JPH0298571U - - Google Patents
Info
- Publication number
- JPH0298571U JPH0298571U JP541189U JP541189U JPH0298571U JP H0298571 U JPH0298571 U JP H0298571U JP 541189 U JP541189 U JP 541189U JP 541189 U JP541189 U JP 541189U JP H0298571 U JPH0298571 U JP H0298571U
- Authority
- JP
- Japan
- Prior art keywords
- crt
- electrode
- focus
- drive circuit
- supplies
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Details Of Television Scanning (AREA)
- Picture Signal Circuits (AREA)
Description
第１図は本考案のＣＲＴドライブ回路の一実施
例を示したブロツク図、第２図は第１図に示した
フオーカス端子と電極付近の詳細斜視図、第３図
は従来のＣＲＴドライブ回路の一例を示したブロ
ツク図である。
１……ＣＲＴ、２……フライバツクトランス、
４，５……分圧抵抗、８Ｒ，８Ｇ，８Ｂ……増幅
回路、１０……フオーカス端子、１４……電極、
１５……ＣＲＴソケツト、１７……プリント基板
。
Fig. 1 is a block diagram showing one embodiment of the CRT drive circuit of the present invention, Fig. 2 is a detailed perspective view of the focus terminal and electrode vicinity shown in Fig. 1, and Fig. 3 is a diagram of a conventional CRT drive circuit. FIG. 2 is a block diagram showing an example. 1...CRT, 2...Flyback transformer,
4, 5... Voltage dividing resistor, 8R, 8G, 8B... Amplifying circuit, 10... Focus terminal, 14... Electrode,
15...CRT socket, 17...Printed circuit board.
Claims (1)
フオーカス電圧を作成してこれをＣＲＴのフオー
カス電極に供給すると共に、同ＣＲＴのカソード
電極に映像信号を供給するＣＲＴドライブ回路に
おいて、前記フオーカス電圧を供給するためのフ
オーカス端子に対向して近接配置した電極と、こ
の電極を介して前記フオーカス電圧に重畳された
ノイズ成分を取出し、かつ位相を反転させて前記
カソード電極に印加する位相反転手段とを具備し
たことを特徴とするＣＲＴドライブ回路。 In a CRT drive circuit that creates a focus voltage from a high voltage obtained from a flyback transformer and supplies it to a focus electrode of a CRT, and also supplies a video signal to a cathode electrode of the CRT, a The method includes an electrode disposed close to the focus terminal, and a phase inverting means for extracting a noise component superimposed on the focus voltage through the electrode, inverting the phase thereof, and applying the same to the cathode electrode. Characteristic CRT drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP541189U JPH0298571U (en) | 1989-01-23 | 1989-01-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP541189U JPH0298571U (en) | 1989-01-23 | 1989-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0298571U true JPH0298571U (en) | 1990-08-06 |
Family
ID=31208765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP541189U Pending JPH0298571U (en) | 1989-01-23 | 1989-01-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0298571U (en) |
-
1989
- 1989-01-23 JP JP541189U patent/JPH0298571U/ja active Pending
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