KR940001382Y1 - Horizontal power supply control circuit for tv - Google Patents
Horizontal power supply control circuit for tv Download PDFInfo
- Publication number
- KR940001382Y1 KR940001382Y1 KR2019910017838U KR910017838U KR940001382Y1 KR 940001382 Y1 KR940001382 Y1 KR 940001382Y1 KR 2019910017838 U KR2019910017838 U KR 2019910017838U KR 910017838 U KR910017838 U KR 910017838U KR 940001382 Y1 KR940001382 Y1 KR 940001382Y1
- Authority
- KR
- South Korea
- Prior art keywords
- power supply
- voltage
- control circuit
- converter
- horizontal power
- Prior art date
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Details Of Television Scanning (AREA)
- Dc-Dc Converters (AREA)
Abstract
내용 없음.No content.
Description
제1도는 종래의 수평전원공급제어회로도.1 is a conventional horizontal power supply control circuit diagram.
제2도는 본 고안에 따른 수평전원공급제어회로도이다.2 is a horizontal power supply control circuit diagram according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 정류평활부 2 : DCㅡDC : 콘버터부1: rectification smoothing part 2: DC ㅡ DC: converter part
3 : 평활부 5 : 제어신호발생부3: smoothing part 5: control signal generating part
6 : 전류검출부6: current detector
본 고안은 대형 고해상도 텔레비젼이나 모니터등에 사용되는 수평 전원공급제어회로에 관한 것으로, 특히 부하변동에 따른 전력손실 및 레굴레이션(Regulation)의 영향을 개선시킨 텔레비젼의 수평전원공급제어회로에 관한 것이다.The present invention relates to a horizontal power supply control circuit used in a large high-definition television or a monitor, and more particularly, to a horizontal power supply control circuit of a television that improves the effects of power loss and regulation due to load variation.
종래에는 텔레비젼의 수평편향코일에 공급되는 수평전원은 종래의 회로도인 제1도를 참조하여 설명하면 정류평활부(1)를 거쳐 출력된 전압이 DCㅡDC 콘버터부 (2)의 트랜스(T1)의 권선수에 비례한 전압으로 2차 측으로 전달되어 평활부(3)에서 평활되어출력되게 된다. 이때 트랜스(T1)의 1차측 입력단에 트랜지스터(Q1)와 저항 (R1,R2)으로된 전류검출부(4)와 제어신호발생부(5)가 연결되는데, 제어신호발생부 (5)의 출력단자(OUT)는 트랜지스터(Q1)의 게이트에 연결되고 입력단자(IN)는 저항(R1)에 연결된다. 제어신호발생부(5)의 출력에 따라 전류검출부(4)의 트랜지스터 (Q1)가 구동되면 1차측 입력전원이 저항(R1,R2)에 의해 분배되며 저항(R1)에서 검출된 전압값이 입력단자(IN)에 인가되고 제어신호발생부(5)가 동작하여 제어신호출력단자(OUT)의 출력값에 따라 전류검출부 (4)의 트랜지스터(Q1)를 제어하게 된다, 이에따라, 트랜스(T1 )의 1차측 입력전원이 제어되어 2차측으로 출력전압을 공급하였다.Conventionally, the horizontal power supplied to the horizontal deflection coil of a television is described with reference to FIG. 1, which is a conventional circuit diagram. The voltage outputted through the rectifying smoothing unit 1 is a transformer T1 of the DC-DC converter unit 2. It is transmitted to the secondary side with a voltage proportional to the number of turns of the smoothed portion 3 is to be outputted. At this time, the current detector 4 and the control signal generator 5 made of the transistor Q1 and the resistors R1 and R2 are connected to the primary input terminal of the transformer T1, and the output terminal of the control signal generator 5 is connected. OUT is connected to the gate of transistor Q1 and input terminal IN is connected to resistor R1. When the transistor Q1 of the current detector 4 is driven in accordance with the output of the control signal generator 5, the primary input power is distributed by the resistors R1 and R2 and the voltage value detected by the resistor R1 is input. It is applied to the terminal IN and the control signal generator 5 operates to control the transistor Q1 of the current detector 4 according to the output value of the control signal output terminal OUT. The primary input power was controlled to supply the output voltage to the secondary side.
