JPH0353077U - - Google Patents
Info
- Publication number
- JPH0353077U JPH0353077U JP11347689U JP11347689U JPH0353077U JP H0353077 U JPH0353077 U JP H0353077U JP 11347689 U JP11347689 U JP 11347689U JP 11347689 U JP11347689 U JP 11347689U JP H0353077 U JPH0353077 U JP H0353077U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- horizontal
- voltage
- focus
- dynamic focus
- 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
- 230000010355 oscillation Effects 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は本考案の一実施例のダイナミツクフオ
ーカス回路を示すブロツク図、第２図は水平ダイ
ナミツクフオーカス調整を行う場合のパラボラ電
圧の位相の変化状態を示す説明図、第３図は従来
のダイナミツクフオーカス回路を示すブロツク図
である。
１……水平発振回路、２……水平増幅回路、３
……水平出力回路、４……水平偏向ヨーク、６…
…積分回路、７……フオーカストランス、８……
直流フオーカス電圧発生回路、９……ＣＲＴフオ
ーカス電極、１０……位相シフト回路、１１……
高圧増幅回路、１２…高圧出力回路、１３……フ
ライバツクトランス。
Fig. 1 is a block diagram showing a dynamic focus circuit according to an embodiment of the present invention, Fig. 2 is an explanatory diagram showing how the phase of parabolic voltage changes when horizontal dynamic focus adjustment is performed, and Fig. 3 1 is a block diagram showing a conventional dynamic focus circuit. 1...Horizontal oscillation circuit, 2...Horizontal amplifier circuit, 3
...Horizontal output circuit, 4...Horizontal deflection yoke, 6...
...Integrator circuit, 7...Focus transformer, 8...
DC focus voltage generation circuit, 9... CRT focus electrode, 10... Phase shift circuit, 11...
High voltage amplifier circuit, 12...high voltage output circuit, 13...flyback transformer.
Claims (1)
得られるパルス電圧を積分し、パラボラ電圧を発
生させ、該電圧を直流フオーカス電圧に重畳して
水平ダイナミツクフオーカス電圧を得、これを陰
極線管のフオーカス電極に供給するダイナミツク
フオーカス回路において、 前記高圧発生回路を、前記水平発振回路の出力
から水平偏向コイルへ電流を供給する水平偏向回
路と分離させた構成とし、その分離した高圧発生
回路に前記水平ダイナミツクフオーカス電圧の位
相を可変する位相シフト回路を設けたことを特徴
とするダイナミツクフオーカス回路。[Claims for Utility Model Registration] A parabolic voltage is generated by integrating the pulse voltage obtained from the output of a horizontal oscillation circuit through a high voltage generation circuit, and this voltage is superimposed on a DC focus voltage to obtain a horizontal dynamic focus voltage. , in a dynamic focus circuit that supplies this to a focus electrode of a cathode ray tube, the high voltage generation circuit is separated from a horizontal deflection circuit that supplies current from the output of the horizontal oscillation circuit to the horizontal deflection coil; A dynamic focus circuit characterized in that a separate high voltage generation circuit is provided with a phase shift circuit for varying the phase of the horizontal dynamic focus voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11347689U JPH0353077U (en) | 1989-09-29 | 1989-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11347689U JPH0353077U (en) | 1989-09-29 | 1989-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0353077U true JPH0353077U (en) | 1991-05-22 |
Family
ID=31661890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11347689U Pending JPH0353077U (en) | 1989-09-29 | 1989-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0353077U (en) |
-
1989
- 1989-09-29 JP JP11347689U patent/JPH0353077U/ja active Pending
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