JPH02100341U - - Google Patents
Info
- Publication number
- JPH02100341U JPH02100341U JP861589U JP861589U JPH02100341U JP H02100341 U JPH02100341 U JP H02100341U JP 861589 U JP861589 U JP 861589U JP 861589 U JP861589 U JP 861589U JP H02100341 U JPH02100341 U JP H02100341U
- Authority
- JP
- Japan
- Prior art keywords
- afc
- reception frequency
- circuit
- volume
- changing
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Description
第１図はこの考案の一実施例を示す回路構成図
、第２図はこの考案の他の実施例を示す回路構成
図、第３図は従来の回路構成図、第４図は第３図
のＩＦアンプの出力直流電圧の特性図である。
３……同調回路、４……ＡＦＣ回路、ＶＲ１…
…ボリウム、５……電圧可変インピーダンス回路
。
Figure 1 is a circuit diagram showing one embodiment of this invention, Figure 2 is a circuit diagram showing another embodiment of this invention, Figure 3 is a conventional circuit diagram, and Figure 4 is Figure 3. FIG. 3 is a characteristic diagram of the output DC voltage of the IF amplifier. 3... Tuning circuit, 4... AFC circuit, VR1...
...Volume, 5...Voltage variable impedance circuit.
Claims (1)
量を変化させて受信周波数を変更する電子同調式
のラジオ受信機において、受信周波数のＡＦＣの
幅を決定するＩＦ回路の直流出力電圧をＡＦＣ電
圧として前記可変容量ダイオードに供給するＡＦ
Ｃ手段と、前記ボリウムに連動し、受信周波数の
値に応じて前記ＡＦＣ電圧値を可変する可変手段
とからなるＡＦＣ回路。 In an electronically tuned radio receiver that changes the reception frequency by changing the capacitance of a variable capacitance diode by changing the volume, the DC output voltage of the IF circuit that determines the AFC width of the reception frequency is used as the AFC voltage to control the variable capacitance diode. AF supplied to
An AFC circuit comprising: C means; and variable means that is linked to the volume and varies the AFC voltage value according to the value of the reception frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP861589U JPH02100341U (en) | 1989-01-27 | 1989-01-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP861589U JPH02100341U (en) | 1989-01-27 | 1989-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02100341U true JPH02100341U (en) | 1990-08-09 |
Family
ID=31214652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP861589U Pending JPH02100341U (en) | 1989-01-27 | 1989-01-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02100341U (en) |
-
1989
- 1989-01-27 JP JP861589U patent/JPH02100341U/ja active Pending