JPH02128466U - - Google Patents
Info
- Publication number
- JPH02128466U JPH02128466U JP3711489U JP3711489U JPH02128466U JP H02128466 U JPH02128466 U JP H02128466U JP 3711489 U JP3711489 U JP 3711489U JP 3711489 U JP3711489 U JP 3711489U JP H02128466 U JPH02128466 U JP H02128466U
- Authority
- JP
- Japan
- Prior art keywords
- correcting
- circuit
- focus
- correction circuit
- current
- 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 5
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Details Of Television Scanning (AREA)
Description
第１図はこの考案の一実施例によるダイナミツ
クフオーカス補正回路の回路図、第２図は第１図
の出力回路の電流の変化を示す説明図、第３図は
従来の出力回路の電流の変化を示す説明図、第４
図は従来のダイナミツクフオーカス補正回路の回
路図である。
図において、１……発生回路、３……差動アン
プ、４，５……出力回路、６……ダイナミツクフ
オーカスコイル、８，１１……可変抵抗器、９…
…増幅回路、１０……スタテイツクフオーカスコ
イルを示す。なお、図中、同一符号は同一、また
は相当部分を示す。
Fig. 1 is a circuit diagram of a dynamic focus correction circuit according to an embodiment of this invention, Fig. 2 is an explanatory diagram showing changes in current in the output circuit of Fig. 1, and Fig. 3 is a current diagram of a conventional output circuit. Explanatory diagram showing changes in 4th
The figure is a circuit diagram of a conventional dynamic focus correction circuit. In the figure, 1... Generator circuit, 3... Differential amplifier, 4, 5... Output circuit, 6... Dynamic focus coil, 8, 11... Variable resistor, 9...
. . . amplifier circuit, 10 . . . static focus coil. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
オーカスを補正するダイナミツクフオーカス補正
回路において、フオーカスを直流電流で補正する
回路と水平走査周期で補正する回路の２つを有し
、前記水平走査周期で補正する回路の直流電流で
補正する回路への影響を無くするためにＤＣクラ
ンプ回路を除去したことを特徴とするダイナミツ
クフオーカス補正回路。 A dynamic focus correction circuit for correcting the focus on the CRT screen of a projection television receiver has two circuits, one for correcting the focus using a direct current and the other for correcting the focus using a horizontal scanning period. A dynamic focus correction circuit characterized in that a DC clamp circuit is removed in order to eliminate the influence of a circuit correcting by period on a circuit correcting by DC current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3711489U JPH02128466U (en) | 1989-03-29 | 1989-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3711489U JPH02128466U (en) | 1989-03-29 | 1989-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02128466U true JPH02128466U (en) | 1990-10-23 |
Family
ID=31543932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3711489U Pending JPH02128466U (en) | 1989-03-29 | 1989-03-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02128466U (en) |
-
1989
- 1989-03-29 JP JP3711489U patent/JPH02128466U/ja active Pending
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