KR20020017606A - Filter for removing ringing of fly back transformer - Google Patents

Filter for removing ringing of fly back transformer Download PDF

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Publication number
KR20020017606A
KR20020017606A KR1020000051070A KR20000051070A KR20020017606A KR 20020017606 A KR20020017606 A KR 20020017606A KR 1020000051070 A KR1020000051070 A KR 1020000051070A KR 20000051070 A KR20000051070 A KR 20000051070A KR 20020017606 A KR20020017606 A KR 20020017606A
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South Korea
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ringing
flyback transformer
waveform
filter
winding coil
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KR1020000051070A
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Korean (ko)
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홍성표
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이형도
삼성전기주식회사
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Priority to KR1020000051070A priority Critical patent/KR20020017606A/en
Publication of KR20020017606A publication Critical patent/KR20020017606A/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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2895—Windings disposed upon ring cores
    • 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)
  • Coils Or Transformers For Communication (AREA)
  • Details Of Television Scanning (AREA)

Abstract

PURPOSE: A ringing removal filter of a flyback transformer is provided to remove ringing waveform of the flyback transformer and restrict an increase in the temperature of the primary coil of the transformer by employing a ringing removal filter between the primary coil and a power supply. CONSTITUTION: A ringing removal filter of a flyback transformer includes a ringing removal filter for attenuating ringing waveform, placed between a power supply(B+) and the primary coil(L1) of the transformer. The ringing removal filter is tuned with the frequency of the ringing waveform to trap the ringing waveform. The ringing removal filter is a ring core.

Description

플라이백 트랜스포머의 링깅제거 필터{FILTER FOR REMOVING RINGING OF FLY BACK TRANSFORMER}FILTER FOR REMOVING RINGING OF FLY BACK TRANSFORMER}

본 발명은 플라이백 트랜스포머의 링깅제거 필터에 관한 것으로, 특히 플라이백트랜스포머의 링깅파형을 제거하고, 1차측 권선의 온도상승을 억제하도록 하는 플라이백 트랜스포머의 링깅제거 필터에 관한 것이다.The present invention relates to an anti-ringing filter of a flyback transformer, and more particularly, to an anti-ringing filter of a flyback transformer to remove the ringing waveform of the flyback transformer and to suppress the temperature rise of the primary winding.

일반적으로, 플라이백트랜스포머(fly back transformer)는 많은 전력을 필요로하는 대형TV나 모니터용으로 사용되는 초고주파 대형수상관 또는 모니터에 고압을 공급한다.In general, fly back transformers supply high voltage to ultra-high frequency water pipes or monitors used for large TVs or monitors that require a lot of power.

이러한 플라이백트랜스의 경우, 1차측 코일과 2차측 코일간의 완벽한 동조가 이루어지는 것이 현실적으로 불가능하므로, 이로인해서, 1차측 코일 및 2차측 코일에는 링깅파형이 발생되므로, 이를 제거하여야, 또한, 상기 플라이백트랜스의 몸체에서 발생되는 열에너지는 대단히 높다. 따라서 최근 대형TV용과 CAD용등과 같은 수상관의 대형화추세로 인한 상기 플라이백트랜스의 발열문제에 대한 해결책이 절실히 요망되고 있다.In the case of such a flyback transformer, since perfect synchronization between the primary coil and the secondary coil is impossible in reality, a ringing waveform is generated in the primary coil and the secondary coil, and thus, the flyback must be removed. The heat energy generated by the body of the transformer is very high. Therefore, there is an urgent need for a solution to the heat generation problem of the flyback transformer due to the trend of the enlargement of the water pipes such as the large TV and CAD.

도 1은 종래의 플라이백트랜스포머의 구성도로서, 도 1을 참조하면, 종래의 플라이백트랜스포머는 내부의 수평출력트랜지스터가 동작하는 시간에 상기 수평출력트랜지스터의 콜렉터측에 발생된 펄스를 플라이백트랜스포머로 출력하는 수평출력부(10)의 출력단에 접속된 1차측 권선코일과 2차측 권선코일을 포함하고, 상기 2차측 권선코일에 발생되는 고전압을 고압정류다이오드가 정류하여 스상관의 애노드단에 고압(Vh))을 제공한다.1 is a block diagram of a conventional flyback transformer. Referring to FIG. 1, a conventional flyback transformer may include a pulse generated on a collector side of a horizontal output transistor at a time when an internal horizontal output transistor operates. It includes a primary winding coil and a secondary winding coil connected to the output terminal of the horizontal output unit 10 for outputting a high voltage, the high voltage rectified diode rectifies the high voltage generated in the secondary winding coil, (Vh)).

