JPS60169981U - CRT focus circuit - Google Patents
CRT focus circuitInfo
- Publication number
- JPS60169981U JPS60169981U JP5584784U JP5584784U JPS60169981U JP S60169981 U JPS60169981 U JP S60169981U JP 5584784 U JP5584784 U JP 5584784U JP 5584784 U JP5584784 U JP 5584784U JP S60169981 U JPS60169981 U JP S60169981U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacitor
- circuit
- focus circuit
- resonant
- 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
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Details Of Television Scanning (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の垂直方向ダイナミックフォーカス回路を
示す回路図、第２図は第１区名部電圧波形図、第３図は
本考案のよる垂直方向ダイナミックフォーカス回路の一
実施例を示す回路図、第４図は、第３区名部電圧波形を
示す波形図である。
１・・・トランジスタ、２・・・抵抗、３・・・昇圧ト
ランス、４・・・共振用コンデンサ、５・・・ダイオー
ド、６・・・ベース抵抗、７・・・スイッチングトラン
ジスタ、８．１０・・・ダイオード、９．１１・・・整
流コンデンサ、１２・・・放電抵抗、１３・・・重畳コ
ンデンサ、１４・・・ブラウン管。FIG. 1 is a circuit diagram showing a conventional vertical dynamic focus circuit, FIG. 2 is a first section voltage waveform diagram, and FIG. 3 is a circuit diagram showing an embodiment of a vertical dynamic focus circuit according to the present invention. , FIG. 4 is a waveform diagram showing the voltage waveform of the third section. DESCRIPTION OF SYMBOLS 1... Transistor, 2... Resistor, 3... Step-up transformer, 4... Resonant capacitor, 5... Diode, 6... Base resistor, 7... Switching transistor, 8.10 ...Diode, 9.11... Rectifier capacitor, 12... Discharge resistor, 13... Superposition capacitor, 14... Braun tube.
Claims (1)
整流して、垂直パラボラ状電圧を得、得られた電圧をコ
ンデンサを通じてフォーカス電圧に重畳する回路構成に
於いて、トランジスタ１次巻線側に１次巻線コイル、コ
ンデンサ、抵抗よりなる水平周波数より高い周波数の共
振回路を設け、この共振電圧の振幅を、垂直パラボラ状
電圧により制御してなることを特徴とするブラウン管フ
ォーカス回路。In a circuit configuration in which the step-up transformer output winding voltage is rectified with a time constant shorter than the vertical period to obtain a vertical parabolic voltage, and the obtained voltage is superimposed on the focus voltage through a capacitor, A cathode ray tube focusing circuit characterized in that a resonant circuit having a frequency higher than a horizontal frequency is provided, which is composed of a primary winding coil, a capacitor, and a resistor, and the amplitude of this resonant voltage is controlled by a vertical parabolic voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5584784U JPS60169981U (en) | 1984-04-18 | 1984-04-18 | CRT focus circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5584784U JPS60169981U (en) | 1984-04-18 | 1984-04-18 | CRT focus circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60169981U true JPS60169981U (en) | 1985-11-11 |
Family
ID=30578902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5584784U Pending JPS60169981U (en) | 1984-04-18 | 1984-04-18 | CRT focus circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60169981U (en) |
-
1984
- 1984-04-18 JP JP5584784U patent/JPS60169981U/en active Pending
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