JPS628762U - - Google Patents
Info
- Publication number
- JPS628762U JPS628762U JP9757185U JP9757185U JPS628762U JP S628762 U JPS628762 U JP S628762U JP 9757185 U JP9757185 U JP 9757185U JP 9757185 U JP9757185 U JP 9757185U JP S628762 U JPS628762 U JP S628762U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- video output
- supplied
- base
- 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
- 230000003321 amplification Effects 0.000 claims 1
- 238000009499 grossing Methods 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図は、本考案にかかる映像出力回路の一実
施例を示す回路図、第２図は、本考案の動作を説
明する入出力特性図、第３図は従来の映像出力回
路の一例を示す回路図、第４図は従来の動作を説
明する入出力特性図である。
１，４，５，２０……トランジスタ、２，７，
１２，１３，１８，１９，２１，２３，２６，２
８，３１，３２……抵抗、８……受像管、１１，
２５，２７……ダイオード、１６，１７……利得
制御増幅器、２２……コンデンサ、３３……定電
圧ダイオード。
FIG. 1 is a circuit diagram showing an embodiment of a video output circuit according to the present invention, FIG. 2 is an input/output characteristic diagram explaining the operation of the present invention, and FIG. 3 is an example of a conventional video output circuit. The circuit diagram shown in FIG. 4 is an input/output characteristic diagram explaining the conventional operation. 1, 4, 5, 20...transistor, 2, 7,
12, 13, 18, 19, 21, 23, 26, 2
8, 31, 32... Resistor, 8... Picture tube, 11,
25, 27... Diode, 16, 17... Gain control amplifier, 22... Capacitor, 33... Constant voltage diode.
Claims (1)
号が供給されるとともに抵抗を介して基準電位点
に接続され、コレクタは抵抗を介して電圧源に接
続された駆動用トランジスタと、 この駆動用トランジスタのコレクタからの出力
信号がそれぞれベースに供給されプツシユプル接
続された第１、第２のトランジスタを含み、増幅
された映像出力を受像管に供給するようにした出
力回路と、 前記第１、第２のトランジスタの主電流路に直
列に接続され、前記映像出力の白ピークレベルが
所定範囲内にあるときはその映像出力の変化に追
従した電圧を発生し、映像出力の白ピークレベル
が所定範囲を越えて増加するときは一定の電圧を
発生する手段と、 この電圧発生手段からの電圧を平滑化し、その
平滑化出力で前記駆動用トランジスタのベースお
よびエミツタに供給される色信号および輝度信号
を制御して受像管への入力レベルを最適レベルに
自動調整する制御回路とを具備してなる映像増幅
回路。[Claims for Utility Model Registration] A color signal is supplied to the base, a luminance signal is supplied to the emitter, and it is connected to a reference potential point via a resistor, and a collector is connected to a voltage source via a resistor. an output circuit including a transistor, and first and second transistors each having a base supplied with an output signal from the collector of the driving transistor and connected in a push-pull manner, and supplying an amplified video output to a picture tube; , is connected in series to the main current path of the first and second transistors, and when the white peak level of the video output is within a predetermined range, generates a voltage that follows the change in the video output, and changes the video output. means for generating a constant voltage when the white peak level increases beyond a predetermined range; and smoothing the voltage from the voltage generating means, and supplying the smoothed output to the base and emitter of the driving transistor. A video amplification circuit comprising a control circuit that controls a color signal and a luminance signal to automatically adjust the input level to a picture tube to an optimum level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9757185U JPS628762U (en) | 1985-06-28 | 1985-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9757185U JPS628762U (en) | 1985-06-28 | 1985-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS628762U true JPS628762U (en) | 1987-01-20 |
Family
ID=30964645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9757185U Pending JPS628762U (en) | 1985-06-28 | 1985-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS628762U (en) |
-
1985
- 1985-06-28 JP JP9757185U patent/JPS628762U/ja active Pending
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