그러나, 이와같은 종래 기술은 DCㅡDC 콘버터의 트랜스 및 트랜지스터의 듀티( (Duty)에 이해 부하변동에 따른 스위칭전력손실 및 열손실이 발생되며, 트랜스의 누설인덕턴스에 의해 레귤에이션에 영향을 주게된다.However, such a prior art can understand the duty of the transformer of the DC-DC converter and the duty of the transistor ((Duty)), resulting in switching power loss and heat loss due to load fluctuations, and affecting regulation by the leakage inductance of the transformer. .
본 고안은 이와같은 문제점을 해결하기 위한 것으로, 본 고안의 목적은 DCㅡDC 콘버터의 출력전압을 직접검출하여 제어신호발생부를 구동시킨 텔레비젼의 수평전원공급제어회로를 제공하는 것이다.The present invention is to solve such a problem, an object of the present invention is to provide a horizontal power supply control circuit of a television driving the control signal generator by directly detecting the output voltage of the DC-DC converter.
이와같은 목적을 달성하기 위한 본 고안의 특성은 텔레비젼의 편향코일에 수평전원을 공급하기 위한 수평전원공급제어회로에 있어서, 정류평활된 인가전압을 권선수에 비례한 전압으로 출력시키기 위한 DCㅡDC 콘버터부, DCㅡDC 콘버터부의 출력을 평활시켜 부하에 전압을 공급시키기 위한 평활부, DCㅡDC 콘버터부와 평활부 사이에 마련되어 DCㅡDC 콘버터부의 출력전류를 검출하여 검출된 출력값에 따라 제어되며 분배전압을 얻기위한 전류검출부, 분배전압에 따라 DCㅡDC 콘버터부를 제어시키기 위한 제어신호를 발생하는 제어신호발생부를 포함하는 텔레비젼의 수평전원공급제어회로에 있다.The characteristics of the present invention for achieving the above object is a DC-DC in the horizontal power supply control circuit for supplying horizontal power to the deflection coil of the television, to output the rectified smoothed applied voltage as a voltage proportional to the number of turns It is provided between the DC-DC converter and the smoothing part, which is provided between the DC-DC converter and the smoothing part to smooth the output of the converter part and DC-DC converter part to supply voltage to the load, and is controlled according to the detected output value. And a control signal generator for generating a control signal for controlling the DC-DC converter according to the distribution voltage.
이하, 본고안을 첨부도면에 의하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제2도는 본 고안에 따른 수평전원공급제어회로도로서, 제1도와 동일부호는 동일부분을 나타낸다.2 is a horizontal power supply control circuit diagram according to the present invention, the same reference numerals as in FIG. 1 denote the same parts.
