JPH0221978U - - Google Patents
Info
- Publication number
- JPH0221978U JPH0221978U JP10019888U JP10019888U JPH0221978U JP H0221978 U JPH0221978 U JP H0221978U JP 10019888 U JP10019888 U JP 10019888U JP 10019888 U JP10019888 U JP 10019888U JP H0221978 U JPH0221978 U JP H0221978U
- Authority
- JP
- Japan
- Prior art keywords
- character
- video
- transistor
- amplification transistor
- collector
- 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 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
- Studio Circuits (AREA)
Description
第１図は本考案の実施例の映像増幅装置を示す
回路図、第２図は従来の実施例を示す回路図であ
る。
同図中、１はキヤラクタ信号入力端子、２は緑
色色差信号入力端子、３は青色色差信号入力端子
、４は赤色色差信号入力端子、５は輝度信号入力
端子、６はブラウン管、Ｑ１，Ｑ２，Ｑ３，Ｑ４
はトランジスタ、Ｄ１はダイオード、Ｌ１，Ｌ２
，Ｌ３はインダクタ、Ｒ１〜３，Ｒ５，Ｒ７〜１
１，Ｒ１３〜１５，Ｒ１７，Ｒ１９〜２１は抵抗
、Ｒ４，Ｒ６，Ｒ１２，Ｒ１６，Ｒ１８は可変抵
抗、Ｃ１〜３はコンデンサである。
FIG. 1 is a circuit diagram showing a video amplifying device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional embodiment. In the figure, 1 is a character signal input terminal, 2 is a green color difference signal input terminal, 3 is a blue color difference signal input terminal, 4 is a red color difference signal input terminal, 5 is a luminance signal input terminal, 6 is a cathode ray tube, Q1, Q2, Q3, Q4
is a transistor, D1 is a diode, L1, L2
, L3 is an inductor, R1~3, R5, R7~1
1, R13-15, R17, R19-21 are resistors, R4, R6, R12, R16, R18 are variable resistors, and C1-3 are capacitors.
Claims (1)
キヤラクタ信号入力によつてオンされ、前記映像
信号増幅トランジスタとの共通の負荷に出力する
キヤラクタ信号増幅トランジスタとを有し、キヤ
ラクタ信号および／または映像信号を画面に映出
する映像増幅装置において、同キヤラクタ信号増
幅トランジスタのコレクタと前記共通の負荷との
間に、同トランジスタのコレクタ電流と順方向で
あつて同コレクタに直列なるダイオードを接続し
たことを特徴とする映像増幅装置。 It has a video signal amplification transistor and a character signal amplification transistor that is turned on by a character signal input such as a character or a figure and outputs to a common load with the video signal amplification transistor, and outputs a character signal and/or a video signal. A video amplification device for displaying images on a screen, characterized in that a diode is connected between the collector of the character signal amplification transistor and the common load in the forward direction of the collector current of the transistor and in series with the collector. Video amplification device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10019888U JPH0221978U (en) | 1988-07-28 | 1988-07-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10019888U JPH0221978U (en) | 1988-07-28 | 1988-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0221978U true JPH0221978U (en) | 1990-02-14 |
Family
ID=31328059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10019888U Pending JPH0221978U (en) | 1988-07-28 | 1988-07-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0221978U (en) |
-
1988
- 1988-07-28 JP JP10019888U patent/JPH0221978U/ja active Pending
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