JPS63192768U - - Google Patents
Info
- Publication number
- JPS63192768U JPS63192768U JP8328287U JP8328287U JPS63192768U JP S63192768 U JPS63192768 U JP S63192768U JP 8328287 U JP8328287 U JP 8328287U JP 8328287 U JP8328287 U JP 8328287U JP S63192768 U JPS63192768 U JP S63192768U
- Authority
- JP
- Japan
- Prior art keywords
- horizontal output
- control signal
- horizontal
- circuit
- output transistor
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は、本考案の一実施例による水平出力ト
ランジスタ保護回路の構成を示す回路図、第２図
は、オートスキヤン型デイスプレイテレビに使用
される水平出力回路の構成を示す回路図である。
１０……Ｆ／Ｖ変換回路、１２……コンパレー
タ、１４……切替信号発生回路、１６〜２０……
ダイオード、２２……制御信号発生回路、２６，
３４，３６……トランジスタ、２４，２８，３０
，３２，３８……抵抗、１００……水平出力トラ
ンジスタ、１０４，１１４，１１６……共振コン
デンサ、１０８，１１８，１２０……Ｓ字補正コ
ンデンサ、１１０，１２２，１２４……ワイズコ
イル、１１２……フライバツクトランス（ＦＢＴ
）、１３０〜１４０……リレー、１４２……電源
端子。
FIG. 1 is a circuit diagram showing the configuration of a horizontal output transistor protection circuit according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing the configuration of a horizontal output circuit used in an auto-scan type display television. 10...F/V conversion circuit, 12...Comparator, 14...Switching signal generation circuit, 16-20...
Diode, 22... Control signal generation circuit, 26,
34, 36...transistor, 24, 28, 30
, 32, 38... Resistor, 100... Horizontal output transistor, 104, 114, 116... Resonance capacitor, 108, 118, 120... S-shaped correction capacitor, 110, 122, 124... Width coil, 112... Flyback transformer (FBT)
), 130-140...Relay, 142...Power terminal.
Claims (1)
れに対応して自動的に水平出力回路内の所定の素
子を切り替えるようにしたオートスキヤン型のデ
イスプレイテレビにおいて、 入力される水平同期信号に基づいて前記水平周
波数の切り替わつたことを検出する検出回路と、 前記検出回路からの検出信号に応動して所定の
時間制御信号を発生する制御信号発生回路と、 電源端子と水平出力トランジスタとの間に接続
され、前記制御信号発生回路から前記制御信号が
出力された時前記水平出力トランジスタに印加さ
れる電源電圧を所定の時間電圧降下させるスイツ
チング手段と、 を具備することを特徴とする水平出力トランジス
タ保護回路。[Claim for Utility Model Registration] In an auto-scan type display television that automatically switches predetermined elements in a horizontal output circuit in response to a plurality of scanning modes with different horizontal frequencies, a detection circuit that detects switching of the horizontal frequency based on a synchronization signal; a control signal generation circuit that generates a control signal for a predetermined time in response to the detection signal from the detection circuit; a power supply terminal and a horizontal output; and switching means connected between the horizontal output transistor and the horizontal output transistor to lower the power supply voltage applied to the horizontal output transistor for a predetermined time when the control signal is output from the control signal generation circuit. horizontal output transistor protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8328287U JPS63192768U (en) | 1987-05-30 | 1987-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8328287U JPS63192768U (en) | 1987-05-30 | 1987-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63192768U true JPS63192768U (en) | 1988-12-12 |
Family
ID=30936725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8328287U Pending JPS63192768U (en) | 1987-05-30 | 1987-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63192768U (en) |
-
1987
- 1987-05-30 JP JP8328287U patent/JPS63192768U/ja active Pending
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