and therefore beam current
KR880002514Y1 (en) Image stabilized device
KR910003669Y1 (en) Vertical size compensating circuit
JPS6216795Y2 (en)
KR910003956Y1 (en) Picture screen size control circuit of two mode type display apparattus
KR900009586Y1 (en) Circuit for controlling dimensious and shape
KR920001483Y1 (en) Automatic luminance control circuit of color tv
MY111509A (en) Circuit for compensating the blue phosphor roll off at high drive levels in a projection television system
US3950672A (en) Circuit for producing correctly timed vertical blanking pulses from a vertical sweep circuit
JPS5843431Y2 (en) Switching regulator circuit
JPS5610781A (en) Automatic brightness correcting circuit of television receiver
KR890005765Y1 (en) White balance compensation circuit for t.v.
KR910005804Y1 (en) Frequency compensation circuit
SU1338110A1 (en) Video amplifier
KR900000776Y1 (en) Speed up devices of beam current auto-control circuits
JPH054369Y2 (en)
JPH0323735Y2 (en)

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19971229

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee