JPH01132183U - - Google Patents
Info
- Publication number
- JPH01132183U JPH01132183U JP1988027108U JP2710888U JPH01132183U JP H01132183 U JPH01132183 U JP H01132183U JP 1988027108 U JP1988027108 U JP 1988027108U JP 2710888 U JP2710888 U JP 2710888U JP H01132183 U JPH01132183 U JP H01132183U
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- circuit
- integration circuit
- electric field
- detection device
- 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
- 230000005684 electric field Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims 2
- 239000002131 composite material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例を示すものであつて
、弱電界検出装置の回路図である。第２図は垂直
同期信号と水平同期信号の各積分電圧の電界強度
との関係を示すグラフである。
３は弱電界検出装置、６は第１演算増幅器（演
算増幅器）、８は積分回路、９は第２演算増幅器
（比較回路）である。
FIG. 1 shows one embodiment of the present invention, and is a circuit diagram of a weak electric field detection device. FIG. 2 is a graph showing the relationship between the electric field strength of each integrated voltage of the vertical synchronizing signal and the horizontal synchronizing signal. 3 is a weak electric field detection device, 6 is a first operational amplifier (operational amplifier), 8 is an integrating circuit, and 9 is a second operational amplifier (comparison circuit).
Claims (1)
スルーレートが水平同期信号のパルス幅に対して
十分に低い演算増幅器と、この演算増幅器の出力
電圧を積分する積分回路と、この積分回路から出
力された積分電圧を所定の閾値と比較する比較回
路とを有すること特徴とするテレビジヨン受信回
路の弱電界検出装置。 Input the composite sync signal separated from the video signal,
An operational amplifier whose slew rate is sufficiently low relative to the pulse width of the horizontal synchronization signal, an integration circuit that integrates the output voltage of this operational amplifier, and a comparison circuit that compares the integrated voltage output from this integration circuit with a predetermined threshold. A weak electric field detection device for a television receiving circuit, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988027108U JPH01132183U (en) | 1988-02-29 | 1988-02-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988027108U JPH01132183U (en) | 1988-02-29 | 1988-02-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01132183U true JPH01132183U (en) | 1989-09-07 |
Family
ID=31249329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988027108U Pending JPH01132183U (en) | 1988-02-29 | 1988-02-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01132183U (en) |
-
1988
- 1988-02-29 JP JP1988027108U patent/JPH01132183U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01132183U (en) | ||
| JPH0268573U (en) | ||
| JPS6214858U (en) | ||
| JPS6214859U (en) | ||
| JPH0243084U (en) | ||
| JPH032775U (en) | ||
| JPH02128487U (en) | ||
| JPS6285053U (en) | ||
| JPH01169887U (en) | ||
| JPS59157362U (en) | Synchronous signal separation circuit | |
| JPH0282170U (en) | ||
| JPH0177070U (en) | ||
| JPS58172272U (en) | TV receiver channel switching detection circuit | |
| JPH0273886U (en) | ||
| JPS621481U (en) | ||
| JPH0485881U (en) | ||
| JPS6293863U (en) | ||
| JPH0314885U (en) | ||
| JPS6338466U (en) | ||
| JPH02138963U (en) | ||
| JPS63163068U (en) | ||
| JPS62177178U (en) | ||
| JPH01129972U (en) | ||
| JPH02128468U (en) | ||
| JPS6219886U (en) |