JPH03120691U - - Google Patents
Info
- Publication number
- JPH03120691U JPH03120691U JP2899790U JP2899790U JPH03120691U JP H03120691 U JPH03120691 U JP H03120691U JP 2899790 U JP2899790 U JP 2899790U JP 2899790 U JP2899790 U JP 2899790U JP H03120691 U JPH03120691 U JP H03120691U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- input terminal
- terminal
- high voltage
- power supply
- 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
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Rectifiers (AREA)
- Control Of Voltage And Current In General (AREA)
Description
第１図は本考案による高圧安定回路の保護装置
の一実施例を示す回路図、第２図は第１図の保護
装置の動作を説明するための動作波形図、第３図
は従来の高圧安定回路を示すブロツク図である。
１……水平出力トランジスタ、２……フライバ
ツクトランス、４……ダンパダイオード、６……
電源回路、９……高圧ライン、１０……受像管、
１１……高圧端子、１２……増幅器、１３……制
御トランジスタ、１４……コンパレータ、Ｒ１，
Ｒ２……ブリーダ抵抗、Ｒ３，Ｒ４……分圧抵抗
、Ｒ７……時定数用の抵抗、Ｃ……時定数用のコ
ンデンサ、ＶＦ……帰還電圧、ＶＳ……直流電源
電圧。
Fig. 1 is a circuit diagram showing an embodiment of the high voltage stabilizing circuit protection device according to the present invention, Fig. 2 is an operation waveform diagram to explain the operation of the protection device shown in Fig. 1, and Fig. 3 is a conventional high voltage stabilizing circuit protection device. FIG. 3 is a block diagram showing a stabilizing circuit. 1... Horizontal output transistor, 2... Flyback transformer, 4... Damper diode, 6...
Power supply circuit, 9...High voltage line, 10... Picture tube,
11...High voltage terminal, 12...Amplifier, 13...Control transistor, 14...Comparator, R1 ,
R2 ...Bleeder resistance, R3 , R4 ...Voltage dividing resistor, R7 ...Resistance for time constant, C...Capacitor for time constant, VF...Feedback voltage, VS...DC power supply voltage.
Claims (1)
た電圧を検出する電圧検出回路と、この電圧検出
回路による検出電圧が制御入力端子に入力され、
水平出力トランジスタが接続されるフライバツク
トランスの巻線に印加するための電源電圧を該検
出電圧に基づいて制御し、上記高電圧の安定化を
図る電源回路とを有する高圧安定回路において、 水平周波数を電圧変換した変換電圧が一方の入
力端子に加えられるとともに、この一方の入力端
子と他方の入力端子との間に抵抗が接続され、こ
の他方の入力端子と接地間にコンデンサが接続さ
れるコンパレータと、 上記電源回路の制御入力端子と接地間に抵抗を
介して接続され、スイツチ制御端に上記コンパレ
ータの出力端子が接続さるスイツチ素子とを備え
ることを特徴とする高圧安定回路の保護装置。[Claim for Utility Model Registration] A voltage detection circuit that detects a voltage proportional to the high voltage applied to the high voltage terminal of the picture tube, and a voltage detected by this voltage detection circuit is input to a control input terminal,
A high voltage stabilizing circuit comprising: a power supply circuit for stabilizing the high voltage by controlling a power supply voltage applied to a winding of a flyback transformer to which a horizontal output transistor is connected based on the detected voltage; A comparator in which a converted voltage is applied to one input terminal, a resistor is connected between this one input terminal and the other input terminal, and a capacitor is connected between this other input terminal and ground. and a switch element connected between the control input terminal of the power supply circuit and ground via a resistor, and the output terminal of the comparator connected to the switch control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2899790U JPH03120691U (en) | 1990-03-22 | 1990-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2899790U JPH03120691U (en) | 1990-03-22 | 1990-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03120691U true JPH03120691U (en) | 1991-12-11 |
Family
ID=31531779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2899790U Pending JPH03120691U (en) | 1990-03-22 | 1990-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03120691U (en) |
-
1990
- 1990-03-22 JP JP2899790U patent/JPH03120691U/ja active Pending
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