JPS6322147B2 - - Google Patents
Info
- Publication number
- JPS6322147B2 JPS6322147B2 JP56016547A JP1654781A JPS6322147B2 JP S6322147 B2 JPS6322147 B2 JP S6322147B2 JP 56016547 A JP56016547 A JP 56016547A JP 1654781 A JP1654781 A JP 1654781A JP S6322147 B2 JPS6322147 B2 JP S6322147B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- diode
- ringing
- circuit
- voltage coil
- 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
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/338—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
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】
本発明はテレビジヨン受像機に使用されるフラ
イバツクトランスに係り、リンギングの影響をな
くして良好な画像を得ることを目的とするもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flyback transformer used in a television receiver, and an object thereof is to eliminate the influence of ringing and obtain a good image.
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（約
40KHz）より遥かに高い周波数（100KHz〜1M
Hz）の高調波が発生し、パルスにリンギングとな
つて重畳する。このエネルギーは容量結合或は電
磁結合によつてテレビジヨン受像機の回路の各部
へ波及し、その結果ブラウン管の画面に明暗の縦
縞模様となつて現われ、画質の低下を来たす。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配慮を払つて設計し、又
回路部品を付加し或はフライバツクトランスの高
調波の周波数分布とそのＱの精密な調整を行なう
などの多くの手間と時間を要している。 In conventional flyback transformers, the fundamental wave of the flyback pulse (approximately
40KHz) much higher frequency (100KHz~1M
Hz) harmonics are generated and superimposed on the pulse as ringing. This energy spreads to various parts of the circuit of the television receiver through capacitive coupling or electromagnetic coupling, and as a result, a pattern of bright and dark vertical stripes appears on the screen of the cathode ray tube, resulting in a reduction in image quality. In order to alleviate such effects, we pay close attention to the design of printed circuits and lead wire wiring, add circuit components, or precisely adjust the frequency distribution of the harmonics of the flyback transformer and its Q. It takes a lot of effort and time to make adjustments.
本発明はフライバツクトランスに発生したリン
ギングエネルギを抵抗部品で消費させることによ
つてブラウン管の画面に現われる明暗の縦縞模様
をなくし、良質な画像が得られるようにしたもの
で、以下図面を参照して実施例について説明す
る。 The present invention eliminates the vertical striped pattern of brightness and darkness that appears on the screen of a cathode ray tube by consuming the ringing energy generated in the flyback transformer with a resistor component, thereby making it possible to obtain a high-quality image. Examples will now be described.
第１図は本発明の一実施例の回路図を示す。図
において、１はフライバツクトランスの出力コイ
ル（一次コイル）、２は二次側の低圧コイル、３
は高圧コイルで、高圧コイル３は複数個のコイル
（図では３個）３ａ，３ｂ，３ｃに分割され、分
割された各コイルは互いにダイオード４を介して
直列に接続され、そのうちの１つのコイル（図で
はコイル３ｃ）に、コンデンサ５と抵抗６の並列
回路にダイオード７を直列に接続した回路が並列
に接続されている。ダイオード７はコイルの高圧
側がダイオードのカソード側と一致するように接
続し、このコンデンサ５を含む抵抗６とダイオー
ド７の直列回路は、分割された高圧コイル３ａ，
３ｂ，３ｃの少なくとも１つ以上のものに任意の
個数接続するものとする。 FIG. 1 shows a circuit diagram of an embodiment of the present invention. In the figure, 1 is the output coil (primary coil) of the flyback transformer, 2 is the secondary low voltage coil, and 3 is the output coil (primary coil) of the flyback transformer.
is a high-voltage coil, and the high-voltage coil 3 is divided into multiple coils (three in the figure) 3a, 3b, and 3c, and each divided coil is connected in series with each other via a diode 4, and one of the coils A circuit in which a diode 7 is connected in series to a parallel circuit of a capacitor 5 and a resistor 6 is connected in parallel to the coil 3c (in the figure). The diode 7 is connected so that the high voltage side of the coil coincides with the cathode side of the diode, and the series circuit of the resistor 6 including the capacitor 5 and the diode 7 is connected to the divided high voltage coil 3a,
It is assumed that an arbitrary number of them are connected to at least one of 3b and 3c.
上述の回路において、ダイオード４で挟まれた
分割高圧コイル３ｃの高圧側には、低圧側電位を
０とすると、前記直列回路がない場合には、第２
図に示すようなフライバツクパルスが発生し、こ
のフライバツクパルスには前述のリンギング電圧
が重畳している。本発明の回路では、このフライ
バツクパルスの負の部分は前記直列回路のダイオ
ード７により整流され、コンデンサ５により平滑
化され、抵抗６を流れることによつてその電力が
消費される。その結果、この部分の高圧コイルに
発生したリンギングは、そのエネルギを急速に失
い減衰する。 In the above circuit, if the low voltage side potential is 0 on the high voltage side of the divided high voltage coil 3c sandwiched between the diodes 4, the second
A flyback pulse as shown in the figure is generated, and the aforementioned ringing voltage is superimposed on this flyback pulse. In the circuit of the present invention, the negative part of this flyback pulse is rectified by the diode 7 of the series circuit, smoothed by the capacitor 5, and flows through the resistor 6, thereby consuming its power. As a result, the ringing generated in the high voltage coil in this area rapidly loses its energy and attenuates.
