JPS60139375U - CRT focus circuit - Google Patents
CRT focus circuitInfo
- Publication number
- JPS60139375U JPS60139375U JP2463084U JP2463084U JPS60139375U JP S60139375 U JPS60139375 U JP S60139375U JP 2463084 U JP2463084 U JP 2463084U JP 2463084 U JP2463084 U JP 2463084U JP S60139375 U JPS60139375 U JP S60139375U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- focus circuit
- crt focus
- crt
- capacitor
- 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
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案によるブラウン管フォーカス回路の一実
施例を示す回路図である。第２図は、第１図番部電圧波
形を示す波形図である。
１・・・垂直ＤＹ、２・・・直流カット用コンデンサ、
４・・・抵抗、５・・・コンデンサ、６・・・抵抗、７
・・・抵抗、８・・・トランジスタ、９・・・抵抗、１
０・・・抵抗、１１・・・トランジスタ、１２・・・抵
抗、１３・・・ダンピング用ダイオード、１４・・・昇
圧トランス、１５・・・抵抗、１６・・・スイッチング
トランジスタ、１７・・・−−ダイす−ド、１８・・・
コンデンサ、１９・・・放電抵抗、２１・・・コンデン
サ、−２２・・・ブラウン管、２３．２４・・・垂直出
力トランジスタ。FIG. 1 is a circuit diagram showing an embodiment of a cathode ray tube focusing circuit according to the present invention. FIG. 2 is a waveform diagram showing the voltage waveform of the first part. 1... Vertical DY, 2... DC cut capacitor,
4...Resistor, 5...Capacitor, 6...Resistor, 7
...Resistance, 8...Transistor, 9...Resistance, 1
0... Resistor, 11... Transistor, 12... Resistor, 13... Damping diode, 14... Step-up transformer, 15... Resistor, 16... Switching transistor, 17... --Daisdo, 18...
Capacitor, 19... Discharge resistor, 21... Capacitor, -22... Braun tube, 23.24... Vertical output transistor.
Claims (1)
の電圧を昇圧トランスで昇圧した後、垂直周期より短い
時定数で整流し、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したこ−とを特徴とするブラウン管
フォーカス回路。It is characterized by amplitude modulating the vertically synchronized parabolic voltage with a horizontal frequency, boosting this voltage with a step-up transformer, rectifying it with a time constant shorter than the vertical period, and superimposing the obtained voltage on the focus voltage through a capacitor. CRT focusing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2463084U JPS60139375U (en) | 1984-02-24 | 1984-02-24 | CRT focus circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2463084U JPS60139375U (en) | 1984-02-24 | 1984-02-24 | CRT focus circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60139375U true JPS60139375U (en) | 1985-09-14 |
Family
ID=30518958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2463084U Pending JPS60139375U (en) | 1984-02-24 | 1984-02-24 | CRT focus circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60139375U (en) |
-
1984
- 1984-02-24 JP JP2463084U patent/JPS60139375U/en active Pending
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