JPH0139202B2 - - Google Patents
Info
- Publication number
- JPH0139202B2 JPH0139202B2 JP55138158A JP13815880A JPH0139202B2 JP H0139202 B2 JPH0139202 B2 JP H0139202B2 JP 55138158 A JP55138158 A JP 55138158A JP 13815880 A JP13815880 A JP 13815880A JP H0139202 B2 JPH0139202 B2 JP H0139202B2
- Authority
- JP
- Japan
- Prior art keywords
- ringing
- coil
- resistor
- voltage
- frequency
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/10—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in series, e.g. for multiplication of voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Details Of Television Scanning (AREA)
- Coils Or Transformers For Communication (AREA)
- Rectifiers (AREA)
Description
【発明の詳細な説明】
本発明はリンギングエネルギーを抵抗により消
費させて陰極線管の画面に明暗の縦縞が発生しな
いようにしたフライバツクトランスに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flyback transformer in which ringing energy is consumed by a resistor to prevent bright and dark vertical stripes from occurring on the screen of a cathode ray tube.
従来のフライバツクトランスは、二次側の高圧
コイルが有する分布容量と、リーケージインダク
タンスによつてフライバツクパルスの基本波より
はるかに高い周波数の高調波が発生し、フライバ
ツクパルスにリンギングとなつて重畳される。こ
のリンギングエネルギーは容量結合あるいは電磁
結合によつてテレビジヨンセツトの回路の各部へ
波及し、その結果陰極線管の画面に明暗の縦縞と
なつてあらわれ、画質の低下をきたしている。 In conventional flyback transformers, harmonics with a frequency much higher than the fundamental wave of the flyback pulse are generated due to the distributed capacitance and leakage inductance of the high-voltage coil on the secondary side, causing ringing in the flyback pulse. Superimposed. This ringing energy spreads to various parts of the television set's circuitry through capacitive coupling or electromagnetic coupling, and as a result, vertical stripes of brightness and darkness appear on the screen of the cathode ray tube, deteriorating the picture quality.
このような影響を緩和するためにプリント回路
やリード線の配線に細心の注意と工夫をもつて設
計し、また、回路部品の追加をしたり、フライバ
ツクトランスの高調波周波数分布と、そのＱの複
雑な調整を行つたりして多大の設計時間と費用、
労力を要してきた。 To alleviate such effects, we design printed circuits and lead wire wiring with great care and ingenuity, add circuit components, and improve the harmonic frequency distribution of the flyback transformer and its Q. It takes a lot of design time and money to make complicated adjustments.
It has taken a lot of effort.
また、調整すべき目的とする周波数のＱを低下
させるためには、二次側高圧コイルの巻数および
巻線の分布状態を変えることにより達成してい
た。この結果、各コイル間で発生する高周波のリ
ンギング合成波形の波高値をある程度小さくでき
るが、逆に、結合度が低下し、このため二次側高
圧出力電圧の負荷変動が大きくなつてしまうとい
う欠点があつた。 Furthermore, lowering the Q of the target frequency to be adjusted has been achieved by changing the number of turns of the secondary high-voltage coil and the distribution state of the windings. As a result, the peak value of the high-frequency ringing composite waveform generated between each coil can be reduced to some extent, but the disadvantage is that the degree of coupling decreases, which increases the load fluctuation of the secondary high-voltage output voltage. It was hot.
本発明は上述のようなリンギングによつて陰極
線管の画面にあらわれる明暗の縦縞を無くし良質
な画像を提供することのできるフライバツクトラ
ンスを提供しようとするものである。 The present invention aims to provide a flyback transformer that can eliminate the vertical stripes of brightness and darkness that appear on the screen of a cathode ray tube due to the ringing described above and can provide a high quality image.
以下、本発明の実施例を図面とともに説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
図面において１は一次コイル、２は二次側低圧
コイル、３ａ，３ｂ，３ｃは二次側高圧コイル３
を構成する部分コイル、４はこの部分コイル３ａ
〜３ｃの両端に接続されたダイオード、５はコン
デンサ、６は抵抗で、コンデンサ５と抵抗６は直
列に接続され低圧側の部分コイル３ａに並列に接
続されている。 In the drawings, 1 is the primary coil, 2 is the secondary low voltage coil, and 3a, 3b, 3c are the secondary high voltage coil 3.
4 is this partial coil 3a.
A diode is connected to both ends of 3c, 5 is a capacitor, and 6 is a resistor. The capacitor 5 and the resistor 6 are connected in series and connected in parallel to the partial coil 3a on the low voltage side.
なお、このコンデンサ５と抵抗６の直列回路は
部分コイル３ａ〜３ｃの少なくとも１つに並列に
接続されればよく、複数の部分コイル３ａ〜３ｃ
に接続してもよい。 The series circuit of the capacitor 5 and the resistor 6 only needs to be connected in parallel to at least one of the partial coils 3a to 3c.
May be connected to.
