JPH031759A - Cathode ray tube - Google Patents
Cathode ray tubeInfo
- Publication number
- JPH031759A JPH031759A JP13722989A JP13722989A JPH031759A JP H031759 A JPH031759 A JP H031759A JP 13722989 A JP13722989 A JP 13722989A JP 13722989 A JP13722989 A JP 13722989A JP H031759 A JPH031759 A JP H031759A
- Authority
- JP
- Japan
- Prior art keywords
- deflection yoke
- auxiliary
- auxiliary deflection
- coil
- main
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000013016 damping Methods 0.000 abstract description 3
- 230000004907 flux Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 230000003071 parasitic effect Effects 0.000 abstract description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、いわゆるインデックス管やプロジェクタ−等
に使用される陰極線管に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cathode ray tube used in so-called index tubes, projectors, and the like.
本発明は陰極線管に関し、主偏向ヨークの他に補助偏向
ヨークが設けられている場合に、この補助偏向ヨークに
直列にコイルを接続することによって補助偏向ヨークに
流れる電流を減少させ、主偏向ヨークへの影響を軽減し
て偏向のりニアリティ等を向上させるようにしたもので
ある。The present invention relates to a cathode ray tube, and when an auxiliary deflection yoke is provided in addition to the main deflection yoke, by connecting a coil in series to the auxiliary deflection yoke, the current flowing through the auxiliary deflection yoke is reduced, and the main deflection yoke is This is designed to improve deflection linearity, etc. by reducing the influence on
〔従来の技術］
いわゆるインデックス管やプロジェクタ−に使用される
陰極線管において、主偏向ヨークの他に補助偏向ヨーク
を設けて偏向のりニアリティ等の補正を行なうことが提
案されている（特開昭５４−３５６１５号公報、特開昭
６０−１１１５８８号公報参照）。[Prior Art] In cathode ray tubes used in so-called index tubes and projectors, it has been proposed to provide an auxiliary deflection yoke in addition to the main deflection yoke to correct deflection linearity, etc. (See Japanese Patent Laid-Open No. 60-111588).
ところが上述のような装置において、主偏向ヨークと補
助偏向ヨークとの距離は構造上余り大きくすることがで
きない。このため主偏向ヨークと補助偏向ヨークとの間
で電磁結合が生じることが避られす、主偏向ヨークの磁
束の変化によって補助偏向ヨークに電圧が発生してしま
う。However, in the above-described device, the distance between the main deflection yoke and the auxiliary deflection yoke cannot be made very large due to the structure. This prevents electromagnetic coupling between the main deflection yoke and the auxiliary deflection yoke, which would generate a voltage in the auxiliary deflection yoke due to changes in the magnetic flux of the main deflection yoke.
一方補助偏向ヨークの駆動系は例えば第２図に示すよう
に構成されている。ここで一般に駆動回路（２１）とな
るアンプは低インピーダンス出力にて駆動されるため、
補助偏向ヨーク（２２）のコイルに発生した電圧によっ
て、駆動回路（２１）及び偏向ヨーク（２２）に電流が
流れてしまう。On the other hand, the drive system for the auxiliary deflection yoke is constructed as shown in FIG. 2, for example. Here, since the amplifier serving as the drive circuit (21) is generally driven with a low impedance output,
The voltage generated in the coil of the auxiliary deflection yoke (22) causes current to flow through the drive circuit (21) and the deflection yoke (22).
そしてこのような電流が流れると、主偏向ヨーク（図示
せず）側から見て一種のショートリングのような動作き
なり、主偏向ヨークの負荷が増大すると共に、特に主偏
向ヨークのＱが低下されることによって偏向波形のピー
ク部が錬り、例えば水平偏向の場合に画面の左右端部の
りニアリティが著しく劣化されてしまうことになる。When such a current flows, the main deflection yoke (not shown) behaves like a short ring when viewed from the side, increasing the load on the main deflection yoke and, in particular, decreasing the Q of the main deflection yoke. As a result, the peak portion of the deflection waveform becomes distorted, and, for example, in the case of horizontal deflection, the linearity of the left and right edges of the screen is significantly deteriorated.
このような水平リニアリティの劣化は特にインデックス
管に使用した場合に画面の左右端部に設けられるランイ
ン部の動作を不安定にし、良好なインデックス動作の障
害となるものである。Such deterioration in horizontal linearity makes the operation of the run-in sections provided at the left and right ends of the screen unstable, especially when used as an index tube, and becomes an obstacle to good index operation.
なお従来のインデックス管では、いわゆるオーバースキ
ャンを広くして、リニアリティの良好な部分のみでイン
デックス動作が行われるようにしているが、例えばコン
ピュータのデイスプレィモニタに使用する場合にはオー
バースキャンを極力小さくするつことが求められ、左右
端部のリニアリティの劣化が大きな課題となっていた。In conventional index tubes, the so-called overscan is widened so that the index operation is performed only in areas with good linearity, but for example, when used in a computer display monitor, the overscan must be minimized. This required smoothness, and deterioration of linearity at the left and right edges became a major issue.
この出願はこのような点に鑑みなされたもので、簡単な
構成で主偏向ヨークに対する補助偏向ヨークの影害を軽
減できるようにしたものである。This application was made in view of these points, and is intended to reduce the influence of the auxiliary deflection yoke on the main deflection yoke with a simple configuration.
