JPH03128375U - - Google Patents
Info
- Publication number
- JPH03128375U JPH03128375U JP3578390U JP3578390U JPH03128375U JP H03128375 U JPH03128375 U JP H03128375U JP 3578390 U JP3578390 U JP 3578390U JP 3578390 U JP3578390 U JP 3578390U JP H03128375 U JPH03128375 U JP H03128375U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- video output
- output circuit
- power
- zener diode
- 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
- 229920006395 saturated elastomer Polymers 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
本考案の回路ブロツク図、第３図は従来技術の回
路図である。
１……スポツトキラー回路、３，４，５，１４
，１５，１６……抵抗、８，１７，１８……コン
デンサ、２……ツエナーダイオード、９，２１…
…ダイオード、６，７，１９……トランジスタ、
１２……映像信号調節回路、１０，１３……映像
信号出力回路、１１，２０……ＣＲＴ、Ｖ１……
映像信号入力端子、＋Ｂ，Ｖｃｃ１……電源。
FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. 2 is a circuit block diagram of the present invention, and FIG. 3 is a circuit diagram of a prior art. 1... Spot killer circuit, 3, 4, 5, 14
, 15, 16... Resistor, 8, 17, 18... Capacitor, 2... Zener diode, 9, 21...
...diode, 6,7,19...transistor,
12...Video signal adjustment circuit, 10, 13...Video signal output circuit, 11, 20...CRT, V1...
Video signal input terminal, +B, Vcc1...power supply.
Claims (1)
用いて電源オフを検出する回路と、マイナス電源
を用いて、構成され電源オフ時映像出力回路を瞬
時に飽和させることを特徴とするスポツトキラー
回路。 A spot killer circuit is characterized in that the video output circuit includes a circuit that detects power off using a Zener diode and a negative power supply, and is characterized in that the video output circuit is instantaneously saturated when the power is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3578390U JPH03128375U (en) | 1990-04-04 | 1990-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3578390U JPH03128375U (en) | 1990-04-04 | 1990-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03128375U true JPH03128375U (en) | 1991-12-24 |
Family
ID=31541441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3578390U Pending JPH03128375U (en) | 1990-04-04 | 1990-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03128375U (en) |
-
1990
- 1990-04-04 JP JP3578390U patent/JPH03128375U/ja active Pending