JPS58566U - automatic frequency control device - Google Patents
automatic frequency control deviceInfo
- Publication number
- JPS58566U JPS58566U JP9376081U JP9376081U JPS58566U JP S58566 U JPS58566 U JP S58566U JP 9376081 U JP9376081 U JP 9376081U JP 9376081 U JP9376081 U JP 9376081U JP S58566 U JPS58566 U JP S58566U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- intermediate frequency
- frequency
- oscillation
- 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
Landscapes
- Television Receiver Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のＡＦＳ装置のブロック図、第２図は従来
のＡＦＳ特性図、第３図は本考案による一実施例を示す
ブロック図、第４図は本考案にょ □るＡＦＳ装
置の特性図である。
１・・・・・・高周波増幅回路、２・・・・・・混合回
路、３・・・・・・局部周波数発振回路、４・・・・・
・中間周波増幅回路、５・・・・・・ＡＦＳ検波回路、
６−・・・・・・ＡＦＳ増幅回路。Fig. 1 is a block diagram of a conventional AFS device, Fig. 2 is a conventional AFS characteristic diagram, Fig. 3 is a block diagram showing an embodiment of the present invention, and Fig. 4 is a characteristic of the AFS device according to the present invention. It is a diagram. 1...High frequency amplifier circuit, 2...Mixing circuit, 3...Local frequency oscillation circuit, 4...
・Intermediate frequency amplification circuit, 5...AFS detection circuit,
6-...AFS amplifier circuit.
Claims (1)
路の出力が印加される中間周波増幅回路と、上記中間周
波増幅回路の□映像中間周波信号出力を検波し８字波形
を出すＳ字波形検波回路と、上記検波回路の出力を増幅
するＳ字波形増幅回路と、上記中間周波増幅回路の出力
のうち音声周波数信号のみに同調する音声周波同調回路
と、上記Ｓ字波形増幅回路の出力値の上限電位とアース
電位との間を掃引させる発振回路と、上記音声中間周波
同調回路の出力により、上記Ｓ字波形増幅回路の出力と
上記発振回路の出力のいずれかを出力する切換回路と、
上記切換回路の出力が印加され発振周波数が自動的に変
化し出力を上記混合回路と印加する局部周波数発振回路
から成り、隣接信号による誤動作及び引込範囲の減少を
防止する手段を備えた事を特徴とする自動周波数制御装
置。A mixing circuit to which the received high frequency signal is applied, an intermediate frequency amplification circuit to which the output of the mixing circuit is applied, and an S-shaped waveform that detects the video intermediate frequency signal output of the intermediate frequency amplification circuit and generates an 8-shaped waveform. a detection circuit, an S-shaped waveform amplification circuit that amplifies the output of the detection circuit, an audio frequency tuning circuit that tunes only the audio frequency signal among the outputs of the intermediate frequency amplification circuit, and an output value of the S-waveform amplification circuit. an oscillation circuit that sweeps between the upper limit potential of the oscillator and the ground potential, and a switching circuit that outputs either the output of the S-shaped waveform amplification circuit or the output of the oscillation circuit according to the output of the audio intermediate frequency tuning circuit;
It is characterized by comprising a local frequency oscillation circuit to which the output of the switching circuit is applied, the oscillation frequency is automatically changed, and the output is applied to the mixing circuit, and is equipped with means for preventing malfunctions and reduction of the pull-in range due to adjacent signals. automatic frequency control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9376081U JPS58566U (en) | 1981-06-26 | 1981-06-26 | automatic frequency control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9376081U JPS58566U (en) | 1981-06-26 | 1981-06-26 | automatic frequency control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58566U true JPS58566U (en) | 1983-01-05 |
Family
ID=29888728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9376081U Pending JPS58566U (en) | 1981-06-26 | 1981-06-26 | automatic frequency control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179703U (en) * | 1983-05-19 | 1984-12-01 | 住友ゴム工業株式会社 | tire flap |
-
1981
- 1981-06-26 JP JP9376081U patent/JPS58566U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179703U (en) * | 1983-05-19 | 1984-12-01 | 住友ゴム工業株式会社 | tire flap |
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