JPH0390176U - - Google Patents
Info
- Publication number
- JPH0390176U JPH0390176U JP15092989U JP15092989U JPH0390176U JP H0390176 U JPH0390176 U JP H0390176U JP 15092989 U JP15092989 U JP 15092989U JP 15092989 U JP15092989 U JP 15092989U JP H0390176 U JPH0390176 U JP H0390176U
- Authority
- JP
- Japan
- Prior art keywords
- ray tube
- cathode ray
- circuit
- color
- color signal
- 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
- Picture Signal Circuits (AREA)
Description
第１図は本考案になる陰極線管のドライブ回路
の一実施例を示す回路図、第２図は従来回路の一
例を示す回路図である。
１……励振トランス、１ａ，７ａ……１次巻線
、１ｂ，７ｂ……２次巻線、７ｃ……３次巻線、
２……水平出力ＮＰＮトランジスタ、３……ダン
パーダイオード、４……帰線共振コンデンサ、５
……水平偏向コイル、６……Ｓ字補正コンデンサ
、７……フライバツクトランス、８……高圧整流
ダイオード、１０……整流ダイオード、１１……
平滑コンデンサ、１２……アノード端子、１３…
…電源端子、１４……色信号出力回路、１５……
陰極線管（ＣＲＴ）、１５ａ……陽極（アノード
）、１５ｂ……陰極（カソード）、１６，２０，
３２，３４，３５……抵抗、１７……カスコード
ＮＰＮトランジスタ、１８……色信号出力ＮＰＮ
トランジスタ、１９……色差信号入力端子、２１
……輝度信号端子、３１……スイツチ回路、３３
……スイツチ用ＰＮＰトランジスタ、３６……電
源オン／オフ信号入力端子、Ｅｂ，Ｅ……直流電
源電圧。
FIG. 1 is a circuit diagram showing an embodiment of a cathode ray tube drive circuit according to the present invention, and FIG. 2 is a circuit diagram showing an example of a conventional circuit. 1... Excitation transformer, 1a, 7a... Primary winding, 1b, 7b... Secondary winding, 7c... Tertiary winding,
2... Horizontal output NPN transistor, 3... Damper diode, 4... Return line resonant capacitor, 5
... Horizontal deflection coil, 6 ... S-shaped correction capacitor, 7 ... Flyback transformer, 8 ... High voltage rectifier diode, 10 ... Rectifier diode, 11 ...
Smoothing capacitor, 12... Anode terminal, 13...
...Power terminal, 14...Color signal output circuit, 15...
Cathode ray tube (CRT), 15a... anode, 15b... cathode, 16, 20,
32, 34, 35...Resistor, 17...Cascode NPN transistor, 18...Color signal output NPN
Transistor, 19...Color difference signal input terminal, 21
...Brightness signal terminal, 31 ...Switch circuit, 33
...PNP transistor for switch, 36...Power on/off signal input terminal, Eb, E...DC power supply voltage.
Claims (1)
そこから得られる直流高圧を陰極線管にアノード
電圧として供給するフライバツクトランスと、 このフライバツクトランスから得られる別の出
力電圧が回路の動作電源電圧として供給され、か
つ、色復調された色差信号を増幅して前記陰極線
管のカソード又は第１グリツドに供給する色信号
出力回路と を備えた陰極線管のドライブ回路において、 電源オフ時、前記色信号出力回路の動作電源電
圧入力端子が接地に接続されるよう切換えられる
スイツチ回路を付加してなることを特徴とする陰
極線管のドライブ回路。[Claims for Utility Model Registration] Boosting the pulse generated in the horizontal transistor,
A flyback transformer supplies the high DC voltage obtained from this to the cathode ray tube as an anode voltage, and another output voltage obtained from this flyback transformer is supplied as the operating power supply voltage of the circuit, and also outputs the color demodulated color difference signal. In a cathode ray tube drive circuit comprising a color signal output circuit that amplifies and supplies the amplified color signal to the cathode of the cathode ray tube or the first grid, an operating power supply voltage input terminal of the color signal output circuit is connected to ground when the power is turned off. A drive circuit for a cathode ray tube, characterized in that it includes an additional switch circuit that can be switched such that the
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15092989U JPH0390176U (en) | 1989-12-26 | 1989-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15092989U JPH0390176U (en) | 1989-12-26 | 1989-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0390176U true JPH0390176U (en) | 1991-09-13 |
Family
ID=31697260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15092989U Pending JPH0390176U (en) | 1989-12-26 | 1989-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0390176U (en) |
-
1989
- 1989-12-26 JP JP15092989U patent/JPH0390176U/ja active Pending
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