JPH0419868U - - Google Patents
Info
- Publication number
- JPH0419868U JPH0419868U JP5749090U JP5749090U JPH0419868U JP H0419868 U JPH0419868 U JP H0419868U JP 5749090 U JP5749090 U JP 5749090U JP 5749090 U JP5749090 U JP 5749090U JP H0419868 U JPH0419868 U JP H0419868U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- transistor
- flyback transformer
- power supply
- emitter
- 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
- 238000004804 winding Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案による過電流検出回路の一実施
例の回路図である。
図中、１は水平発振ドライブ回路、２は水平ド
ライブトランス、３は水平出力トランジスタ、４
は偏向ヨーク、５はＦＢＴ、６はブラウン管、７
は電源端子、８は水平パルス出力端子、９，１０
はＦＢＴの２次側巻線、１１＋Ｂ電源は、１２，
１４，１８，２２は抵抗、１３，１６は電圧、１
５はダイオード、１７はコンデンサ、１９はトラ
ンジスタ、２０は検出信号出力端子、２１は発振
停止制御回路である。
FIG. 1 is a circuit diagram of an embodiment of an overcurrent detection circuit according to the present invention. In the figure, 1 is a horizontal oscillation drive circuit, 2 is a horizontal drive transformer, 3 is a horizontal output transistor, and 4 is a horizontal oscillation drive circuit.
is a deflection yoke, 5 is an FBT, 6 is a cathode ray tube, and 7 is a deflection yoke.
is a power supply terminal, 8 is a horizontal pulse output terminal, 9, 10
is the secondary winding of FBT, 11+B power supply is 12,
14, 18, 22 are resistances, 13, 16 are voltages, 1
5 is a diode, 17 is a capacitor, 19 is a transistor, 20 is a detection signal output terminal, and 21 is an oscillation stop control circuit.
Claims (1)
電源端に、他端を水平出力トランジスタに接続し
てなるフライバツク・トランスの水平出力回路に
おいて、電源端とフライバツク・トランスの１次
側巻線の一端間に第１抵抗器を挿入すると共に、
順方向のダイオードを介し制御トランジスタのエ
ミツタに接続し、コンデンサと第２抵抗器の並列
回路を該トランジスタのベース・エミツタ間に接
続し、該ベースに第３抵抗器を介し前記フライバ
ツク・トランスの１次側巻線の一端に接続してな
り、前記トランジスタのコレクタを第４抵抗器を
介し接地すると共に、コレクタから信号を出力す
るようにした過電流検出回路。 In a horizontal output circuit of a flyback transformer in which one end of the primary winding of the flyback transformer is connected to a power supply terminal and the other end is connected to a horizontal output transistor, the power supply end and one end of the primary winding of the flyback transformer are Inserting the first resistor in between,
It is connected to the emitter of the control transistor through a forward diode, a parallel circuit of a capacitor and a second resistor is connected between the base and emitter of the transistor, and one of the flyback transformers is connected to the base through a third resistor. An overcurrent detection circuit connected to one end of the next winding, grounding the collector of the transistor via a fourth resistor, and outputting a signal from the collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5749090U JPH0419868U (en) | 1990-05-31 | 1990-05-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5749090U JPH0419868U (en) | 1990-05-31 | 1990-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0419868U true JPH0419868U (en) | 1992-02-19 |
Family
ID=31582245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5749090U Pending JPH0419868U (en) | 1990-05-31 | 1990-05-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0419868U (en) |
-
1990
- 1990-05-31 JP JP5749090U patent/JPH0419868U/ja active Pending
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