JPS645565U - - Google Patents
Info
- Publication number
- JPS645565U JPS645565U JP9942187U JP9942187U JPS645565U JP S645565 U JPS645565 U JP S645565U JP 9942187 U JP9942187 U JP 9942187U JP 9942187 U JP9942187 U JP 9942187U JP S645565 U JPS645565 U JP S645565U
- Authority
- JP
- Japan
- Prior art keywords
- width
- horizontal
- screen
- operational amplifier
- crt monitor
- 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
- 238000004804 winding Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図はこの考案の一実施例によるＣＲＴモニ
タ水平画面巾一定回路の回路図、第２図は従来の
ＣＲＴモニタ水平画面巾一定回路の回路図である
。
１１は演算増幅器、１６は水平巾調整用トラン
ス、１６ａは巾調整用巻線、１６ｂは１次巻線。
FIG. 1 is a circuit diagram of a CRT monitor horizontal screen width constant circuit according to an embodiment of this invention, and FIG. 2 is a circuit diagram of a conventional CRT monitor horizontal screen width constant circuit. 11 is an operational amplifier, 16 is a horizontal width adjustment transformer, 16a is a width adjustment winding, and 16b is a primary winding.
Claims (1)
線に水平巾調整用電流が供給される水平巾調整用
トランスと、画面の明暗に応じて変動する個所の
電位を検出してこの検出出力に応じて上記巾調整
用巻線に制御電流を供することにより上記１次巻
線のインダクタンスを変化させる演算増幅器とを
備えたＣＲＴモニタ水平画面巾一定回路。 (2) 演算増幅器は画面の明暗に応じて変動する
オート・ビーム・リミツタ回路の電位を検出する
ことを特徴とする実用新案登録請求の範囲第１項
記載のＣＲＴモニタ水平画面巾一定回路。 (3) 演算増幅器はビデオ回路の電源電圧の変動
を検出することを特徴とする実用新案登録請求の
範囲第１項記載のＣＲＴモニタ水平画面巾一定回
路。[Scope of Claim for Utility Model Registration] (1) A horizontal width adjustment transformer in which a horizontal deflection current flows through the primary winding and a horizontal width adjustment current is supplied to the width adjustment winding, and the horizontal width adjustment transformer changes depending on the brightness and darkness of the screen. a CRT monitor horizontal screen width constant circuit, comprising: an operational amplifier that changes the inductance of the primary winding by detecting the potential at a location where the width is adjusted and supplying a control current to the width adjusting winding according to the detected output; . (2) The CRT monitor horizontal screen width constant circuit according to claim 1, wherein the operational amplifier detects the potential of the auto beam limiter circuit which changes depending on the brightness of the screen. (3) The CRT monitor horizontal screen width constant circuit according to claim 1, wherein the operational amplifier detects fluctuations in the power supply voltage of the video circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9942187U JPS645565U (en) | 1987-06-30 | 1987-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9942187U JPS645565U (en) | 1987-06-30 | 1987-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS645565U true JPS645565U (en) | 1989-01-12 |
Family
ID=31326564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9942187U Pending JPS645565U (en) | 1987-06-30 | 1987-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS645565U (en) |
-
1987
- 1987-06-30 JP JP9942187U patent/JPS645565U/ja active Pending
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