이와같이 이루어진 종래의 플라이백 트랜스포머에서는 링깅파형을 제거하기위해서, ABL(Auto Beam current Limited)단에 L-R회로를 사용하는 방법과 도 1에 도시한 바와같이, 다이오드를 사용하는 방법이 있는데, L-R회로를 사용하는 종래 방법은 링깅(ringing)파형은 줄지만, 권선코일의 온도가 상승하는 문제점이 있으며, 또한, 다이오드를 사용하는 종래 방법은 권선코일의 온도는 낮아지지만, 링깅파형이 상승한다는 문제점이 있었던 것이다.In the conventional flyback transformer made in this way, in order to remove the ringing waveform, there is a method of using an LR circuit at an ABL (Auto Beam current Limited) stage and a method of using a diode as shown in FIG. 1. The conventional method used has a problem that the ringing waveform is reduced, but the coiling coil temperature increases, and the conventional method using a diode has a problem that the coiling coil temperature is lowered, but the ringing waveform is raised. will be.

본 발명은 상기한 문제점을 해결하기 위해 안출한 것으로, 따라서, 본 발명의 목적은 플라이백트랜스포머의 1차측 권선코일과 전원단 사이에 링깅제거 필터를 채용함으로서, 플라이백트랜스포머의 링깅파형을 제거함과 동시에, 1차측 권선의 온도상승을 억제하도록 하는 플라이백 트랜스포머의 링깅제거 필터를 제공하는데 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems. Accordingly, an object of the present invention is to remove a ringing waveform of a flyback transformer by employing a ringing removal filter between the primary winding coil of the flyback transformer and the power supply stage. At the same time, it is to provide an anti-ringing filter of a flyback transformer to suppress the temperature rise of the primary winding.

도 1은 종래의 플라이백트랜스포머의 구성도이다.1 is a block diagram of a conventional flyback transformer.

도 2는 본 발명에 따른 플라이백트랜스포머의 구성도이다.2 is a block diagram of a flyback transformer according to the present invention.

도 3a는 종래 플라이백트랜스포머의 삼각파 특성그래프이고, 도3b는 본 발명의 플라이백트랜스포머의 삼각파 특성 그래프이다.Figure 3a is a graph of the triangular wave characteristics of the conventional flyback transformer, Figure 3b is a graph of the triangular wave characteristics of the flyback transformer of the present invention.

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

10 : 수평출력부 20 : 플라이백트랜스포머10: horizontal output unit 20: flyback transformer

30 : 링깅 제거필터30: ringing removal filter

상기한 본 발명의 목적을 달성하기 위한 기술적인 수단으로써, 본 발명은 수평출력부의 출력단에 일단이 접속되고, 타단이 전원단에 접속된 1차측 권선코일을 포함하는 플라이백 트랜스포머의 링깅제거 필터에 있어서, 상기 전원단와 1차측 권선코일 사이에 링깅파형을 감쇄시키는 링깅제거 필터를 구비하고, 상기 링깅제거 필터는 링깅파형의 주파수에 동조되어 링깅파형을 트랩시키도록 하는 것을 특징으로 한다.As a technical means for achieving the above object of the present invention, the present invention is connected to the output terminal of the horizontal output unit, the other end is connected to the power supply terminal, the ringing removal filter of the flyback transformer comprising a primary winding coil And a ringing elimination filter for attenuating the ringing waveform between the power supply stage and the primary winding coil, wherein the ringing elimination filter is tuned to a frequency of the ringing waveform to trap the ringing waveform.

이하, 본 발명에 따른 플라이백 트랜스포머의 링깅제거 필터에 대해서 첨부한 도면을 참조하여 상세하게 설명한다. 본 발명에 참조된 도면에서 실질적으로 동일한 구성과 기능을 가진 구성요소들은 동일한 부호를 사용할 것이다.Hereinafter, a ringing removal filter of a flyback transformer according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings referred to in the present invention, components having substantially the same configuration and function will use the same reference numerals.

