JPH0415329U - - Google Patents
Info
- Publication number
- JPH0415329U JPH0415329U JP1990054415U JP5441590U JPH0415329U JP H0415329 U JPH0415329 U JP H0415329U JP 1990054415 U JP1990054415 U JP 1990054415U JP 5441590 U JP5441590 U JP 5441590U JP H0415329 U JPH0415329 U JP H0415329U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- variable capacitance
- capacitance diode
- tuning
- signal
- 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
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図は本考案の具体的な回路構成例を示す図
、第２図は従来の回路構成例を示す図である。
ＴＣ１……１次側同調回路、ＴＣ２……２次側
同調回路、Ｄ１，Ｄ２……同調用可変容量ダイオ
ード、Ｒ１，Ｒ２，Ｒ７……同調用バイアス抵抗
、Ｄ３……結合用可変容量ダイオード。
FIG. 1 is a diagram showing a specific example of the circuit configuration of the present invention, and FIG. 2 is a diagram showing an example of the conventional circuit configuration. TC1...Primary side tuning circuit, TC2...Secondary side tuning circuit, D1, D2...Tuning variable capacitance diode, R1, R2, R7...Tuning bias resistor, D3...Coupling variable capacitance diode.
Claims (1)
チヤンネルの信号を選択した後、低入力インピー
ダンスの混合回路に入力して中間周波信号に変換
するチユーナ回路において、前記同調回路と混合
回路間に結合用の可変容量ダイオードを設け、そ
の可変容量タイオードのカソード側に同調電圧を
印加するバイアス抵抗を設けたことを特徴とする
チユーナ回路。 For coupling between the tuned circuit and the mixing circuit in a tuner circuit that selects a signal of a predetermined channel from among the received high frequency signals in a tuning circuit and then inputs it to a mixing circuit with low input impedance and converts it into an intermediate frequency signal. A tuner circuit comprising a variable capacitance diode and a bias resistor for applying a tuning voltage to the cathode side of the variable capacitance diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990054415U JPH0415329U (en) | 1990-05-24 | 1990-05-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990054415U JPH0415329U (en) | 1990-05-24 | 1990-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0415329U true JPH0415329U (en) | 1992-02-07 |
Family
ID=31576463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990054415U Pending JPH0415329U (en) | 1990-05-24 | 1990-05-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0415329U (en) |
-
1990
- 1990-05-24 JP JP1990054415U patent/JPH0415329U/ja active Pending