JPH0351556U - - Google Patents
Info
- Publication number
- JPH0351556U JPH0351556U JP11103989U JP11103989U JPH0351556U JP H0351556 U JPH0351556 U JP H0351556U JP 11103989 U JP11103989 U JP 11103989U JP 11103989 U JP11103989 U JP 11103989U JP H0351556 U JPH0351556 U JP H0351556U
- Authority
- JP
- Japan
- Prior art keywords
- horizontal
- output
- section
- control signal
- circuit
- 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
- 230000010355 oscillation Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Description
第１図は本考案実施例のブロツク図、第２図は
本考案実施例の示す要部電子回路図、第３図は従
来の実施例のブロツク図である。
１……同期信号入力、２……水平発振部、３…
…水平出力部、４……水平偏向コイル、５……フ
ライバツクトランス、５ａ……同トランスの一次
巻線、５ｂ……同トランスの二次巻線、５ｃ……
高圧巻線、６……ダイオード、７……高圧整流器
、８……低圧電源出力、９……高圧電源出力、１
０……電源入力、１１……過電圧検出回路、１２
……過電圧制御信号、１３……過電流検出回路、
１４……過電流制御信号、２０〜２３および４０
〜４２……コンデンサ、３０……トランジスタ、
３１……ツエナダイオード、３２……電源出力、
３３〜３９……抵抗である。
FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a main electronic circuit diagram of the embodiment of the present invention, and FIG. 3 is a block diagram of a conventional embodiment. 1...Synchronization signal input, 2...Horizontal oscillation section, 3...
...Horizontal output section, 4...Horizontal deflection coil, 5...Flyback transformer, 5a...Primary winding of the same transformer, 5b...Secondary winding of the same transformer, 5c...
High voltage winding, 6... Diode, 7... High voltage rectifier, 8... Low voltage power supply output, 9... High voltage power supply output, 1
0...Power input, 11...Overvoltage detection circuit, 12
...Overvoltage control signal, 13...Overcurrent detection circuit,
14... Overcurrent control signal, 20 to 23 and 40
~42...Capacitor, 30...Transistor,
31...Zena diode, 32...Power output,
33-39...Resistance.
Claims (1)
パルスを生成する水平発振部と、同発振部の出力
するパルスを増幅し水平偏向コイルにのこぎり波
電流を流す水平出力部と、同出力部の出力の一部
でフライバツクトランスを駆動し、同トランスの
出力を整流してＣＲＴに印加する高電圧および他
の回路へ供給する低電圧を出力し、同低電圧が所
定値を越えるとき前記水平発振部の動作を停止せ
しめる制御信号を出力する過電圧検出回路を備え
た水平偏向回路において、前記フライバツクトラ
ンス一次巻線の電源供給端子と同巻線を介して前
記水平出力部に電源を供給する電源入力との間に
、所定値を越える電流を検出したとき制御信号を
出力する過電流検出回路を挿入し、同制御信号に
より前記水平発振部の動作を停止することを特徴
とする水平偏向回路の保護回路。 (2) 前記過電流検出回路の出力する制御信号に
より、前記水平出力部に供給する電源を遮断する
ことを特徴とした水平偏向回路の保護回路。[Claims for Utility Model Registration] (1) A horizontal oscillation section that generates horizontal deflection pulses in synchronization with an input horizontal synchronization signal, and a sawtooth wave current that amplifies the pulses output from the oscillation section and flows through the horizontal deflection coil. The horizontal output section and part of the output of the output section drive a flyback transformer, and the output of the transformer is rectified to output a high voltage to be applied to the CRT and a low voltage to be supplied to other circuits. In a horizontal deflection circuit equipped with an overvoltage detection circuit that outputs a control signal to stop the operation of the horizontal oscillation section when the voltage exceeds a predetermined value, An overcurrent detection circuit that outputs a control signal when a current exceeding a predetermined value is detected is inserted between the power supply input that supplies power to the horizontal output section, and the operation of the horizontal oscillation section is stopped by the control signal. A protection circuit for a horizontal deflection circuit. (2) A protection circuit for a horizontal deflection circuit, characterized in that a control signal output from the overcurrent detection circuit shuts off power supplied to the horizontal output section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11103989U JPH0351556U (en) | 1989-09-22 | 1989-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11103989U JPH0351556U (en) | 1989-09-22 | 1989-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0351556U true JPH0351556U (en) | 1991-05-20 |
Family
ID=31659539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11103989U Pending JPH0351556U (en) | 1989-09-22 | 1989-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351556U (en) |
-
1989
- 1989-09-22 JP JP11103989U patent/JPH0351556U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4258309A (en) | Switching type power supply circuit | |
| US6504733B1 (en) | Switch mode power supply | |
| JPH0351556U (en) | ||
| JPH0127426Y2 (en) | ||
| JPS6185962U (en) | ||
| JPH0215419Y2 (en) | ||
| JPS5855703Y2 (en) | Power supply for starting horizontal oscillation | |
| JPS5924214Y2 (en) | television receiver | |
| JP3077171B2 (en) | High voltage power supply | |
| JPS63191766U (en) | ||
| JPS63113969U (en) | ||
| JPH0249332U (en) | ||
| JPH0195868U (en) | ||
| JPS6129564U (en) | CRT power circuit | |
| JPH037679U (en) | ||
| JPH0312565U (en) | ||
| JPH02129190U (en) | ||
| JPS5975785U (en) | Switching regulator overcurrent protection circuit | |
| JPH0394087U (en) | ||
| JPS5899071A (en) | Horizontal deflection device | |
| JPS6387167A (en) | Protective circuit for dc-dc converter | |
| JPH01131289U (en) | ||
| JPS6259467A (en) | Horizontal drive circuit | |
| JPH05323886A (en) | X-ray and overvoltage protecting circuit of display device | |
| JPH0314984U (en) |