このような構成で、二次側高圧コイル３に誘起
されるフライバツクパルスは、周波数約40KHzの
正弦波に近い基本波に周波数が一般に100KHz以
上の高調波が複雑に重畳したリンギングを伴つた
ものとなる。このように高圧コイル３の各部分コ
イル３ａ〜３ｃの両端には高周波のリンギングが
重なり合つたフライバツクパルス電圧が発生する
が、この両端に前記直列回路を接続すると、この
直列回路は高周波になるほどインピーダンスが低
下するため、適切な回路定数を選ぶことによりリ
ンギングによる電流を多く流し、基本パルスによ
る電流はほとんど流さないようにすることができ
る。そして、この直列回路は抵抗６を含むため、
リンギング電流はこの抵抗６で消費するため、リ
ンギングエネルギーは熱エネルギーに変換され、
急速に減衰する。 With this configuration, the flyback pulse induced in the secondary high-voltage coil 3 is accompanied by ringing, which is a complex superposition of harmonics with a frequency of generally 100 KHz or more on a fundamental wave close to a sine wave with a frequency of about 40 KHz. becomes. In this way, a flyback pulse voltage in which high-frequency ringing is superimposed is generated at both ends of each partial coil 3a to 3c of the high-voltage coil 3. When the series circuit is connected to both ends of the flyback pulse voltage, the series circuit becomes high-frequency. Since the impedance decreases, by selecting appropriate circuit constants, it is possible to allow a large amount of current to flow due to ringing and to allow almost no current to flow due to fundamental pulses. And since this series circuit includes resistor 6,
Since the ringing current is consumed by this resistor 6, the ringing energy is converted into thermal energy,
Decay rapidly.
以上の説明による作用を効果的に行なうために
は、高調波が基本波に対してできるだけ高い方が
よい。実験によれば、高調波の周波数が約400K
Hzのものについて静電容量200PF以上、低抗値
300Ω以上で顕著なリンギングの減少が得られた。 In order to effectively perform the action described above, it is preferable that the harmonics be as high as possible with respect to the fundamental wave. According to experiments, the harmonic frequency is approximately 400K.
Hz capacitance 200PF or more, low resistance value
A significant reduction in ringing was obtained above 300Ω.
このように必要な静電容量が小さいため、市販
のコンデンサを使用できるとともに、フライバツ
クトランスの注型樹脂を誘電体として用いて各種
分布容量を利用して上述の抵抗との直列回路を構
成することも十分可能である。 Since the required capacitance is small in this way, a commercially available capacitor can be used, and a series circuit with the above-mentioned resistor can be constructed by using the cast resin of the flyback transformer as a dielectric and utilizing various distributed capacitances. It is also quite possible.
また、このようなコンデンサと抵抗の直列回路
よりなるリンギング減衰回路を各部分コイルに付
加することによつて、リンギングの悪影響を顕著
に抑制することができる。 Further, by adding a ringing attenuation circuit made of such a series circuit of a capacitor and a resistor to each partial coil, the adverse effects of ringing can be significantly suppressed.
また、目的とする周波数のＱが小さくなるた
め、二次側高圧コイルの巻数および巻線の分布状
態を変える必要がなく、この結果、最大の結合度
とすることができ、二次側高圧出力電圧の負荷変
動を小さくできる。 In addition, since the Q of the target frequency becomes small, there is no need to change the number of turns or the distribution of the windings in the secondary high-voltage coil.As a result, the degree of coupling can be maximized, and the secondary high-voltage output Voltage load fluctuations can be reduced.
以上のように本発明のフライバツクトランスは
構成されるため、リンギングの発生源である二次
側高圧コイルで直接このリンギングを減衰させる
ことで構成としても簡単でリンギングによる画質
の低下を根本的に解消することができ、工業的価
値の大なるものである。 Since the flyback transformer of the present invention is constructed as described above, the structure is simple and the deterioration of image quality due to ringing can be fundamentally prevented by directly attenuating the ringing in the secondary high-voltage coil, which is the source of ringing. It can be solved and has great industrial value.
図面は本発明のフライバツクトランスの一実施
例を示す電気的回路図である。
１……一次コイル、２……二次側低圧コイル、
３……高圧コイル、３ａ〜３ｃ……部分コイル、
４……ダイオード、５……コンデンサ、６……抵
抗。
The drawing is an electrical circuit diagram showing an embodiment of the flyback transformer of the present invention. 1...Primary coil, 2...Secondary low voltage coil,
3...High voltage coil, 3a to 3c...Partial coil,
4...Diode, 5...Capacitor, 6...Resistor.
Claims (1)
列接続し、前記複数個の二次側高圧コイルのうち
の少なくともいずれか１個の二次側高圧コイルに
コンデンサと抵抗の直列回路を並列に接続したフ
ライバツクトランス。1 A plurality of secondary high-voltage coils are connected in series with diodes, and a series circuit of a capacitor and a resistor is connected in parallel to at least one of the plurality of secondary high-voltage coils. flyback transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55138158A JPS5762777A (en) | 1980-10-01 | 1980-10-01 | Flyback transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55138158A JPS5762777A (en) | 1980-10-01 | 1980-10-01 | Flyback transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5762777A JPS5762777A (en) | 1982-04-15 |
| JPH0139202B2 true JPH0139202B2 (en) | 1989-08-18 |
Family
ID=15215369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55138158A Granted JPS5762777A (en) | 1980-10-01 | 1980-10-01 | Flyback transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5762777A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6012866A (en) * | 1983-07-01 | 1985-01-23 | Hitachi Ltd | Rc network circuit |
| JPS60190075A (en) * | 1984-03-09 | 1985-09-27 | Tdk Corp | High voltage transformer |
-
1980
- 1980-10-01 JP JP55138158A patent/JPS5762777A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5762777A (en) | 1982-04-15 |
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