JPH0438181U - - Google Patents
Info
- Publication number
- JPH0438181U JPH0438181U JP7995190U JP7995190U JPH0438181U JP H0438181 U JPH0438181 U JP H0438181U JP 7995190 U JP7995190 U JP 7995190U JP 7995190 U JP7995190 U JP 7995190U JP H0438181 U JPH0438181 U JP H0438181U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- ray
- anode
- anode voltage
- 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.)
- Granted
Links
- 230000001012 protector Effects 0.000 claims 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図はこの考案の一実施例によるＸ線保護回
路のブロツク図、第２図は同上実施例の動作状態
を示すグラフ、第３図は従来のＸ線保護回路のブ
ロツク図、第４図は従来のＸ線保護回路の動作状
態を示すグラフである。
３……高圧発生回路、５……受像管、６……レ
ギユレータ回路、７，８……分割抵抗、９……比
較回路、１０……検出抵抗、１１……ツエナーダ
イオード。なお、図中、同一符号は同一、又は相
当部分を示す。
Figure 1 is a block diagram of an X-ray protection circuit according to an embodiment of this invention, Figure 2 is a graph showing the operating state of the same embodiment, Figure 3 is a block diagram of a conventional X-ray protection circuit, and Figure 4. is a graph showing the operating state of a conventional X-ray protection circuit. 3... High voltage generation circuit, 5... Picture tube, 6... Regulator circuit, 7, 8... Division resistor, 9... Comparison circuit, 10... Detection resistor, 11... Zener diode. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
ード電圧を供給する高圧発生回路と、上記アノー
ド電圧の変動を検知して上記アノード電圧が所定
電圧になるように上記高圧発生回路を制御するレ
ギユレータ回路と、上記アノード電圧を分圧する
分割抵抗と、上記分圧されたアノード電圧と基準
電圧と比較して上記分圧されたアノード電圧が基
準電圧以上になると上記受像管のビーム電流の増
加にともなうＸ線の発生を抑制するためのＸ線プ
ロテクタを作動させ、かつ上記テレビジヨン受像
機が異常作動状態になると上記ビーム電流の増加
にともなう上記基準電圧の低下に起因して上記Ｘ
線プロテクタの動作レベルを低下させる比較回路
を備えたＸ線保護回路。 a high voltage generation circuit that supplies an anode voltage to an anode of a picture tube of a television receiver; a regulator circuit that detects fluctuations in the anode voltage and controls the high voltage generation circuit so that the anode voltage becomes a predetermined voltage; A dividing resistor that divides the anode voltage is used to compare the divided anode voltage with a reference voltage, and when the divided anode voltage exceeds the reference voltage, X-ray When the X-ray protector for suppressing the generation of X-rays is activated and the television receiver is in an abnormal operating state, the X-ray
An X-ray protection circuit with a comparison circuit that reduces the operating level of the ray protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7995190U JPH0756545Y2 (en) | 1990-07-25 | 1990-07-25 | X-ray protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7995190U JPH0756545Y2 (en) | 1990-07-25 | 1990-07-25 | X-ray protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0438181U true JPH0438181U (en) | 1992-03-31 |
| JPH0756545Y2 JPH0756545Y2 (en) | 1995-12-25 |
Family
ID=31624577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7995190U Expired - Lifetime JPH0756545Y2 (en) | 1990-07-25 | 1990-07-25 | X-ray protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0756545Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7145536B1 (en) | 1999-03-26 | 2006-12-05 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device |
-
1990
- 1990-07-25 JP JP7995190U patent/JPH0756545Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0756545Y2 (en) | 1995-12-25 |
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