実験によれば、コンデンサ５の静電容量は
20pF以上で効果を有し、又抵抗６の値は10MΩ
以下で効果が現われる。抵抗値が低い程リンギン
グは小さくなるが、電力損失が増大するので、
1MΩ以上が望ましい。このようなダイオード７、
コンデンサ５、抵抗６より成るリンギング減衰回
路を分割された各高圧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。なお、本発明は、高圧コイルが複数個
に分割されず、全体が１つのコイルで作られてい
る場合にも適用することができる。 According to experiments, the capacitance of capacitor 5 is
Effective at 20pF or more, and the value of resistor 6 is 10MΩ
The effect appears below. The lower the resistance value, the smaller the ringing will be, but the power loss will increase, so
1MΩ or more is desirable. A diode 7 like this,
By adding a ringing damping circuit consisting of a capacitor 5 and a resistor 6 to each divided high voltage coil, the adverse effects of ringing can be significantly suppressed. Note that the present invention can also be applied to a case where the high-voltage coil is not divided into a plurality of pieces, but is made entirely of one coil.
以上のように本発明は、フライバツクトランス
のリンギングを発生源である高圧コイルにおいて
直接減衰させるものであつて、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るもの
である。 As described above, the present invention directly attenuates the ringing of the flyback transformer in the high-voltage coil, which is the source of the ringing, and can fundamentally eliminate the deterioration in image quality caused by the ringing.
第１図は本発明のフライバツクトランスの一実
施例の回路図、第２図はその動作説明図である。
１……（一次）出力コイル、２……（二次）低
圧コイル、３……高圧コイル、４，７……ダイオ
ード、５……コンデンサ、６……抵抗。
FIG. 1 is a circuit diagram of an embodiment of the flyback transformer of the present invention, and FIG. 2 is an explanatory diagram of its operation. 1... (primary) output coil, 2... (secondary) low voltage coil, 3... high voltage coil, 4, 7... diode, 5... capacitor, 6... resistor.
Claims (1)
し、前記第１のダイオードと逆極性に接続した第
２のダイオードを介してコンデンサと抵抗の並列
回路を前記高圧コイルの一部又は全部に並列に接
続したことを特徴とするフライバツクトランス。1. A first diode is connected in series to the high-voltage coil, and a parallel circuit of a capacitor and a resistor is connected in parallel to part or all of the high-voltage coil through a second diode connected with the opposite polarity to the first diode. A flyback transformer characterized by being connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56016547A JPS57132767A (en) | 1981-02-05 | 1981-02-05 | Flyback transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56016547A JPS57132767A (en) | 1981-02-05 | 1981-02-05 | Flyback transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57132767A JPS57132767A (en) | 1982-08-17 |
| JPS6322147B2 true JPS6322147B2 (en) | 1988-05-10 |
Family
ID=11919287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56016547A Granted JPS57132767A (en) | 1981-02-05 | 1981-02-05 | Flyback transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57132767A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61251373A (en) * | 1985-04-30 | 1986-11-08 | Nec Home Electronics Ltd | Deflecting circuit |
| JPS63144766A (en) * | 1986-12-06 | 1988-06-16 | Matsushita Electric Ind Co Ltd | Flyback transformer |
| JPS63174768U (en) * | 1987-04-16 | 1988-11-14 | ||
| CN113544224B (en) | 2019-03-06 | 2023-05-23 | 富士胶片株式会社 | Inkjet ink composition, image recording method, and image recorded matter |
-
1981
- 1981-02-05 JP JP56016547A patent/JPS57132767A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57132767A (en) | 1982-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3828239A (en) | High dc voltage generating circuit | |
| US3866086A (en) | Flyback transformer apparatus | |
| US3665288A (en) | Television sweep transformer | |
| JPS6322147B2 (en) | ||
| US3814981A (en) | Horizontal centering circuit | |
| US4689730A (en) | Flyback transformer circuit with a noise cancelling circuit | |
| JPS62274876A (en) | Television display | |
| DE3688845T2 (en) | Demagnetizing circuit for a cathode ray tube. | |
| US4394722A (en) | Television receiver high voltage generator | |
| JPH0139202B2 (en) | ||
| US5043638A (en) | Dynamic focus adjusting voltage generating circuit | |
| JPS6122847B2 (en) | ||
| US4808891A (en) | High voltage generator | |
| JP3217588B2 (en) | Method of suppressing unnecessary electric field | |
| JPH0415664B2 (en) | ||
| US3786299A (en) | Eht supply particularly for television receivers | |
| US3480825A (en) | Detected boost voltage supply | |
| JPS5821354Y2 (en) | Flyback transformer device | |
| JPS5812544Y2 (en) | Flyback transformer device | |
| KR0116714Y1 (en) | Flyback transformer | |
| JPS6154881A (en) | High voltage generator | |
| JPS6020883B2 (en) | flyback transformer | |
| JPH01175465A (en) | Laminate winding fly-back transformer | |
| JPS60210167A (en) | Flyback transformer | |
| KR910000547B1 (en) | Electron beam deflecting circuit |