도 2는 본 발명에 따른 플라이백트랜스포머의 구성도로서, 도 2를 참조하면, 본 발명이 적용되는 플라이백 트랜스포머(20)는 내부의 수평출력트랜지스터가 동작하는 시간에 상기 수평출력트랜지스터의 콜렉터측에 발생된 삼각펄스파(삼각파)를 력하는 수평출력부(10)의 출력단에 접속된 1차측 권선코일(L1)과, 이 1차측 권선코일(L1)의 삼각파형을 승압하는 2차측 권선코일(L21-L25)을 포함하고, 상기 2차측 권선코일(L21-L25)에 발생되는 고전압을 정류하여 수상관의 애노드단에 고압(Vh))을 제공하는 정류다이오드(D22-D26)와, 상기 2차측 권선코일(L21)과 ABL단간에 접접속되어 2차측 링깅파형을 감소시키는 다이오드(D21)를 포함하고 있다.FIG. 2 is a configuration diagram of a flyback transformer according to the present invention. Referring to FIG. 2, the flyback transformer 20 to which the present invention is applied has a collector side of the horizontal output transistor at a time when an internal horizontal output transistor operates. The primary winding coil L1 connected to the output terminal of the horizontal output unit 10 for outputting the triangular pulse wave (triangle wave) generated by the secondary winding coil and the secondary winding coil for boosting the triangular waveform of the primary winding coil L1. Rectifier diodes (D22-D26) including (L21-L25) and rectifying the high voltage generated in the secondary winding coil (L21-L25) to provide a high voltage (Vh) to the anode end of the water pipe. A diode D21 is connected between the secondary winding coil L21 and the ABL end to reduce the secondary side ringing waveform.

이러한 플라이백 트랜스포머에서, 본 발명에 따른 플라이백 트랜스포머의 링깅제거 필터(30)는 상기 전원단(B+)와 1차측 권선코일(L1) 사이에 링깅파형을 감쇄시키도록 구성하고, 상기 링깅제거 필터(30)는 링깅파형의 주파수에 동조되어 링깅파형을 트랩시키도록 구성한다.In such a flyback transformer, the ringing removal filter 30 of the flyback transformer according to the present invention is configured to attenuate the ringing waveform between the power supply terminal B + and the primary winding coil L1, and the ringing removal filter 30 is configured to tune to the frequency of the ringing waveform to trap the ringing waveform.

상기 링깅제거 필터(30)는 상기 전원단(B+)과 1차측 권선코일(L1) 사이의 전선에 끼워진 링코어를 적용한다.The ringing elimination filter 30 applies a ring core fitted to an electric wire between the power supply terminal B + and the primary winding coil L1.

도 3a는 종래 플라이백트랜스포머의 삼각파 특성그래프이고, 도3b는 본 발명의 플라이백트랜스포머의 삼각파 특성 그래프이다.Figure 3a is a graph of the triangular wave characteristics of the conventional flyback transformer, Figure 3b is a graph of the triangular wave characteristics of the flyback transformer of the present invention.

이와같이 구성된 본 발명에 따른 동작을 첨부도면에 의거하여 하기에 상세히 설명한다.Operation according to the present invention configured as described above will be described in detail below based on the accompanying drawings.

종래의 플라이백 트랜스포머에서는 링깅파형을 제거하기 위해서, ABL(Auto Beam current Limited)단에 L-R회로를 사용하는 방법과 다이오드를 사용하는 방법이 있는데, L-R회로를 사용하는 종래 방법은 링깅(ringing)파형은 줄지만, 권선코일의 온도가 상승하는 문제점이 있으며, 또한, 다이오드를 사용하는 종래 방법은 권선코일의 온도는 낮아지지만, 링깅파형이 상승한다는 문제점이 있었던 것이다.In the conventional flyback transformer, in order to remove the ringing waveform, there are a method of using an LR circuit and a diode in an ABL (Auto Beam current Limited) stage. A conventional method of using an LR circuit has a ringing waveform. Although it is reduced, there is a problem that the temperature of the winding coil rises, and the conventional method of using a diode has a problem that the ring coil waveform rises, although the temperature of the winding coil decreases.

따라서, ABL단에 다이오드를 사용하면서 링깅을 제거할 수 있도록 하는 것이 필요하며, 이러한 링깅제거 방법으로는 전원단(B+)과 1차측 권선코일(L1)간에 링깅제거용 필터를 추가한다면, 온도 및 링깅파형을 감소시킬 수 있게 된다.Therefore, it is necessary to remove ringing while using a diode in the ABL stage. If the ringing removing filter is added between the power supply stage B + and the primary winding coil L1, the temperature and It is possible to reduce the ringing waveform.

이에 따라서, 본 발명에서는 상기 전원단(B+)와 1차측 권선코일(L1) 사이에 링깅파형을 감쇄시키는 링깅제거 필터(30)를 구비하고, 상기 링깅제거 필터는 링깅파형의 주파수에 동조되어 링깅파형을 트랩시키도록 구성하였다.Accordingly, in the present invention, there is provided a ringing elimination filter 30 for attenuating a ringing waveform between the power supply terminal B + and the primary winding coil L1, wherein the ringing elimination filter is tuned to a frequency of a ringing waveform to ringing. The waveform was configured to trap.