도시한 바와같이 정류평활부(1)에서 출력된 전압을 권선수에 비례한 전압으로 출력시키기 위한 DCㅡDC 콘버터부(2)와, DCㅡDC 콘버터부(2)출력전압을 평활시키기 위한 평활부(3)와, DCㅡDC 콘버터부(2)와, 평활부 (3) 사이에 선로중 하나의 선로에 마련되어 그 선로에 흐르는 전류를 검출하기 위한 전류검출부(6)와, 전류검출부(6)의 검출값에 따라 DCㅡDC 콘버터부(2)를 제어하기 위한 제어신호를 발생하는 제어신호발생부(5)로 구성된다. 이와같이 구성되는 본 고안의 수평전원공급제어회로의 동작을 살펴보면 전원입력전압이 정류평활부 (1)을 통해 DCㅡDC 콘버터부(2)에 인가되면 노이즈억압용 쵸크트랜스(T1)를 거쳐 평활부(3)에서 Bㅡ전원이 출력되게 된다. 여기서, 트랜지스터(Q2)와, 저항(R3ㅡR6)으로 구성되는 전류검출부(6)는 DCㅡDC 콘버터부(2)와 평활부(3)를 연결하는 선로중 저항(R3)을 거쳐 연결되는 선로를 통해 트랜지스터(Q2)가 구동되며, 그 선로의 다른 일측은 저항(R4)을 통해 트랜지스터(Q2)의 에미터에 연결되어 트랜지스터(Q2)의 출력전압이 저항(R5,R6)에 의해 분배되게 된다.As shown in the figure, the DC-DC converter unit 2 for outputting the voltage output from the rectifying smoother 1 as a voltage proportional to the number of turns, and the smoothing for smoothing the output voltage of the DC-DC converter unit 2. A current detector 6 and a current detector 6 provided on one of the tracks between the section 3, the DC-DC converter section 2, and the smoothing section 3 to detect a current flowing in the track. Control signal generation section 5 for generating a control signal for controlling the DC-DC converter section 2 in accordance with the detected value. Referring to the operation of the horizontal power supply control circuit of the present invention configured as described above, when the power input voltage is applied to the DC-DC converter section 2 through the rectifying smoothing section 1, the smoothing section passes through the choke transformer T1 for noise suppression. In (3), B-power is output. Here, the current detection unit 6 composed of the transistor Q2 and the resistors R3-R6 is connected via a resistance R3 in the line connecting the DC-DC converter unit 2 and the smoothing unit 3. Transistor Q2 is driven through the line, and the other side of the line is connected to the emitter of transistor Q2 via resistor R4 so that the output voltage of transistor Q2 is distributed by resistors R5 and R6. Will be.
저항(R4)에 의해 검출된 전류는 제어신호발생부(5)의 입력단자(IN)에 인가되어 출력단자(OUT)를 통해 DCㅡDC 콘버터부(2)를 제어할 수 있도록 한다. 즉, DCㅡDC콘버터부(2)를 제어하여 부하변동에 따른 전력손실 및 레귤레이션의 영향을 제거하여 부하에 일정한 전압, 예를 들어 B+ 전원을 계속 공급할 수 있게 된다.The current detected by the resistor R4 is applied to the input terminal IN of the control signal generator 5 to control the DC-DC converter unit 2 through the output terminal OUT. That is, by controlling the DC-DC converter unit 2 to remove the influence of power loss and regulation due to the load fluctuation, it is possible to continue to supply a constant voltage, for example, B + power to the load.
이상 설명항 바와 같이, 본 고안에 따르면 수평편향주파수에 따라 수평편향코일에 흐르는 전류를 감지하여 편향회로에 인가되는 DC전압을 조정해서 편향코일에 흐르는 전류를 항상 일정하게 유지할 수 있게 한다. 대형고해상도 텔레비젼이나 모니터, 멀티동기용 디스플레이기기에 적용해서 안정적인 전압을 공급시킬수 있으므로 타회로에 영향을 줄일수 있는 효과가 있다.As described above, according to the present invention, the current flowing in the horizontal deflection coil is sensed according to the horizontal deflection frequency to adjust the DC voltage applied to the deflection circuit so that the current flowing in the deflection coil can be constantly maintained. It can be applied to large high resolution televisions, monitors, and multi-synchronous display devices, so that stable voltage can be supplied, thereby reducing the effect on other circuits.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910017838U KR940001382Y1 (en) | 1991-10-25 | 1991-10-25 | Horizontal power supply control circuit for tv |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910017838U KR940001382Y1 (en) | 1991-10-25 | 1991-10-25 | Horizontal power supply control circuit for tv |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930009953U KR930009953U (en) | 1993-05-26 |
| KR940001382Y1 true KR940001382Y1 (en) | 1994-03-12 |
Family
ID=19321089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019910017838U KR940001382Y1 (en) | 1991-10-25 | 1991-10-25 | Horizontal power supply control circuit for tv |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940001382Y1 (en) |
-
1991
- 1991-10-25 KR KR2019910017838U patent/KR940001382Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR930009953U (en) | 1993-05-26 |
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