JPS6110381Y2 - - Google Patents
Info
- Publication number
- JPS6110381Y2 JPS6110381Y2 JP6387379U JP6387379U JPS6110381Y2 JP S6110381 Y2 JPS6110381 Y2 JP S6110381Y2 JP 6387379 U JP6387379 U JP 6387379U JP 6387379 U JP6387379 U JP 6387379U JP S6110381 Y2 JPS6110381 Y2 JP S6110381Y2
- Authority
- JP
- Japan
- Prior art keywords
- charging circuit
- ground
- circuit
- flyback transformer
- charging
- 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
- 238000004804 winding Methods 0.000 claims description 8
- 238000009499 grossing Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Description
【考案の詳細な説明】
本考案は充電回路と非充電回路を持つテレビジ
ヨン受像機のフライバツクトランスの高調波共振
周波数の影響による陰極線管画面上の縦じまを除
去できるものを提供しようとするものである。[Detailed description of the invention] The present invention aims to provide a device that can eliminate vertical stripes on a cathode ray tube screen caused by the harmonic resonance frequency of a flyback transformer of a television receiver having a charging circuit and a non-charging circuit. It is.
従来のテレビジヨン受像機は充電回路（商用交
流電源ラインの一方をアースラインにしている回
路）のみを使用していたが、非充電回路（商用交
流電源ラインの一方をアースラインとせず、別に
独立した大地アースでないアースを設けた回路）
を併用することが行なわれている。この非充電回
路の電源をフライバツクトランスから供給する場
合、フライバツクトランスにおける共振周波数が
非充電回路のアースの電位を変動させることにな
る。この結果陰極線管画面に数本〜十数本の縦じ
まが発生することになる。 Conventional television receivers used only a charging circuit (a circuit in which one side of the commercial AC power line is a ground line), but a non-charging circuit (a circuit in which one side of the commercial AC power line is not a ground line and is separate and independent) (a circuit with a ground other than the earth ground)
It is being used in combination. When power is supplied to this non-charging circuit from a flyback transformer, the resonant frequency in the flyback transformer causes the ground potential of the non-charging circuit to fluctuate. As a result, several to ten or more vertical stripes appear on the cathode ray tube screen.
本考案はこの縦じまを除去しようとするもので
あり、以下本考案の一実施例について図面を参照
して説明する。 The present invention aims to eliminate these vertical stripes, and one embodiment of the present invention will be described below with reference to the drawings.
図において１はフライバツクトランスであり、
１次巻線１ａの一端に水平出力トランジスタ２の
コレクタが接続され、他端に平滑コンデンサ３が
接続されている。６は商用交流電源プラグであ
り、５はラインフイルタ、４は電流回路である。
７は充電回路のアースラインを示すものである。
フライバツクトランスに設けられた巻線１ｂは非
充電回路用巻線であり、ここに得られたパルスを
整流平滑して非充電回路を駆動する。回路８はこ
の整流平滑回路および非充電回路を含む非充電回
路分、１ｃは充電回路用の巻線である。９はビデ
オトランス、１０はその後の処理回路である。１
１が非充電回路部分８のアースである。 In the figure, 1 is a flyback transformer,
A collector of a horizontal output transistor 2 is connected to one end of the primary winding 1a, and a smoothing capacitor 3 is connected to the other end. 6 is a commercial AC power plug, 5 is a line filter, and 4 is a current circuit.
7 indicates the ground line of the charging circuit.
The winding 1b provided in the flyback transformer is a winding for a non-charging circuit, and the pulses obtained here are rectified and smoothed to drive the non-charging circuit. The circuit 8 is a non-charging circuit including the rectifying and smoothing circuit and the non-charging circuit, and 1c is a winding for the charging circuit. 9 is a video transformer, and 10 is a subsequent processing circuit. 1
1 is the ground of the non-charging circuit portion 8.
フライバツクトランスの非充電巻線１ｂと充電
巻線１ａ，１ｃとの間の分布容量によてフライバ
ツクトランスの高次共振信号が充電回路と非充電
回路間に発生する。 A high-order resonance signal of the flyback transformer is generated between the charging circuit and the non-charging circuit due to the distributed capacitance between the non-charging winding 1b and the charging windings 1a and 1c of the flyback transformer.
