JPS645538U - - Google Patents
Info
- Publication number
- JPS645538U JPS645538U JP9984687U JP9984687U JPS645538U JP S645538 U JPS645538 U JP S645538U JP 9984687 U JP9984687 U JP 9984687U JP 9984687 U JP9984687 U JP 9984687U JP S645538 U JPS645538 U JP S645538U
- Authority
- JP
- Japan
- Prior art keywords
- band
- terminal
- tuning
- coil
- capacitor connected
- 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
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Noise Elimination (AREA)
Description
第１図は本考案回路の一実施例の回路図、第２
図は従来回路の一例の回路図、第３図は従来回路
のＬＷ受信時の等価回路図である。
Ｃ１〜Ｃ４，ＣＡ，ＣＢ，ＣＴ…コンデンサ、
Ｌ１，Ｌ３…同調コイル、Ｑ１〜Ｑ４…トランジ
スタ、Ｒ１〜Ｒ３，ＲＤ…抵抗。
Figure 1 is a circuit diagram of an embodiment of the circuit of the present invention, Figure 2 is a circuit diagram of an embodiment of the circuit of the present invention;
The figure is a circuit diagram of an example of a conventional circuit, and FIG. 3 is an equivalent circuit diagram of the conventional circuit when receiving LW. C1 to C4 , CA, CB, CT...capacitor,
L1 , L3 ...tuning coil, Q1 - Q4 ...transistor, R1 - R3 , RD...resistance.
Claims (1)
との間に直列接続された第１の帯域用の第１の同
調コイル及び第２の帯域用の第２の同調コイルと
、 該入力端子と共通端子との間を接続する第１の
コンデンサと、 第１の帯域受信時にのみ該第１及び第２の同調
コイルの接続点と共通端子との間を接続する第２
のコンデンサと、 第２の帯域受信時にのみ該出力端子と共通端子
との間を接続する第３のコンデンサとよりなるチ
ユーナの同調回路において、 第１の帯域受信時にのみ該第２の同調コイルの
両端間に接続する第４のコンデンサを設けてなる
チユーナの同調回路。[Claims for Utility Model Registration] A first tuning coil for a first band and a second tuning coil for a second band connected in series between an input terminal for a received signal and an output terminal for a tuned signal. a first capacitor connected between the coil, the input terminal and the common terminal, and a first capacitor connected between the connection point of the first and second tuning coils and the common terminal only when receiving the first band. 2
and a third capacitor that connects the output terminal and the common terminal only when receiving the second band. A tuner tuning circuit including a fourth capacitor connected between both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9984687U JPH046274Y2 (en) | 1987-06-29 | 1987-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9984687U JPH046274Y2 (en) | 1987-06-29 | 1987-06-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS645538U true JPS645538U (en) | 1989-01-12 |
| JPH046274Y2 JPH046274Y2 (en) | 1992-02-20 |
Family
ID=31327384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9984687U Expired JPH046274Y2 (en) | 1987-06-29 | 1987-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH046274Y2 (en) |
-
1987
- 1987-06-29 JP JP9984687U patent/JPH046274Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH046274Y2 (en) | 1992-02-20 |