JPS6181234U - - Google Patents
Info
- Publication number
- JPS6181234U JPS6181234U JP1984165395U JP16539584U JPS6181234U JP S6181234 U JPS6181234 U JP S6181234U JP 1984165395 U JP1984165395 U JP 1984165395U JP 16539584 U JP16539584 U JP 16539584U JP S6181234 U JPS6181234 U JP S6181234U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- electric field
- output
- field detection
- receiver
- 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 7
- 238000001514 detection method Methods 0.000 claims 5
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Noise Elimination (AREA)
Description
第１図〜第３図は本考案のそれぞれ異なる実施
例の電気回路図、第４図は受信電波の電界強度分
布例を示す線図、第５図は受信電波の中間周波信
号レベルの分布を示す線図、第６図は受信電波の
検波出力中のノイズ成分のレベルを示す線図であ
る。
１はノイズアンプ、３，４，９，１０は整流回
路を構成するダイオード、７は第１の比較回路、
１３は第２の比較回路、１４はナンド回路である
。
Figures 1 to 3 are electrical circuit diagrams of different embodiments of the present invention, Figure 4 is a line diagram showing an example of the electric field strength distribution of received radio waves, and Figure 5 is a diagram showing the distribution of intermediate frequency signal levels of received radio waves. The diagram shown in FIG. 6 is a diagram showing the level of noise components in the detected output of received radio waves. 1 is a noise amplifier; 3, 4, 9, and 10 are diodes forming a rectifier circuit; 7 is a first comparison circuit;
13 is a second comparison circuit, and 14 is a NAND circuit.
Claims (1)
め設定された値以上か否かを検知する電界検知回
路において、前記ＦＭ受信機の検波出力中に含ま
れるノイズ成分を増幅するノイズアンプと該ノイ
ズアンプの出力を整流する第１の整流回路と該第
１の整流回路の出力レベルが第１の基準電圧以下
であることを検出する第１の比較回路とから成る
第１の電界検知部、前記ＦＭ受信機の中間周波増
幅回路の出力を整流する第２の整流回路と該第２
の整流回路の出力レベルが第２の基準電圧以上で
あることを検出する第２の比較回路とから成る第
２の電界検知部、前記該１の比較回路出力と前記
第２の比較回路の出力の論理積を電界検知信号と
して出力するゲート回路を具備したことを特徴と
する電界検知回路。 An electric field detection circuit that detects whether the strength of the electric field of radio waves received by the FM receiver is equal to or higher than a preset value includes a noise amplifier that amplifies noise components included in the detected output of the FM receiver; a first electric field detection section comprising a first rectifier circuit that rectifies the output of the noise amplifier and a first comparison circuit that detects that the output level of the first rectifier circuit is equal to or lower than a first reference voltage; , a second rectifier circuit for rectifying the output of the intermediate frequency amplification circuit of the FM receiver;
a second electric field detection section comprising a second comparator circuit that detects that the output level of the rectifier circuit is equal to or higher than a second reference voltage; an output of the first comparator circuit and an output of the second comparator circuit; An electric field detection circuit characterized by comprising a gate circuit that outputs the logical product of as an electric field detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984165395U JPS6181234U (en) | 1984-10-31 | 1984-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984165395U JPS6181234U (en) | 1984-10-31 | 1984-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6181234U true JPS6181234U (en) | 1986-05-29 |
Family
ID=30723247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984165395U Pending JPS6181234U (en) | 1984-10-31 | 1984-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6181234U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725730A (en) * | 1980-07-21 | 1982-02-10 | Mitsubishi Electric Corp | Detecting device of noise intensity |
-
1984
- 1984-10-31 JP JP1984165395U patent/JPS6181234U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725730A (en) * | 1980-07-21 | 1982-02-10 | Mitsubishi Electric Corp | Detecting device of noise intensity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6181234U (en) | ||
| JPS61146037U (en) | ||
| JPH0181041U (en) | ||
| JPH0614524Y2 (en) | Stereo control circuit | |
| JP3070049B2 (en) | Phase detector | |
| JPS60114455U (en) | Pulse noise removal device for FM receiver | |
| JPS6454442U (en) | ||
| JPS6378278U (en) | ||
| JPS633236Y2 (en) | ||
| JPS5838656Y2 (en) | Tuning display device | |
| JPS6440070U (en) | ||
| JPS6244536U (en) | ||
| JPH0277925U (en) | ||
| JPS63102339U (en) | ||
| JPS6275636U (en) | ||
| JPH0216632U (en) | ||
| JPS59149737U (en) | FM tuner with multipath noise removal device | |
| JPS6014528U (en) | tuning indicator device | |
| JPS5876249U (en) | fm radio receiver | |
| JPH01171139U (en) | ||
| JPS6214386U (en) | ||
| JPS60132044U (en) | wireless receiver | |
| JPS6219829U (en) | ||
| JPS6150351U (en) | ||
| JPH0332841U (en) |