그리고, 상기 링깅제거 필터(30)는 본 발명의 바람직한 실시예에서는 상기 전원단(B+)과 1차측 권선코일(L1) 사이의 전선에 끼워진 링코어를 적용하였다.In the preferred embodiment of the present invention, the ringing elimination filter 30 applies a ring core fitted to an electric wire between the power supply terminal B + and the primary winding coil L1.

이와같은 본 발명에 따른 링깅 제거 필터를 사용하면, 저렴하면서 소형으로 제작가능함과 동시에, 공압강하를 적게 하도록 할 수 있다.Using such a ringing elimination filter according to the present invention can be made inexpensive and compact, and at the same time can reduce the pneumatic drop.

한편, 링깅발생과 감쇠의 조건을 검토해 보면, 플라이백 트랜스포머의 링깅이 발생하는 원인을 이해할 필요가 있는데, 이 플라이백 트랜스포머에서 링깅발생 원을 간단히 설명하면 다음과 같다.On the other hand, when the conditions of ringing generation and attenuation are examined, it is necessary to understand the cause of ringing of the flyback transformer. The source of ringing in the flyback transformer is briefly described as follows.

단순하게, 플라이백 트랜스포머의 고압(HV) 코일의 분포용량 "C"와 저압-고압 코일간 누설 인덕턴스 "L"의 공진회로에 있어서, 1차측에 환산한 등가회로는 상기 "L"과 "C"의 병렬회로에 저항(R)을 통해 전원(E)가 인가되는 호히로가 된다.Simply, in the resonant circuit of the distribution capacity "C" of the high voltage (HV) coil of the flyback transformer and the leakage inductance "L" of the low-high voltage coil, the equivalent circuit converted to the primary side is the "L" and "C". The parallel circuit of "H" is applied to the power supply E through the resistor R.

이 회로의 방정식은 하기 수학식1 및 2에 도시한 바와같이 된다.The equation of this circuit is as shown in the following equations (1) and (2).

상기 수학식1 및 2로부터 하기 수학식3이 유도된다.Equation 3 is derived from Equations 1 and 2 above.

이때, "d/dt=p"로 놓으면, 특정방정식의 해, 즉 P1,P2는 하기 수학식4에 보인 바와같이 된다.At this time, if " d / dt = p ", the solution of the specific equation, that is, P1 and P2 is as shown in Equation 4 below.

아 공진회로에서 진동이 감쇠하는 조건은 이 특성방정식의 해가 실근을 갖도록 하는 것으로, 이 조건은 하기 수학식5에 보인 바와같다.In the resonant circuit, the condition that the vibration attenuates is such that the solution of this characteristic equation has a real root, and this condition is as shown in Equation 5 below.

상기 수학식5를 만족하는 저항 "R"값을 1차측 회로에 삽입하면 되는 것이다.What is necessary is just to insert the resistance "R" value which satisfy | fills said Formula (5) to a primary side circuit.

전술한 바에 따라, 도 2를 참조하여 본 발명의 링깅제거 필터에 대해서 설명하면, 상기 수학식5를 만족시키는 저항 "R"으로는, 상기에서 언급한 바와같이 전원단(B+)과 1차측간의 전선에 끼워 넣은 원통형 링코어를 제안하는 것이다.As described above, with reference to FIG. 2, the ringing elimination filter of the present invention will be described. As a resistor "R" satisfying Equation 5, the power supply terminal B + and the primary side, as mentioned above, are described. It is proposed a cylindrical ring core inserted into an electric wire.

이때, 원통형 링코어은 링깅 주파수에서 "Z≤R"을 만족하는 임피던스 특성을 갖으면 된다. 이 링코어의 인덕턴스 "L"은 하기 수학식6에 보인 바와같다.In this case, the cylindrical ring core may have an impedance characteristic satisfying "Z≤R" at the ringing frequency. The inductance "L" of this ring core is as shown in Equation 6 below.

여기서, a는 링코어의 두께(외면과 내면간 거리)이고, d는 링코어의 관통구의 반경이다.Where a is the thickness of the ring core (distance between the outer surface and the inner surface) and d is the radius of the through hole of the ring core.

그리고, 링코어의 재질은 Mn-Zn 재질을 사용하면 기본주파수에서임피던스"Z"가 작아서, 링깅 주파수 부근에서 큰 임피던스 소자를 얻을 수 있다.When the Mn-Zn material is used for the ring core material, the impedance "Z" is small at the fundamental frequency, and a large impedance element can be obtained near the ringing frequency.

