JPS6356825U - - Google Patents
Info
- Publication number
- JPS6356825U JPS6356825U JP15037286U JP15037286U JPS6356825U JP S6356825 U JPS6356825 U JP S6356825U JP 15037286 U JP15037286 U JP 15037286U JP 15037286 U JP15037286 U JP 15037286U JP S6356825 U JPS6356825 U JP S6356825U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- local oscillator
- tuning circuit
- intermediate frequency
- variable capacitance
- 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
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来の回路図である。
ＯＳＣ……局部発振器、Ｌ……コイル、Ｃ１〜
Ｃ３……コンデンサ、Ｒ１〜Ｒ３……抵抗、Ｄ…
…可変容量ダイオード、ＶＴＵＮ……入力端子、
ＶＡＦＣ……供給端子。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a conventional circuit diagram. OSC...Local oscillator, L...Coil, C1 ~
C3 ...Capacitor, R1 to R3 ...Resistance, D...
...variable capacitance diode, VTUN...input terminal,
VAFC...Supply terminal.
Claims (1)
振器の発振周波数を決定する同調回路と、この同
調回路の同調周波数を可変する可変容量素子と、
前記局部発振器により生成された中間周波数を検
波して出力の中心周波数からはずれたとき、その
中心周波数のずれを前記可変容量素子に印加して
補正するＡＦＣ回路とからなる電子同調回路。 A local oscillator that generates an intermediate frequency, a tuning circuit that determines the oscillation frequency of this local oscillator, and a variable capacitance element that varies the tuning frequency of this tuning circuit.
An electronic tuning circuit comprising an AFC circuit that detects the intermediate frequency generated by the local oscillator and corrects the deviation of the center frequency by applying it to the variable capacitance element when the intermediate frequency deviates from the center frequency of the output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15037286U JPS6356825U (en) | 1986-09-30 | 1986-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15037286U JPS6356825U (en) | 1986-09-30 | 1986-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6356825U true JPS6356825U (en) | 1988-04-15 |
Family
ID=31066455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15037286U Pending JPS6356825U (en) | 1986-09-30 | 1986-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6356825U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429682U (en) * | 1977-07-29 | 1979-02-27 |
-
1986
- 1986-09-30 JP JP15037286U patent/JPS6356825U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429682U (en) * | 1977-07-29 | 1979-02-27 |
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