JPS6423171U - - Google Patents
Info
- Publication number
- JPS6423171U JPS6423171U JP11793387U JP11793387U JPS6423171U JP S6423171 U JPS6423171 U JP S6423171U JP 11793387 U JP11793387 U JP 11793387U JP 11793387 U JP11793387 U JP 11793387U JP S6423171 U JPS6423171 U JP S6423171U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- ray tube
- cathode ray
- flyback transformer
- 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
- 230000002265 prevention Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は、本考案による陰極線管スポツト焼け
防止回路の一実施例を示す回路図、第２図は、中
高圧電源回路図を示す回路図である。
１……高圧プロテクト回路、２……水平同期信
号発生回路、３……ダイオード、７……フライバ
ツクトランス、８……トランジスタ、９……トラ
ンジスタ、１０……抵抗、１１……抵抗、１２…
…ツエナーダイオード、１３……保持回路、１６
……ダイオード、１７……コンデンサー。
FIG. 1 is a circuit diagram showing an embodiment of a cathode ray tube spot burn prevention circuit according to the present invention, and FIG. 2 is a circuit diagram showing a medium/high voltage power supply circuit diagram. DESCRIPTION OF SYMBOLS 1... High voltage protection circuit, 2... Horizontal synchronous signal generation circuit, 3... Diode, 7... Flyback transformer, 8... Transistor, 9... Transistor, 10... Resistor, 11... Resistor, 12...
... Zener diode, 13 ... Holding circuit, 16
...Diode, 17...Capacitor.
Claims (1)
定値を越えたことを検出する電圧検出回路と、該
電圧検出回路の出力を所定時間保持する保持回路
と、該保持回路の出力により映像出力回路におけ
る増幅動作を停止する増幅動作回路とを有する陰
極線管スポツト焼け防止回路。 (2) 前記保持回路の電源は、前記フライバツク
トランスの二次出力から取り出すことを特徴とす
る実用新案登録請求の範囲第１項記載の陰極線管
スポツト焼け防止回路。[Claims for Utility Model Registration] (1) A voltage detection circuit that detects that the secondary output voltage of a flyback transformer exceeds a predetermined value, a holding circuit that holds the output of the voltage detection circuit for a predetermined time, and a A cathode ray tube spot burn prevention circuit comprising an amplification operation circuit that stops amplification operation in a video output circuit according to an output of a holding circuit. (2) The cathode ray tube spot burn prevention circuit according to claim 1, wherein the power source for the holding circuit is extracted from the secondary output of the flyback transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11793387U JPS6423171U (en) | 1987-07-31 | 1987-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11793387U JPS6423171U (en) | 1987-07-31 | 1987-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6423171U true JPS6423171U (en) | 1989-02-07 |
Family
ID=31361833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11793387U Pending JPS6423171U (en) | 1987-07-31 | 1987-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6423171U (en) |
-
1987
- 1987-07-31 JP JP11793387U patent/JPS6423171U/ja active Pending
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