다른한편, 도 3a에 도시된 종래의 플라이백 트랜스포머의 삼각파 특성과, 도 3b에 도시한 본 발명에 따른 플라이백 트랜스포머의 삼각파 특성을 비교하여 살펴보면 알 수 있는 바와같이, 본 발명의 플라이백 트랜스포머에서의 삼각파에서, 삼각파의 링깅파형이 감소되었음을 알 수 있다.On the other hand, as can be seen by comparing the triangular wave characteristics of the conventional flyback transformer shown in Figure 3a and the flyback transformer according to the present invention shown in Figure 3b, in the flyback transformer of the present invention In the triangular wave of, it can be seen that the ringing waveform of the triangular wave is reduced.

상술한 바와같은 본 발명에 따르면, 플라이백트랜스포머의 1차측 권선코일과 전원단 사이에 링깅제거 필터를 채용함으로서, 플라이백트랜스포머의 링깅파형을 제거함과 동시에, 1차측 권선의 온도상승을 억제하도록 하는 특별한 효과가 있는 것이다.According to the present invention as described above, by employing a ringing removing filter between the primary winding coil and the power supply end of the flyback transformer, while eliminating the ringing waveform of the flyback transformer, to suppress the temperature rise of the primary winding There is a special effect.

이상의 설명은 본 발명의 일실시예에 대한 설명에 불과하며, 본 발명은 그 구성의 범위내에서 다양한 변경 및 개조가 가능하다.The above description is only a description of one embodiment of the present invention, the present invention is capable of various changes and modifications within the scope of the configuration.

Claims (2)

수평출력부(10)의 출력단에 일단이 접속되고, 타단이 전원단(B+)에 접속된 1차측 권선코일(L1)을 포함하는 플라이백 트랜스포머의 링깅제거 필터에 있어서,In the ringing removal filter of the flyback transformer comprising a primary winding coil L1 having one end connected to an output end of the horizontal output unit 10 and the other end connected to a power supply end B +, 상기 전원단(B+)와 1차측 권선코일(L1) 사이에 링깅파형을 감쇄시키는 링깅제거 필터(30)를 구비하고,A ringing removal filter 30 for attenuating a ringing waveform between the power supply terminal B + and the primary winding coil L1; 상기 링깅제거 필터는 링깅파형의 주파수에 동조되어 링깅파형을 트랩시키도록 하는 것을 특징으로 하는 플라이백 트랜스포머의 링깅제거 필터.The ringing elimination filter is tuned to a frequency of the ringing waveform to trap the ringing waveform. 제1항에 있어서, 상기 링깅제거 필터(30)는The method of claim 1, wherein the anti-ringing filter 30 상기 전원단(B+)과 1차측 권선코일(L1) 사이의 전선에 끼워진 링코어임을 특징으로 하는 플라이백 트랜스포머의 링깅제거 필터.And a ring core fitted to an electric wire between the power supply terminal (B +) and the primary winding coil (L1).
KR1020000051070A 2000-08-31 2000-08-31 Filter for removing ringing of fly back transformer KR20020017606A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900011047Y1 (en) * 1986-05-16 1990-12-14 미쓰비시 긴소꾸 가부시기가이샤 Throw away tip
JPH03109876A (en) * 1989-09-25 1991-05-09 Hitachi Ltd Ringing elimination system
JPH03112276A (en) * 1989-09-27 1991-05-13 Hitachi Ltd Ringing compensation circuit
JPH0730777A (en) * 1993-07-07 1995-01-31 Nec Corp Ringing suppression circuit
KR970019591U (en) * 1995-10-19 1997-05-26 Noise Canceling Device for Flyback Transformer
KR970026205U (en) * 1995-11-23 1997-06-20 Horizontal output transistor protection circuit
KR20000010487U (en) * 1998-11-23 2000-06-15 구자홍 Damper Circuit for Flyback Transformer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900011047Y1 (en) * 1986-05-16 1990-12-14 미쓰비시 긴소꾸 가부시기가이샤 Throw away tip
JPH03109876A (en) * 1989-09-25 1991-05-09 Hitachi Ltd Ringing elimination system
JPH03112276A (en) * 1989-09-27 1991-05-13 Hitachi Ltd Ringing compensation circuit
JPH0730777A (en) * 1993-07-07 1995-01-31 Nec Corp Ringing suppression circuit
KR970019591U (en) * 1995-10-19 1997-05-26 Noise Canceling Device for Flyback Transformer
KR970026205U (en) * 1995-11-23 1997-06-20 Horizontal output transistor protection circuit
KR20000010487U (en) * 1998-11-23 2000-06-15 구자홍 Damper Circuit for Flyback Transformer

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