JPS62201530U - - Google Patents
Info
- Publication number
- JPS62201530U JPS62201530U JP9018786U JP9018786U JPS62201530U JP S62201530 U JPS62201530 U JP S62201530U JP 9018786 U JP9018786 U JP 9018786U JP 9018786 U JP9018786 U JP 9018786U JP S62201530 U JPS62201530 U JP S62201530U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- afc
- changes
- circuit
- output
- 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
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図は本考案の一実施例を示す要部の回路図
、第２図はＦＭ受信回路図、第３図乃至第５図は
ＡＦＣ制御出力線図、第６図は変形例を示す回路
図、第７図は選局回路を有する要部回路図、第８
図は従来技術を示す回路図、第９図はそのＡＦＣ
制御出力線図である。
１４……第２混合回路、１５……第２局部発振
回路、１６……中間周波増幅回路、２４……ＡＦ
Ｃ電圧増幅アンプ、２８，２９……トランジスタ
（スイツチ素子）。
Fig. 1 is a circuit diagram of the main part showing one embodiment of the present invention, Fig. 2 is an FM reception circuit diagram, Figs. 3 to 5 are AFC control output diagrams, and Fig. 6 is a circuit showing a modified example. Figure 7 is a circuit diagram of the main part including the channel selection circuit, Figure 8
The figure is a circuit diagram showing the conventional technology, and Figure 9 is its AFC.
It is a control output diagram. 14... Second mixing circuit, 15... Second local oscillation circuit, 16... Intermediate frequency amplification circuit, 24... AF
C voltage amplification amplifier, 28, 29...transistor (switch element).
Claims (1)
合回路に局部発振回路を接続させ、ＡＦＣ電圧変
化に基づいて発振回路の周波数を変化させる装置
において、ＡＦＣ電圧増幅アンプの出力側にこの
出力値が設定範囲以上又は以下に変化したときに
この出力を初期設定電圧に維持するスイツチ素子
を設けたことを特徴とするＦＭ受信機のＡＦＣ帯
域制限装置。 In a device that connects a local oscillation circuit to an FM tuning mixing circuit provided in the front stage of an intermediate frequency amplification circuit and changes the frequency of the oscillation circuit based on changes in AFC voltage, this output value is set on the output side of the AFC voltage amplification amplifier. An AFC band limiting device for an FM receiver, comprising a switch element that maintains the output at an initial setting voltage when the voltage changes above or below the range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9018786U JPS62201530U (en) | 1986-06-12 | 1986-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9018786U JPS62201530U (en) | 1986-06-12 | 1986-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62201530U true JPS62201530U (en) | 1987-12-22 |
Family
ID=30949827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9018786U Pending JPS62201530U (en) | 1986-06-12 | 1986-06-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62201530U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934719A (en) * | 1982-08-20 | 1984-02-25 | Matsushita Electric Ind Co Ltd | Automatic frequency controller |
-
1986
- 1986-06-12 JP JP9018786U patent/JPS62201530U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934719A (en) * | 1982-08-20 | 1984-02-25 | Matsushita Electric Ind Co Ltd | Automatic frequency controller |