〔課題を解決するための手段］
本発明は、主偏向ヨークと補助偏向ヨーク（２）の設け
られる陰極線管において、上記補助偏向ヨークに直列に
コイル（３）を接続し、上記主偏向ヨークと補助偏向ヨ
ークの電磁結合によって上記補助偏向ヨークに発生する
電流を減少させるようにしたことを特徴とする陰極線管
である。[Means for Solving the Problems] The present invention provides a cathode ray tube provided with a main deflection yoke and an auxiliary deflection yoke (2), in which a coil (3) is connected in series to the auxiliary deflection yoke, and a coil (3) is connected in series with the main deflection yoke. This cathode ray tube is characterized in that the current generated in the auxiliary deflection yoke is reduced by electromagnetic coupling of the auxiliary deflection yoke.
これによれば、コイルを直列に設けることによって補助
偏向ヨークに流れる電流が減少され、主偏向ヨークへの
影響を軽減させることができる。According to this, by providing the coils in series, the current flowing through the auxiliary deflection yoke can be reduced, and the influence on the main deflection yoke can be reduced.
［実施例〕
第１図において、駆動回路（１）となるアンプと補助偏
向ヨーク（２）のコイルとの間に、補助偏向ヨーり（２
）に直列にコイル（３）が設けられる。また（４）は寄
生容量等によって補助偏向ヨーク（２）のコイルの両端
電圧が振動しないようにするためのダンピング抵抗であ
って、これは破線図示のように補助偏向ヨーク（２）の
両端間に設けてもよい。なお他の陰極線管の構成は上記
の文献等で従来周知のものと同等であるので省略する。[Example] In Fig. 1, the auxiliary deflection yaw (2) is connected between the amplifier serving as the drive circuit (1) and the coil of the auxiliary deflection yoke (2).
) is provided with a coil (3) in series. Also, (4) is a damping resistor to prevent the voltage across the coil of the auxiliary deflection yoke (2) from oscillating due to parasitic capacitance, etc., and this is a damping resistor that is connected between both ends of the auxiliary deflection yoke (2) as shown by the broken line. may be provided. Note that the other configurations of the cathode ray tube are the same as those conventionally known in the above-mentioned literature, and will therefore be omitted.
従ってこの装置において、主偏向ヨーク（図示せず）の
磁束の変化によって補助偏向ヨーク（２）に電圧が発生
しても、この電圧による電流は例えば補助偏向ヨーク（
２）のコイルとコイル（３）のりアクタンス値を等しく
した場合でコイル（３）が無い場合のられる影響も略−
に軽減される。Therefore, in this device, even if a voltage is generated in the auxiliary deflection yoke (2) due to a change in the magnetic flux of the main deflection yoke (not shown), the current due to this voltage will be transferred to the auxiliary deflection yoke (2), for example.
When the actance values of coil 2) and coil (3) are made equal, the effect of the absence of coil (3) is approximately -
will be reduced to
こうして上述の構成によれば、コイルを直列に設けるこ
とによって補助偏向ヨークに流れる電流が減少され、主
偏向ヨークへの影響を軽減させることができるものであ
る。Thus, according to the above-described configuration, by providing the coils in series, the current flowing through the auxiliary deflection yoke is reduced, and the influence on the main deflection yoke can be reduced.
また上述の構成によれば、直列にコイルを設けるだめに
、駆動電圧対補助偏向ヨークに；Ａれる電流の位相関係
もくずれることがなく、本来の動作は良好に行われるも
のである。Further, according to the above-mentioned structure, since the coils are provided in series, the phase relationship between the driving voltage and the current flowing to the auxiliary deflection yoke does not change, and the original operation can be performed satisfactorily.
〔発明の効果］
この発明によれば、コイルを直列に設けることによって
補助偏向ヨークに流れる電流が減少され、主偏向ヨーク
への影響を軽減させることができるようになった。[Effects of the Invention] According to the present invention, by providing the coils in series, the current flowing through the auxiliary deflection yoke is reduced, and the influence on the main deflection yoke can be reduced.
第１図は本発明の一例の構成図、第２図は従来の技術の
説明のための図である。
（１）は駆動回路、（２）は補助偏向ヨーク、（３）は
コイル、（４）は抵抗器である。FIG. 1 is a block diagram of an example of the present invention, and FIG. 2 is a diagram for explaining a conventional technique. (1) is a drive circuit, (2) is an auxiliary deflection yoke, (3) is a coil, and (4) is a resistor.
Claims (1)
おいて、 上記補助偏向ヨークに直列にコイルを接続し、上記主偏
向ヨークと補助偏向ヨークの電磁結合によって上記補助
偏向ヨークに発生する電流を減少させるようにしたこと
を特徴とする陰極線管。[Claims] In a cathode ray tube provided with a main deflection yoke and an auxiliary deflection yoke, a coil is connected in series to the auxiliary deflection yoke, and a coil is generated in the auxiliary deflection yoke by electromagnetic coupling between the main deflection yoke and the auxiliary deflection yoke. A cathode ray tube characterized in that the current flowing through the cathode ray tube is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13722989A JPH031759A (en) | 1989-05-30 | 1989-05-30 | Cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13722989A JPH031759A (en) | 1989-05-30 | 1989-05-30 | Cathode ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031759A true JPH031759A (en) | 1991-01-08 |
Family
ID=15193799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13722989A Pending JPH031759A (en) | 1989-05-30 | 1989-05-30 | Cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031759A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4220732A1 (en) * | 1991-06-26 | 1993-01-14 | Hitachi Ltd | SEMICONDUCTOR COOLING DEVICE |
-
1989
- 1989-05-30 JP JP13722989A patent/JPH031759A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4220732A1 (en) * | 1991-06-26 | 1993-01-14 | Hitachi Ltd | SEMICONDUCTOR COOLING DEVICE |
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