この信号がビデオ回路を通して陰極線管画面上
に縦じま信号をつくることになる。 This signal passes through the video circuit and creates a vertical stripe signal on the cathode ray tube screen.
本考案の特徴とするところはこのアース１１と
上記充電回路のアース７との間を上記フライバツ
クトランス１によつてアース１１にのつた共振信
号の周波数に共振するように定められたコイル１
２とコンデンサ１３よりなる直列共振回路を接続
したことにある。共振信号がもう一つある場合に
はその信号の周波数に共振したコイル１４とコン
デンサ１５よりなる直列共振回路とを設ければよ
い。このようにアース１１にのつた共振信号のみ
アース１１の方に逃がしてやればこの共振信号に
よつて陰極線管画面に生じるタテじまを大幅に軽
減できる。 The feature of the present invention is that a coil 1 is connected between this ground 11 and the ground 7 of the charging circuit so as to resonate at the frequency of the resonant signal transmitted to the ground 11 by the flyback transformer 1.
The reason is that a series resonant circuit consisting of 2 and a capacitor 13 is connected. If there is one more resonant signal, a series resonant circuit consisting of a coil 14 and a capacitor 15 that resonates at the frequency of that signal may be provided. If only the resonant signal transmitted to the ground 11 is allowed to escape to the earth 11 in this manner, vertical stripes caused on the cathode ray tube screen by this resonant signal can be significantly reduced.
共振信号が一種類であつても二つ直列共振回路
を設けることによりコンデンサとコイルのばらつ
きを吸収でき、また、共振点におけるインピーダ
ンスをさらに下げることができる。 Even if there is only one type of resonance signal, by providing two series resonance circuits, variations in the capacitor and coil can be absorbed, and the impedance at the resonance point can be further lowered.
また、直列共振回路と並列にコンデンサを接続
すれば高周波に起因する非充電回路の電圧変動を
吸収することができる。 Furthermore, by connecting a capacitor in parallel with the series resonant circuit, voltage fluctuations in the non-charging circuit caused by high frequencies can be absorbed.
以上のように本考案によれば充電回路と非充電
回路を併用し、非充電回路の電源電圧をフライバ
ツクトランスのパルスを整流平滑した場合でも、
陰極線管の縦じまを有効に除去することができる
ものである。 As described above, according to the present invention, even when a charging circuit and a non-charging circuit are used together, and the power supply voltage of the non-charging circuit is rectified and smoothed from the pulses of the flyback transformer,
The vertical stripes of a cathode ray tube can be effectively removed.
図は本考案の一実施例におけるテレビジヨン受
像機の回路図である。
１……フライバツクトランス、１ｂ……非充電
回路用巻線、１１……非充電回路アース、７……
充電回路アース、１２，１４……コイル、１３，
１５……コンデンサ。
The figure is a circuit diagram of a television receiver according to an embodiment of the present invention. 1...Flyback transformer, 1b...Winding for non-charging circuit, 11...Non-charging circuit ground, 7...
Charging circuit ground, 12, 14... Coil, 13,
15... Capacitor.
Claims (1)
パルスを整流平滑して得た直流電圧を電源電圧と
する非充電回路を設け、この非充電回路のアース
と充電回路のアースとの間に、上記充電回路と非
充電回路のアース間にのる上記フライバツクトラ
ンスからの共振信号の周波数に共振した直列共振
回路を接続したテレビジヨン受像機。 A non-charging circuit whose power supply voltage is a DC voltage obtained by rectifying and smoothing the pulses obtained in the winding of the flyback transformer is provided, and the above-mentioned voltage is connected between the ground of this non-charging circuit and the ground of the charging circuit. A television receiver connected to a series resonant circuit that resonates at the frequency of the resonant signal from the above-mentioned flyback transformer, which is connected between the charging circuit and the ground of the non-charging circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6387379U JPS6110381Y2 (en) | 1979-05-14 | 1979-05-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6387379U JPS6110381Y2 (en) | 1979-05-14 | 1979-05-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55165541U JPS55165541U (en) | 1980-11-28 |
| JPS6110381Y2 true JPS6110381Y2 (en) | 1986-04-03 |
Family
ID=29297918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6387379U Expired JPS6110381Y2 (en) | 1979-05-14 | 1979-05-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6110381Y2 (en) |
-
1979
- 1979-05-14 JP JP6387379U patent/JPS6110381Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55165541U (en) | 1980-11-28 |
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