JPH0332841U - - Google Patents
Info
- Publication number
- JPH0332841U JPH0332841U JP9210489U JP9210489U JPH0332841U JP H0332841 U JPH0332841 U JP H0332841U JP 9210489 U JP9210489 U JP 9210489U JP 9210489 U JP9210489 U JP 9210489U JP H0332841 U JPH0332841 U JP H0332841U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- intermediate frequency
- carrier wave
- 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.)
- Granted
Links
- 230000008034 disappearance Effects 0.000 claims 2
- 230000005236 sound signal Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Circuits Of Receivers In General (AREA)
Description
第１図は本考案の原理図、第２図はＦＭ検波特
性図、第３図は本考案の第１実施例の構成図、第
４図は本考案の第２実施例の構成図である。
図中、１０……ＡＭ受信機、２０……出力信号
制御回路、２１……中間周波増幅器、２２……角
度復調器、２３……レベル検波器、２４……コン
パレータ、２５……出力禁止回路である。
Fig. 1 is a diagram of the principle of the present invention, Fig. 2 is an FM detection characteristic diagram, Fig. 3 is a block diagram of the first embodiment of the present invention, and Fig. 4 is a block diagram of the second embodiment of the present invention. . In the figure, 10...AM receiver, 20...Output signal control circuit, 21...Intermediate frequency amplifier, 22...Angle demodulator, 23...Level detector, 24...Comparator, 25...Output prohibition circuit It is.
Claims (1)
号に変換し、該中間周波数をＡＭ復調してオーデ
イオ信号を再生するＡＭ受信機の出力信号制御回
路において、 該中間周波信号を増幅する中間周波増幅器２１
と、 該中間周波増幅器の出力を角度復調する角度復
調器２２と、 該角度復調器の出力レベルを検出するレベル検
波器２３と、 該レベル検波器の出力が一定値以上になつたと
き搬送波消失信号を出力するコンパレータ２４と
、 該搬送波消失信号が生じている期間だけ前記オ
ーデイオ信号の出力を禁止する回路２５とを備え
てなることを特徴とするＡＭ受信機の出力信号制
御回路。[Claims for Utility Model Registration] In an output signal control circuit of an AM receiver that receives an AM modulated carrier wave, converts it into an intermediate frequency signal, and demodulates the intermediate frequency to reproduce an audio signal, Intermediate frequency amplifier 21 that amplifies the signal
, an angle demodulator 22 that angle-demodulates the output of the intermediate frequency amplifier, a level detector 23 that detects the output level of the angle demodulator, and carrier wave disappearance when the output of the level detector exceeds a certain value. An output signal control circuit for an AM receiver, comprising a comparator 24 that outputs a signal, and a circuit 25 that prohibits output of the audio signal only during a period when the carrier wave disappearance signal is generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9210489U JPH0724823Y2 (en) | 1989-08-04 | 1989-08-04 | Output signal control circuit of AM receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9210489U JPH0724823Y2 (en) | 1989-08-04 | 1989-08-04 | Output signal control circuit of AM receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0332841U true JPH0332841U (en) | 1991-03-29 |
| JPH0724823Y2 JPH0724823Y2 (en) | 1995-06-05 |
Family
ID=31641550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9210489U Expired - Fee Related JPH0724823Y2 (en) | 1989-08-04 | 1989-08-04 | Output signal control circuit of AM receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0724823Y2 (en) |
-
1989
- 1989-08-04 JP JP9210489U patent/JPH0724823Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0724823Y2 (en) | 1995-06-05 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |