JPH0186770U - - Google Patents
Info
- Publication number
- JPH0186770U JPH0186770U JP18271987U JP18271987U JPH0186770U JP H0186770 U JPH0186770 U JP H0186770U JP 18271987 U JP18271987 U JP 18271987U JP 18271987 U JP18271987 U JP 18271987U JP H0186770 U JPH0186770 U JP H0186770U
- Authority
- JP
- Japan
- Prior art keywords
- power
- color signal
- output device
- detection circuit
- signal output
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は本考案による色信号出力装置の一実施
例を示す接続図、第２図は各部の電源電圧の電源
スイツチのオフ操作の変化を示す特性曲線図、第
３図はカソード電圧の変化を示す信号波形図、第
４図は従来装置を示す接続図、第５図は従来装置
の欠点の説明に供する略線図である。
１……断間増幅断、２……出力増幅断、３……
受像管、４……電源断検出回路、５……ミユート
回路、Ｑ１……マトリクス変換用トランジスタ。
Figure 1 is a connection diagram showing an embodiment of the color signal output device according to the present invention, Figure 2 is a characteristic curve diagram showing changes in the power supply voltage of each part when the power switch is turned off, and Figure 3 is a change in cathode voltage. FIG. 4 is a connection diagram showing a conventional device, and FIG. 5 is a schematic diagram illustrating drawbacks of the conventional device. 1... Intermittent amplification cut off, 2... Output amplification cut off, 3...
Picture tube, 4... Power failure detection circuit, 5... Mute circuit, Q1... Matrix conversion transistor.
Claims (1)
信号出力装置において、 装置全体の電源に対するオフ操作がなされたと
き、当該色信号出力装置に供給されている電源電
圧より早く低下していく電源電圧に基づいて電源
断指令を検出する電源断指令検出回路と、 この電源断指令検出回路からの検出信号に基づ
いて上記受像管に対するカソード電圧を上記色信
号レベルに関係なく強制的にカツトオフレベルに
変化させるミユート回路とを備えたことを特徴と
する色信号出力装置。[Claims for Utility Model Registration] In a color signal output device that amplifies a color signal and supplies it to the cathode of a picture tube, the power supply voltage supplied to the color signal output device when the power of the entire device is turned off. a power-off command detection circuit that detects a power-off command based on a power supply voltage that decreases faster; and a power-off command detection circuit that relates the cathode voltage to the picture tube to the color signal level based on the detection signal from the power-off command detection circuit. A color signal output device characterized by comprising a mute circuit that forcibly changes to a cut-off level without the need for a cut-off level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18271987U JPH0186770U (en) | 1987-11-30 | 1987-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18271987U JPH0186770U (en) | 1987-11-30 | 1987-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0186770U true JPH0186770U (en) | 1989-06-08 |
Family
ID=31474163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18271987U Pending JPH0186770U (en) | 1987-11-30 | 1987-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0186770U (en) |
-
1987
- 1987-11-30 JP JP18271987U patent/JPH0186770U/ja active Pending